Daily Life Tools (13)

Everyday calculators and converters for the whole world - health, money, kitchen, time, and random picks. All offline.

BMR & TDEE Calorie Calculator — Calculate your daily calorie needs with the Mifflin-St Jeor equation - BMR, TDEE, and lose/maintain/gain targets.
Pregnancy Due Date Calculator — Estimate your due date and current gestational age from the first day of your last period (Naegele's rule).
Sleep Cycle Calculator — Find the best bedtime or wake time based on 90-minute sleep cycles so you wake up refreshed.
Currency Converter (Live) — Convert 150+ currencies with free live daily rates (two key-less sources, 12h browser cache, offline fallback) plus a manual bank-rate override.
Fuel Cost & Mileage Calculator — Work out the fuel cost of any trip from distance, efficiency (L/100km or MPG), and price - split across passengers.
Kitchen Converter (Oven & Cups) — Convert oven temperatures (C/F/Gas mark) and cups-to-grams for common baking ingredients.
Work Hours & Pay Calculator — Track daily start/end times and breaks across a week - total hours and weekly pay at your hourly rate.
Business Days Calculator — Count working days between two dates with weekend and holiday exclusions.
Coin Flip & Dice Roller — Cryptographically random coin flips and multi-dice rolls (d4-d100) for games and decisions.
Shoe Size Converter — Convert shoe sizes between US, UK, EU, and foot length in centimeters for men, women, and kids.
Water Intake Calculator — Estimate your suggested daily water intake from weight, exercise, and climate.
Roman Numeral Converter — Convert numbers to Roman numerals and back, both directions, 1-3999.
Timezone Converter — Convert date and time between any two IANA timezones with DST-aware offsets, a live now mode, and multi-zone batch rows.

AI & LLM Tools (10)

AI-era utilities: token and cost estimators, prompt tooling, secret scanners, and schema generators - all fully in-browser.

Prompt Token & Cost Estimator — Count tokens for any prompt and estimate the API cost per call with September 2026 models — GPT-5.6, Claude 5, Gemini 3.8, DeepSeek V4.
AI Cost Calculator & Price Board — Estimate your monthly LLM bill from tokens and call volume, with a side-by-side comparative ROI matrix for major models.
.env & Code Secret Scanner — Paste a .env file or code snippet and find leaked API keys, tokens, and passwords - masked previews, remediation advice, zero network calls.
API Key Format Validator — Identify the provider and validate the format of any API key entirely offline - OpenAI, Anthropic, AWS, GitHub, Stripe and more.
Prompt Template Renderer — Fill {{variables}} in any prompt template, preview the final prompt, and see its token count before sending.
System Prompt / AGENTS.md Builder — Compose a production system prompt from guided blocks - role, mission, rules, output format, verification - and export AGENTS.md-style files.
JSON Schema Generator (Strict) — Turn sample JSON into an LLM strict-mode JSON Schema - every field required, additionalProperties locked.
cURL → fetch / SDK Converter — Convert cURL commands into fetch code and typed OpenAI/Anthropic SDK calls - entirely in your browser.
Prompt Diff & Comparer — Compare two prompt versions line by line with a token and cost delta - see exactly what changed.
Webhook Signature Verifier — Verify Stripe-style HMAC-SHA256 webhook signatures locally with Web Crypto and inspect payloads safely.

Text Tools (42)

Analyze, format, clean, and convert text formats instantly.

