100 tools
All AyeTab tools
Free online developer utilities: formatters, converters, generators, and more. Every tool runs in your browser. Nothing is uploaded.
Format & Validate
- JSON FormatterFormat, validate, and minify JSON
- Line Sort/DedupeSort lines and remove duplicates
- HTML FormatterBeautify and minify HTML
- CSS FormatterBeautify and minify CSS
- JS FormatterBeautify and minify JavaScript
- SQL FormatterFormat SQL queries with syntax highlighting
- XML FormatterBeautify and minify XML
- ERB FormatterBeautify ERB templates
- LESS FormatterBeautify LESS stylesheets
- SCSS FormatterBeautify SCSS stylesheets
Data Converter
- Color ConverterConvert between HEX, RGB, HSL color formats
- Number Base ConverterConvert between binary, octal, decimal, hexadecimal
- String Case ConverterConvert between camelCase, snake_case, kebab-case, and more
- YAML ↔ JSONConvert between YAML and JSON formats
- JSON ↔ CSVConvert between JSON and CSV formats
- URL ParserParse URL into components
- Hex ↔ ASCIIConvert between hex and ASCII strings
- HTML → JSXConvert HTML markup to React JSX
- SVG → CSSConvert SVG to CSS background-image
- cURL → CodeConvert cURL commands to fetch/Python code
- JSON → CodeGenerate TypeScript or Go types from JSON
- PHP Serialize/UnserializeSerialize and unserialize PHP data structures
- Query String ↔ JSONConvert between query strings and JSON
Inspect & Debug
- Unix Time ConverterConvert Unix timestamps to human-readable dates
- JWT DebuggerDecode and inspect JWT tokens
- RegExp TesterTest and debug regular expressions
- Text DiffCompare two texts and find differences
- Markdown PreviewLive preview of markdown content
- Cron ParserParse and explain cron expressions
- String InspectorAnalyze text statistics and character codes
- HTML PreviewRender HTML in a sandboxed preview
- Certificate DecoderDecode and inspect X.509 certificates
- Tailwind Cheat SheetSearchable quick reference for Tailwind utility classes
Encode & Decode
- Base64 Encode/DecodeEncode and decode Base64 strings
- URL Encode/DecodeEncode and decode URL strings
- HTML Entity Encode/DecodeEncode and decode HTML entities
- Backslash Escape/UnescapeEscape and unescape backslashes in strings
- Base64 ImageEncode and preview Base64 images
- Cipher DecoderDecode classical ciphers manually or by auto-detection
Generators
- Hash GeneratorGenerate MD5, SHA-1, SHA-256, SHA-512 hashes
- UUID GeneratorGenerate random UUIDs (v4)
- Lorem Ipsum GeneratorGenerate placeholder text
- Random String GeneratorGenerate random strings with custom charset
- QR Code GeneratorGenerate QR codes from text or URLs
- ULID GeneratorGenerate and decode ULIDs
- Draw & WriteSketch diagrams, notes, and whiteboards: saved locally
- Barcode GeneratorGenerate Data Matrix, Aztec, PDF417, Code 128, EAN-13 and more
- Styled QR GeneratorGenerate styled QR codes with custom colours, shapes and a logo
- Meta Tag GeneratorGenerate HTML meta, Open Graph and Twitter card tags
Colour
- Palette GeneratorGenerate beautiful colour palettes from a seed colour
- Palette CollectionBrowse a curated library of colour palettes
- Palette ExtractorExtract a dominant colour palette from any image
- Pixel PickerSample colours from any