Screenshot & Image Text Extractor (OCR) — Detect text in screenshots on-device via the browser's Shape Detection API (Chromium). Editable output, copy-ready — no upload, no cloud OCR.
Word Counter — Count words, characters, sentences, paragraphs, and reading time instantly as you type.
Case Converter — Convert text between UPPERCASE, lowercase, Title Case, camelCase, kebab-case, and more.
Morse Code Translator — Translate text to international Morse code and decode Morse back to plain text.
Markdown Preview — Write Markdown with live side-by-side HTML preview. Supports GFM tables, code blocks, and more.
Lorem Ipsum Generator — Generate placeholder text by paragraphs, sentences, or words. Instant copy-ready output.
QR Code Generator — Generate QR codes from any text, URL, or data. Download as SVG — no server required.
Fancy Text Generator — Convert plain text into 17+ styled Unicode fonts - bold, script, fraktur, bubble, fullwidth - ready to paste into bios, chats, and posts.
ASCII Banner Art — Turn text into classic block-letter ASCII banners for READMEs, terminal headers, and code comments.
Emoji Picker & Search — Search 100+ emojis by name, click to copy instantly, and revisit your recently used ones.
Markdown Table Generator — Build Markdown tables visually with column alignment control and copy-ready GFM output.
Speech to Text — Dictate with the Web Speech API in 8 languages, watch the live transcript build, then edit, copy, or download it.
Uppercase Converter — Instantly convert any text to ALL CAPS — great for headlines, constants, or emphasis.
Lowercase Converter — Convert text to all lowercase instantly — useful for normalizing data or styling.
Title Case Converter — Capitalize the first letter of every major word following standard title-case rules.
Sentence Case Converter — Capitalize the first letter of each sentence. Correct irregular capitalization instantly.
Whitespace Trimmer — Remove leading, trailing, and duplicate internal spaces from any text block.
Remove All Spaces — Strip every whitespace character from text — useful for formatting codes and identifiers.
Reverse Text Generator — Reverse any text character-by-character. Great for fun, watermarks, or encoding tests.
Markdown → HTML Converter — Convert Markdown to clean HTML. Preview rendered output and copy the raw HTML.
Character Counter & Analyzer — Detailed text analytics: character count, words, sentences, paragraphs, and reading time.
Text Diff & Merge — Compare two text blocks line-by-line with color-coded additions, deletions, and modifications.
Text ↔ Binary Converter — Convert text to 8-bit binary and back — full UTF-8 support including emoji, with separator options.
Caesar Cipher / ROT13 — Shift letters by any amount (ROT13 preset included) — encode and decode Caesar ciphers instantly.
Text Repeater — Repeat any text up to 1,000 times with your choice of separator — for testing, fills, and placeholders.
Duplicate Line Remover — Remove duplicate lines with trim and case options, then sort A–Z or keep original order.
Unicode Character Inspector — Inspect every character: code point, HTML entity, UTF-8 byte size, and script block hints.
HTML Entity Encoder & Decoder — Encode special characters to named or numeric HTML entities and decode encoded HTML entities back to raw text.
Multi-Base Text ↔ Hex ↔ Binary Converter — Live bi-directional conversion between plain text and hexadecimal, binary, decimal ASCII codes, octal, and Base64 — encode or decode with optional byte separators.
String Obfuscator / Deobfuscator — Apply ROT13, ROT47, reverse, Base64 wrap, and Unicode homoglyph transformations to obfuscate or reveal text strings.
Text Statistics & Readability — Analyze text with Flesch Reading Ease, Flesch-Kincaid Grade, Gunning Fog, SMOG, Coleman-Liau, and ARI indices plus syllable, sentence, and paragraph counts.
List Converter & Sorter — Sort, deduplicate, prefix/suffix, number, reverse, shuffle, and change delimiters on multi-line lists — one-click transformations.
Numeronym Generator — Convert words to numeronyms (internationalization → i18n, accessibility → a11y) and decode them back.
NATO Phonetic Alphabet Converter — Convert text to the NATO phonetic alphabet (Alpha, Bravo, Charlie...) for clear verbal communication of characters.
Text ↔ Unicode Codepoints — Show Unicode codepoints (U+XXXX), UTF-8/UTF-16 byte sequences, and character names for every character in the input.
Email Address Normalizer — Canonicalize email addresses — strip Gmail dots and plus-addressing, lowercase domains, and detect alias duplicates.
Phone Number Parser & Formatter — Parse and format international phone numbers with country detection, E.164, national, and RFC 3966 tel: URI output formats.
ROT13 / ROT47 Encoder — Apply ROT13 (letters only) and ROT47 (all printable ASCII) rotation ciphers — instant encode and decode in one click.
BBCode to HTML Converter — Convert BBCode - bold, italics, links, images, lists, quotes, size, color - into clean HTML with live preview and source output, safely escaped.
HTML to Markdown Converter — Convert HTML into clean GitHub-flavored Markdown - headings, links, images, lists, code blocks, and tables - with Markdown-significant characters safely escaped.
Find & Replace Text — Find and replace across any text with match case, whole word and full regex with $1 and named-group replacements - see the replacement count live.
Word Frequency Counter — Count how often every word appears in a text, with stop-word filtering, minimum length and a CSV export for keyword and writing analysis.

Developer Tools (110)

Format, validate, parse, and hash code structures in-browser.

ADB Command & Dev Options Studio — Toggle Android developer options visually: Layout Bounds, GPU Overdraw, Stay Awake, StrictMode, and Pointer Location with one-click ADB shell scripts.
WebAssembly IDE — Run Python, JS, and more natively in the browser via WASM. No installs — execute code instantly.
Base64 Encoder/Decoder — Encode text to Base64 or decode Base64 strings — full UTF-8 support, entirely in your browser.
JSON Formatter — Beautify, minify, and validate JSON instantly. Surfaces the parser's own syntax errors as you type.
JWT Decoder — Decode JWT headers and payloads locally — claims pretty-printed, expiry checked. Signature verification stays on your backend.
Unix Timestamp Converter — Convert Unix epoch timestamps to readable dates and back. Supports ms and seconds.
UUID Generator — Generate cryptographically random version 4 UUIDs in bulk. Copy each with one click.
URL Encoder/Decoder — Encode special characters for safe URL usage, or decode percent-encoded strings.
Token Counter — Estimate tokens for current OpenAI, Claude, Gemini, Llama, and Mistral models. Exact BPE is labeled where available.
Regex Tester — Test regular expressions with a plain-language token breakdown, group-level match tables, all seven flags, and a ReDoS-safe background matcher.
Cron Translator — Translate cron expressions to plain English, validate fields, and preview the next 5 run times.
XML Formatter & Validator — Beautify, minify, and validate XML documents. Highlights malformed tags and syntax errors.
HTML Formatter & Beautifier — Format messy or minified HTML with proper indentation. Copy production-ready markup instantly.
JSONPath Evaluator — Run JSONPath expressions against JSON data. Visualize matching nodes and arrays instantly.
cURL → Fetch Converter — Convert cURL commands to JavaScript Fetch, Axios, or Python requests code automatically.
Chmod Calculator — Build Linux file permissions visually with owner/group/public checkboxes and special bits. Get octal and symbolic notation.
JSON Tree Viewer — Explore JSON as a collapsible tree with typed values, array/object counts, and one-click JSONPath-style copy.
DNS Lookup (DoH) — Query A, AAAA, MX, TXT, NS, and CNAME records through Cloudflare's encrypted DNS-over-HTTPS resolver.
My IP & Network Details — See the IPv4/IPv6 addresses, ISP, country, and timezone that websites observe when you visit them.
Fake Data Generator — Generate realistic test users - names, emails, phones, addresses - as JSON, CSV, or SQL INSERT statements for demos and test databases.
Keycode Inspector — Press any key to see its keyCode, key name, code, and event properties live in the browser.
robots.txt Generator — Build robots.txt files visually. Control Googlebot, Bingbot, and crawl delays with a UI.
Sitemap XML Generator — Create XML sitemaps from a list of URLs with priority, change frequency, and last-modified dates.
SQL Formatter — Format and indent SQL queries with proper indentation and keyword casing. Dialect-neutral.
Data Format Converter — Convert data between JSON, CSV, and YAML formats with pretty-print and download options.
URL Slug Generator — Convert titles or phrases to clean, hyphenated, URL-safe slugs for SEO and routing.
URL Decoder — Decode percent-encoded URL strings back to readable text. Handles all RFC 3986 escapes.
Diff Checker — Compare text or code side by side or unified, with ignore rules, word-level highlights, a change summary, and a git-apply-ready patch export.
Mermaid Diagram Editor — Live editor for architecture and flowchart diagrams using Mermaid.js. Export as SVG instantly.
Base64 & URL Encoder/Decoder — Instant bidirectional Base64 and URL encoding/decoding. Supports full UTF-8 including emoji.
Number Base Converter — Convert integers between binary, octal, decimal, and hexadecimal in real time.
HTTP Status Code Reference — Searchable reference for every HTTP status code — 1xx to 5xx — with descriptions and use cases.
YAML Validator & Formatter — Validate YAML syntax, auto-format indentation, and convert YAML to JSON instantly.
CSV Table Editor — Paste CSV and edit it as a spreadsheet table. Add/remove rows and columns, then export.
JSON to CSV Converter — Flatten JSON arrays to CSV with auto-detected headers. Handles nested objects.
Visual Cron Builder — Build cron schedules interactively with dropdowns for minute, hour, day, month, and weekday.
ASCII & Unicode Table — Browse and search the full ASCII and Unicode reference. Copy characters by name or code point.
ENV File Validator — Validate .env files for missing keys, duplicate entries, and empty values. Compare local vs example.
Changelog Generator — Generate Keep a Changelog entries from commit messages. Supports semantic versioning format.
README Generator — Scaffold professional README.md files with badges, sections, and table of contents from a form.
Open Graph Preview — Preview how your URL will appear when shared on Twitter, LinkedIn, and Slack. Edit OG tags live.
IP Subnet Calculator — Calculate network address, broadcast, host range, and CIDR notation for IPv4 subnets.
TOML Validator & Formatter — Validate TOML syntax and format with proper indentation. Convert between TOML and JSON.
JSON to TypeScript — Generate typed TypeScript interfaces from any JSON — nested objects, arrays, and unions handled automatically.
Code Minifier (CSS/JS/HTML) — Minify CSS, JavaScript, or HTML in your browser — strips comments and collapses whitespace safely, showing the size saved.
Query String Parser & Builder — Split any URL into base, path, hash, and decoded query parameters — see the JSON form of every parameter.
User-Agent Parser — Decode browser, engine, OS, and device class from any User-Agent string — useful for support tickets and analytics.
URL Extractor — Pull every URL out of any text — logs, markdown, emails — or list unique hosts only.
CSV to JSON Converter — Convert CSV to clean JSON with an RFC 4180 parser — quoted fields, embedded commas, and type casting handled.
JSON Escape / Unescape — Escape raw text into a JSON string literal, or unescape one back — newlines, quotes, and unicode handled.
YAML ⇄ JSON Converter — Convert simple YAML configs to JSON and back — nested maps, inline arrays, booleans, and numbers preserved.
What Is My Screen Size — Live viewport, screen resolution, DPR, Tailwind breakpoint, timezone, and hardware info for debugging.
JSON to TypeScript & Zod Studio — Paste arbitrary JSON and generate strongly typed TypeScript interfaces, types, and Zod validator schemas.
SVG to React / Vue / JSX Converter — Convert raw SVG markup into production-ready React (JSX/TSX), Vue 3, or Svelte component with customizable props.
OpenGraph & Social Card Simulator — Live real-time preview of page metadata on Google, Twitter/X, Facebook, and Discord with copy-paste meta tags.
SQL Schema to TypeScript & Prisma — Convert SQL CREATE TABLE DDL schemas into TypeScript interfaces, Prisma models, and Knex migrations.
IP Subnet & CIDR Mask Calculator — Calculate network address, broadcast, usable host range, CIDR mask, and total IP capacity for any IPv4 block.
Docker Compose Stack Builder — Visually configure multi-service containers (Node, Postgres, Redis, Mongo, Nginx) and export docker-compose.yml.
cURL to Python / Go / Rust / Fetch Code — Convert cURL commands into JavaScript fetch/axios, Python requests, Go net/http, and Rust reqwest code.
Docker Run ↔ Docker Compose Converter — Convert docker run CLI commands to docker-compose.yml files and vice versa with environment, volume, port, and network parsing.
Git Command Studio & Cheatsheet — Interactive command builder and troubleshooter for undoing commits, interactive rebasing, stashing, and branch workflows.
ULID Generator — Generate Universally Unique Lexicographically Sortable Identifiers — timestamp-prefixed, Crockford Base32, monotonically sortable.
NanoID Generator — Generate compact, URL-safe, cryptographically strong unique IDs with configurable alphabet and length (default 21 chars).
IBAN Validator & Parser — Validate International Bank Account Numbers with checksum verification, country detection, and BBAN structure breakdown.
JSON ↔ XML Converter — Convert JSON objects to well-formed XML and parse XML documents back to JSON with configurable root element and indentation.
JSON ↔ TOML Converter — Bi-directional conversion between JSON and TOML formats with proper type mapping for dates, arrays, and nested tables.
YAML ↔ TOML Converter — Convert between YAML and TOML configuration formats while preserving comments, types, and nested structure.
XML → JSON Converter — Parse XML documents into clean JSON trees with configurable attribute handling, text nodes, and array detection.
JSON Minify / Compact — Strip all whitespace from JSON to produce the smallest possible payload — shows byte savings and compression ratio.
JSON → Go Struct Generator — Generate idiomatic Go structs with proper json tags, type inference, nested struct extraction, and optional omitempty.
JSON → Java Class Generator — Generate Java POJOs or Records from JSON samples with proper types, getters/setters, and Jackson/Gson annotations.
JSON → Kotlin Data Class — Generate Kotlin data classes from JSON with nullable types, default values, and kotlinx.serialization annotations.
JSON → Python Dataclass — Generate Python @dataclass or TypedDict definitions from JSON samples with proper type hints and Optional fields.
JSON → Rust Struct (Serde) — Generate Rust structs with #[derive(Serialize, Deserialize)] and proper serde attributes from JSON samples.
JSON → GraphQL Type Definitions — Generate GraphQL type definitions from JSON objects with proper scalar mapping, nested types, and nullable fields.
HTML → JSX Converter — Convert raw HTML to valid JSX — transforms class→className, for→htmlFor, self-closing tags, inline styles, and event handlers.
HTML → Pug / Jade Converter — Convert HTML markup to Pug (Jade) template syntax with proper indentation, attribute formatting, and text content.
Math Expression Evaluator — Evaluate mathematical expressions with variables, functions (sin, cos, log, sqrt), constants (π, e), and unit conversions.
JavaScript Benchmark Runner — Compare JavaScript snippet execution speeds with ops/sec, relative performance, and statistical confidence intervals.
HTML WYSIWYG Editor — Rich text editor with formatting toolbar — outputs clean HTML. Bold, italic, lists, links, images, tables, and code blocks.
JSON Schema Validator — Validate JSON data against JSON Schema (Draft 4/6/7/2019-09/2020-12) with detailed error messages and path highlighting.
.htaccess Generator — Generate Apache .htaccess rules for redirects, rewrites, HTTPS enforcement, caching headers, Gzip compression, and security headers.
Nginx Config Generator — Generate Nginx server block configurations for reverse proxy, static files, SSL/TLS, rate limiting, and caching with best practices.
JSON Path Finder — Click any node in a JSON tree to get its JSONPath, jq filter, JavaScript accessor, and Python dict path — with copy buttons.
YAML → JSON Schema Generator — Generate JSON Schema from YAML sample data with automatic type inference, required fields, and nested object support.
GraphQL → TypeScript Types — Generate TypeScript interfaces and types from GraphQL schema definitions with proper nullable handling and enum support.
Fake REST API / Mock Data Generator — Generate realistic mock JSON API responses — users, products, posts, addresses, payments — with configurable schemas and counts.
Hex Dump / Hex Editor — View and edit file bytes as hexadecimal with ASCII sidebar, offset navigation, byte search, and binary diff highlighting.
Base32 Encode / Decode — RFC 4648 Base32 encoding and decoding with standard and hex alphabets, padding control, and binary input support.
Base58 Encode / Decode — Bitcoin-style Base58 and Base58Check encoding/decoding for addresses, transaction IDs, and binary-to-text conversions.
CRC Checksum Calculator — Calculate CRC-8, CRC-16, CRC-32, CRC-32C, and Adler-32 checksums for text and file inputs with hex and decimal output.
Gzip / Deflate Compress & Decompress — Compress and decompress data with Gzip and Deflate algorithms in-browser using the Compression Streams API — shows ratios.
Chart Maker (Line, Bar, Pie, Doughnut, Scatter) — Turn pasted label-value data into a line, bar, pie, doughnut, or scatter chart with a live preview, accessible data table, and PNG download.
Bitwise Calculator (AND, OR, XOR, Shifts) — Compute AND, OR, XOR, NAND, NOR, XNOR, NOT, and shift operations on 32-bit integers in decimal, hex, or binary - with all three representations shown.
XPath Tester & Evaluator — Run XPath expressions against any XML document in your browser - snapshot matches, serialized nodes, and precise error reporting for bad XML or bad expressions.
Code Beautifier (Prettier) — Format JavaScript, TypeScript, CSS, SCSS, LESS, HTML, Markdown, YAML, or JSON with real Prettier - opinionated, consistent output in your browser.
RSS / Atom / OPML Viewer — Paste or upload an RSS 2.0 feed, Atom feed, or OPML outline and read it as a clean list of titles, links, and dates - auto-detecting the format.
Prime Number Generator & Checker — Generate every prime in a range up to 10,000,000 with a sieve, and check any single number for primality - counts, first, and last prime included.
String Escape & Unescape Studio — Escape or unescape strings for JavaScript, JSON, HTML, XML, URLs, CSV, SQL, and regular expressions in one place - RFC-compliant quoting with round-trip checking.
SQL INSERT ⇄ CSV / JSON Converter — Turn SQL INSERT statements into CSV or JSON, and generate INSERTs from CSV or JSON - multi-row VALUES, quote escaping, and NULLs handled, nothing uploaded.
HTML Table Extractor (→ CSV / JSON / Markdown) — Paste HTML and pull every table out as clean CSV, JSON, or a Markdown table - header detection, captions, and multi-table picking included.
JSON Lines (NDJSON) ⇄ JSON / CSV Converter — Convert JSON Lines to a JSON array or CSV and back - nested records flattened to dot-path columns, malformed lines reported by line number, all in your browser.
IEEE 754 Float Converter (32 & 64-bit) — See how computers store numbers: convert between decimal, hex, binary, and the sign/exponent/mantissa bit fields of IEEE 754 floats and doubles, with subnormal, infinity, and NaN detection.
GraphQL Formatter & Validator — Format GraphQL queries, mutations, and SDL schemas with Prettier’s official GraphQL plugin in your browser - real parser errors with exact positions.
.env Converter (JSON, Properties, YAML, Shell) — Convert .env files to JSON, Java .properties, YAML, shell exports, or docker env lists - comments, quotes, and export prefixes parsed like real dotenv libraries, nothing uploaded.
Ascii85 / Base85 Encoder & Decoder — Encode binary or text as Ascii85 - the 25%-overhead encoding inside PDF, PostScript, and git binary patches - and decode it back byte-exact, with Adobe framing handled.
JSON Diff & Compare — Compare two JSON documents structurally and list every added, removed, changed and type-changed value by path, ignoring key order.
.env File Diff & Comparison — Compare two .env files key by key: see added, removed and changed variables with secret values masked by default, then download a plain-text report.
Docker Compose Validator — Lint a docker-compose.yml for missing images, invalid or clashing ports, broken depends_on, undefined volumes and networks, environment and restart mistakes, with line numbers.
Semver Calculator & Range Checker — Compare semantic versions, bump major/minor/patch, sort version lists and test npm ranges like ^1.2.0, ~1.4 and >=1 <2 with prerelease rules.

CSS Generators (37)

Visually build, customize, and copy responsive CSS stylings.

Box Shadow Generator — Build CSS box-shadow rules visually with sliders. Copy ready-to-use CSS with one click.
CSS Gradient Generator — Design linear and radial CSS gradients with a visual editor. Supports multiple color stops.
CSS Grid Builder — Visually design CSS Grid layouts with drag-free controls. Get production-ready CSS instantly.
Border Radius Generator — Control all four corners independently with sliders. Preview the shape live and copy the CSS.
CSS Animation Generator — Choose from bounce, fade, slide, and spin presets. Customize timing, iterations, and easing.
Flexbox Playground — Control justify-content, align-items, flex-wrap, gap, and direction visually. Copy production CSS.
Typography Scale Generator — Pick a base size and scale ratio to generate a harmonious type scale with CSS custom properties.
CSS Filter Generator — Stack blur, brightness, contrast, grayscale, hue-rotate, and saturate filters visually.
CSS Transition Builder — Choose property, duration, easing, and delay. Preview the transition live and copy the CSS.
Glassmorphism Generator — Tune backdrop-filter blur, background opacity, and border. Get copy-ready frosted-glass CSS instantly.
Neumorphism Generator — Create soft-UI neumorphic shadows with color, depth, blur, and concave/convex modes.
CSS Clip-Path Generator — Visually build polygon, circle, ellipse, and inset clip-path shapes. Copy the CSS instantly.
CSS Variables / Token Exporter — Define a design token palette (colors, spacing, radii, fonts) and export as CSS custom properties.
Aspect Ratio Calculator — Calculate and convert between aspect ratios for responsive images, video embeds, and layouts.
Gradient Text Generator — Create gradient headline text with background-clip: text — live preview and copy-ready CSS.
Gradient Border Generator — Build gradient or solid/dashed borders with radius control — modern border-box technique, CSS ready to paste.
CSS Table Generator — Generate styled table CSS in minimal, striped, bordered, or card styles with a live preview of your accent color.
CSS Loader & Spinner Generator — Generate ring, dots, bars, or pulse loading animations with custom size, color, and speed — HTML + CSS included.
CSS Button Generator — Design buttons visually — padding, radius, colors, shadow, hover lift — and copy production-ready CSS.
Mesh Gradient & Aura Studio — Design organic multi-orb blurred mesh gradients with live coordinate sliders, spreading diffusion, and CSS export.
CSS 3D Card & Spatial Tilt Generator — Interactive 3D perspective card builder with multi-axis rotation, glare highlights, and hardware-accelerated CSS.
CSS Triangle & Shape Maker — Generate pure CSS border triangles, chevrons, and speech indicators for all 8 cardinal directions.
CSS Pattern & Texture Generator — Create seamless polka dots, clean gridlines, diagonal stripes, blueprint canvas, and chevron textures in CSS.
Tailwind 11-Shade Palette Studio — Input any color and generate the full 50–950 Tailwind color scale with copyable tailwind.config.js snippet.
CSS Fluid Typography clamp() Calculator — Calculate responsive clamp(min, preferred_vw, max) typography and container padding across viewport breakpoints.
CSS Keyframe Animation Timeline Studio — Design smooth keyframe animations with easing curves, timeline previews, and production-ready @keyframes CSS.
CSS Bento Grid & Layout Studio — Visual 12-column Bento Grid designer with responsive breakpoints, column spans, and Apple-style tile layouts.
CSS Organic Blob & Morph Generator — Generate smooth organic 8-value border-radius blobs and morphing fluid shapes with SVG/CSS export.
CSS Custom Scrollbar Studio — Design cross-browser scrollbars for WebKit and modern Firefox with custom thumb colors, hover effects, and track radii.
CSS ↔ JS Style Object Converter — Convert CSS rules to JavaScript/React style objects and back — handles camelCase, vendor prefixes, and numeric values.
SVG → CSS Background Converter — Convert SVG markup into a CSS background-image: url(data:image/svg+xml,...) with proper URL encoding and optimization.
CSS Cursor Playground — Preview all 38 CSS cursor types on a live canvas — test custom cursor images, hotspot coordinates, and fallback stacks.
CSS Multi-Column Layout Generator — Generate CSS multi-column layouts with column-count, column-gap, column-rule, and column-span controls with live preview.
SVG Wave Section Divider — Generate customizable SVG wave dividers for page sections — control amplitude, frequency, layers, colors, and flip direction.
CSS Easing / Bezier Curve Editor — Visual cubic-bezier easing function editor with preset curves, interactive control points, and live animation preview.
CSS Mesh Gradient Generator — Create complex multi-point mesh gradients with draggable color stops, blend modes, and CSS/SVG export.
PX to REM Converter — Convert px to rem and back for any root font size, with a quick reference table and a converter that rewrites every px value in a CSS snippet.

UI Components (9)

Copy-ready UI components for every platform: Flutter, Jetpack Compose, SwiftUI, React Native, React, Vue, Tailwind & HTML/CSS.

Button Components — Copy-ready HTML & CSS for primary, secondary, ghost, outline, icon, and loading button variants.
Card Components — Basic, media, stat, and horizontal card layouts with hover states. Copy HTML & CSS instantly.
Badge & Tag Components — Status badges, pill tags, and dot indicators in every semantic color. Copy-ready snippets.
Alert & Toast Components — Info, success, warning, and error alert boxes plus toast notification templates.
Form Input Components — Styled text inputs, selects, checkboxes, radios, toggles, and textarea with focus states.
Modal & Dialog Template — Accessible modal dialog HTML & CSS with overlay, header, body, footer, and close button.
Navigation Bar Templates — Responsive top navbar and sidebar nav templates in plain HTML & CSS. Ready to drop in.
Hero Section Templates — Centered, split-screen, and gradient hero section HTML & CSS templates. Paste and customize.
UI/UX Component Atlas — 300+ canonical components across Flutter, Jetpack Compose, SwiftUI, React Native, React, Vue, Tailwind & HTML/CSS — live previews, copy-ready code, official docs, and a full ecosystem map.

Color Tools (8)

Convert hex/rgb values, generate harmonic palettes, and simulate.

Screenshot Eyedropper & Palette Picker — Sample colors from app screenshots click-by-click, or pick anywhere with the system eyedropper (Chromium). Export Compose, Flutter, SwiftUI, HEX, and RGB.
Color Converter — Convert color values between HEX, RGB, and HSL with a live color swatch preview.
Color Palette Generator — Generate WCAG-compliant palettes with complementary, analogous, triadic harmonies. Export CSS/Tailwind.
Color Contrast Checker — Check WCAG AA/AAA contrast ratios for text and background color pairs for accessible design.
Advanced Color Picker — Pick colors with an interactive wheel and sliders. Copy as HEX, RGB, HSL, or CSS variable.
Color Blindness Simulator — Preview your palette under protanopia, deuteranopia, tritanopia, and grayscale to design for everyone.
WCAG Contrast & Accessibility Matrix — Calculate color contrast ratios, test against WCAG 2.1 AA/AAA standards for normal/large text, and preview components live.
Color Converter (RGB, HEX, HSV, CMYK) — Convert any colour between HEX, RGB, HSV/HSB, and CMYK in one editable form - print-ready CMYK percentages and web-ready values, updated live as you type.

Security Tools (20)

Generate cryptographically secure passwords and strength metrics.

Hash Generator — Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from any text — runs entirely offline.
Password Generator — Generate cryptographically secure passwords with custom length, symbols, and exclusions.
TOTP 2FA Code Generator — Generate RFC 6238 time-based one-time passwords from a base32 secret using Web Crypto. Codes rotate every 30 seconds.
AES-256 Encrypt/Decrypt — Encrypt and decrypt text with AES-256-GCM and PBKDF2 key derivation - a fresh random salt and IV every run.
RSA Key Pair Generator — Create 2048-4096 bit RSA key pairs as PEM with the Web Crypto API - generated and kept entirely on your device.
HMAC Generator — Generate HMAC signatures with SHA-256 or SHA-512 using a secret key — runs fully offline.
JWT Generator (HS256) — Sign test JWTs locally with HS256 via Web Crypto — custom claims, expiry, and issuer, nothing leaves your device.
JWT Generator & Client-Side Signer — Create and cryptographically sign JSON Web Tokens with HMAC-SHA256 offline using native Web Crypto.
HTTP Basic & Bearer Auth Header Generator — Generate RFC 7617 Basic Auth and RFC 6750 Bearer headers with copy-ready cURL, Fetch, Python, and Go code snippets.
Bcrypt Hash & Verify — Hash passwords with bcrypt at configurable cost factors (4-31) and verify strings against existing bcrypt hashes — all in-browser.
Scrypt / Argon2id Hasher — Modern password hashing with scrypt and Argon2id — configure memory, iterations, and parallelism for OWASP-compliant outputs.
BIP39 Mnemonic Seed Generator — Generate cryptographically secure BIP39 mnemonic seed phrases (12/15/18/21/24 words) with checksum validation and entropy display.
Password Strength Analyzer — Deep password strength analysis using zxcvbn scoring — crack time estimates, pattern detection, and actionable improvement suggestions.
PGP / GPG Key Pair Generator — Generate RSA or ECC PGP key pairs in-browser with OpenPGP.js — export public and private keys in ASCII-armored format.
CSP Header Generator — Build Content-Security-Policy headers interactively — configure directives for scripts, styles, images, fonts, frames, and report-uri.
CORS Header Builder — Generate Access-Control-Allow-Origin, Methods, Headers, and Credentials CORS response headers with preset configurations.
XOR Cipher Encrypt / Decrypt — Apply XOR encryption with single-byte or multi-byte keys — supports hex, UTF-8, and Base64 key formats with brute-force analysis.
JWT Secret Brute-Force Checker — Test common weak secrets and custom wordlists against a JWT's HMAC signature to verify if a secret is guessable.
Entropy / Randomness Analyzer — Calculate Shannon entropy, chi-squared, mean byte value, and Monte Carlo Pi for input data to detect encryption or compression.
HTTP Security Headers Analyzer — Paste raw response headers to grade CSP, HSTS, X-Content-Type-Options, framing, Referrer-Policy, Permissions-Policy, COOP/COEP/CORP and cookie flags, with a concrete fix for each. Nothing is fetched.

Unit Converters (7)

Convert metric, imperial, temperature, and storage parameters.

Unit Converter — Convert length, weight, temperature, speed, area, volume, and data storage in any unit.
BMI Calculator — Calculate Body Mass Index from metric or imperial measurements with WHO adult categories. A screening measure, not a diagnosis.
Age Calculator — Exact age in years, months, and days — plus total days, weeks, hours, and a next-birthday countdown.
Date Difference Calculator — Count days, business days, and weekend days between any two dates — perfect for deadlines and notice periods.
Temperature Converter — Convert between Celsius, Fahrenheit, Kelvin, and Rankine with formula display, live bidirectional updates, and common reference points.
Number to Words Converter (International & Indian) — Spell any number in words - international (million, billion) or Indian (lakh, crore) system, with decimals, negatives, and cheque-style USD/INR currency wording.
Comprehensive Unit Converter (Pressure, Energy, Power & more) — Convert pressure, energy, power, force, frequency, angle, torque, density, and fuel economy with exact SI factors - including the inverse L/100km axis.

Finance & Math (17)

Calculate percentage matrices, loan EMIs, and bio indices.

EMI Calculator — Calculate Equated Monthly Installments for loans. See full amortization breakdown.
Percentage Calculator — Five live panels: percent-of, share, increase/decrease, add/subtract a percentage, and reverse percentage.
Scientific Calculator — Full expression calculator with trig, logs, powers, constants, and degree/radian modes plus a session history.
SIP Calculator — Project systematic investment plan growth with monthly compounding, returns breakdown, and a yearly value table.
GST Calculator — Add or reverse-calculate GST at standard slabs with CGST/SGST split for intra- and inter-state supplies.
GPA Calculator — Compute your semester GPA on the 4.0 scale with unlimited courses, credits, and letter grades.
Credit Card Validator (Luhn) — Validate card numbers with the Luhn checksum, detect the network (Visa, Mastercard, Amex…), and flag length anomalies.
Compound Interest Calculator — Project savings growth with monthly contributions, custom compounding frequency, and live future-value math.
VAT / GST / Sales Tax Calculator — Add or remove tax from any amount — supports back-calculation and common worldwide rates in one tap.
Tip & Bill Split Calculator — Calculate tips, split bills between friends, and round the total — per-person amounts update live.
Statistics Calculator — Mean, median, mode, standard deviation, variance, and range for any list of numbers — instant as you type.
Discount Calculator — Apply single or stacked discounts to a price and see the final price, total savings, and effective discount.
Take-Home Salary Calculator — Estimate net salary from gross with your own tax, social, and pension rates — monthly, weekly, and yearly views.
Unit Price Comparison — Compare two products by price per gram, liter, or piece to instantly find the better value.
Random Number Generator — Generate random numbers in any range with optional no-duplicates — for draws, games, and sampling.
Loan Offer Comparison — Compare two loan offers side by side — monthly payment, total cost, and which one actually saves you money.
Invoice Generator — Design invoices your way: 5 templates, live A4 preview, drag-and-drop line items, logo, accent colors, tax & discounts — print or export, nothing stored.

Image Tools (12)

Compress, resize, crop, watermark, and inspect images entirely in your browser.

App Store Icon Generator — Upload one 1024px master icon and export the iPhone, iPad, and App Store sizes (20-1024px) as an Xcode-ready AppIcon.appiconset ZIP.
Play Store Icon Generator — Generate the full Android icon set from one image: Play 512px listing icon, 1024x500 feature graphic, adaptive foregrounds with safe zones, and legacy mipmaps.
Image Compressor — Shrink JPEG and WebP file sizes with a quality slider and optional max-width. Preview the result and see exactly how many percent you saved.
Image Resizer — Resize images to exact pixel dimensions with aspect-ratio lock, and convert between PNG, JPEG, and WebP in one step.
Image Cropper — Crop any image by dragging a selection, with rotate and flip controls. Export production-ready PNG or JPEG.
Image to PDF — Combine JPG and PNG images into a single PDF with page size, orientation, and margin controls. Fully offline.
Image Watermark — Stamp a text watermark on any image with position, opacity, color, and rotation controls. Preview live, export at full resolution.
EXIF Viewer & Remover — Inspect photo metadata - camera make and model, date taken, GPS - and download a clean copy with all EXIF data stripped.
Signature Drawing — Draw your signature with mouse, pen, or touch and export a transparent or white-background PNG.
QR & Barcode Scanner — Decode QR codes and barcodes from images or your camera using the native BarcodeDetector engine - no uploads.
SVG Placeholder Image Generator — Generate custom SVG placeholder images with configurable dimensions, colors, text, fonts, and border radius — instant data URI output.
SVG Optimizer — Safely optimize SVG files in-browser with a DOM parser — remove comments, metadata and editor artifacts, round decimals, and minify without corrupting paths, CDATA or styles.

File Converters (10)

Convert images and extract text from PDFs securely offline.

Favicon Generator — Convert any PNG/SVG to a favicon. Generate 16×16, 32×32, and 48×48 ICO-compatible sizes.
Universal Image Studio — Convert between PNG, JPG, WebP, and GIF. Resize, compress, and download — fully offline.
PDF to Text Extractor — Extract raw text from any PDF file in-browser using PDF.js. No upload to any server.
DOCX to HTML Converter — Convert Word .docx documents to clean HTML using Mammoth.js — no server required.
PDF Merger — Combine multiple PDF files into a single document. Drag-and-drop pages, export instantly.
PDF Page Splitter — Extract specific pages or page ranges from a PDF and download as a new file.
Image ↔ Base64 — Convert images to Base64 data URIs for use in CSS, HTML, or APIs. Decode back to image.
SVG Optimizer — Optimize SVG files by removing metadata, comments, and unnecessary attributes. Reduce file size.
PDF Signature Presence Checker — Detects whether a PDF contains digital-signature dictionaries (/ByteRange, /SubFilter) and shows their values. Detection only — it does not validate certificates or trust.
Excel to JSON / CSV Converter — Open .xlsx, .xls, or .csv files, pick a worksheet, and convert it to JSON or CSV entirely in your browser - the workbook never leaves your device.

Productivity (20)

Protect focus, build habits, and keep useful work local to your browser.

Random Picker Wheel — Spin an animated decision wheel with up to 16 options - giveaways, team picks, and dinner debates settled fairly.
Online Notepad — Distraction-free scratchpad that autosaves to your browser every half second. Download notes as .txt anytime.
Voice Recorder — Record audio from your microphone with a live timer, preview playback, and download - recordings never leave your browser.
Developer Pomodoro Timer — 25-minute focus sessions with break tracking, session history, and browser notifications.
CruxDev Flashcards — Master IT, CS, and AI concepts with Leitner spaced-repetition flashcards stored locally.
Big-O Complexity Matrix — Compare time and space complexity of sorting and searching algorithms side-by-side.
Professional Résumé Builder — Build ATS-ready résumés with 9 templates, live preview, ATS score, and PDF export.
System Design Whiteboard — Design architecture boards your way: editable nodes with custom types, per-node colors, glass or solid styles, drag positioning, and JSON export.
Client-side API Tester — Send HTTP requests with custom headers and bodies. Inspect responses — no proxy needed.
CruxDev Nano AI Tutor — Ask technical questions answered by Chrome's built-in AI or a deterministic fallback engine.
Distraction-free Markdown Editor — Write Markdown in a minimal, quiet workspace. Auto-saves drafts to your browser.
Git Commands Reference — Searchable cheatsheet for Git — every command with flags, examples, and workflow notes.
Text to Speech Reader — Read any text aloud with your system voices — adjustable speed and pitch, processed entirely on-device.
World Clock — Track current time across any timezones with work-hours highlighting — updates every second.
Meeting Time Planner — Find the best hour for a call across two timezones — every hour rated great, workable, or unsociable.
Countdown Timer — Full-screen countdown with presets, progress bar, and a completion chime — for focus blocks and breaks.
Online Stopwatch with Laps — Precision stopwatch with lap timing, splits, and totals — centisecond accuracy via the performance clock.
Cron Expression Builder & Explainer — Visual 5-field cron builder with human-readable English breakdown and instant schedule presets.
Camera & Screen Recorder — Record your webcam, screen, or both with webcam picture-in-picture — configurable resolution and audio, saved as MP4 or WebM locally. No uploads.
Webcam Test — Test your camera in seconds: live preview, detected resolution, device switching, and mirror toggle - nothing is recorded or uploaded.

Network & Web Tools (16)

IP converters, subnet calculators, MAC generators, port tools, URL parsers, and web header builders — all offline.

IPv4 Address Converter — Convert IPv4 addresses between dotted decimal, hexadecimal, binary, octal, and integer representations.
IPv4 CIDR Range Expander — Expand a CIDR block (e.g. 192.168.1.0/24) into the full list of IP addresses with network and broadcast identification.
IPv6 ULA Generator — Generate RFC 4193 Unique Local IPv6 addresses from a random or custom 40-bit Global ID with full /48 prefix output.
MAC Address Generator — Generate random MAC addresses with configurable separators (colon, hyphen, dot) and unicast/multicast/universal/local bits.
MAC Vendor Lookup — Identify the hardware vendor from a MAC address OUI prefix using an offline IEEE database — no network calls.
Random Port Generator — Generate random unused port numbers in configurable ranges (1024-49151 registered, 49152-65535 ephemeral) with well-known port avoidance.
WiFi QR Code Generator — Generate QR codes for WiFi credentials — enter SSID, password, and encryption type (WPA/WPA2/WEP/None) to share networks instantly.
SafeLink / URL Unwrapper — Decode Microsoft SafeLinks, Google AMP redirects, Bitly, and other URL wrappers to reveal the actual destination URL.
URL Parser & Dissector — Break any URL into protocol, host, port, path, query parameters, hash fragment, and origin — with individual field editing.
Meta Tag & Open Graph Generator — Generate HTML meta tags, Open Graph, Twitter Card, and JSON-LD structured data with live preview of social sharing cards.
MIME Type Lookup — Search file extensions to find MIME types and vice versa — covers 800+ registered IANA media types with descriptions.
ETA / Download Time Calculator — Estimate file download and upload times from file size and connection speed — supports Mbps, MB/s, and real-world overhead factors.
Device & Browser Information — Display your browser, OS, screen resolution, GPU renderer, CPU cores, memory, battery status, connection type, and installed plugins.
Punycode / IDN Converter — Convert internationalized domain names (IDN) to Punycode and back — supports full domain and individual label conversion.
IPv6 Subnet Calculator & Address Inspector — Expand or compress any IPv6 address (RFC 5952 canonical form), compute network, first/last address, and total size for any prefix length with exact 128-bit math, and identify the address type.
UTM Campaign URL Builder — Build Google Analytics UTM links with source, medium, campaign, term and content - keeps existing query params and warns about inconsistent values.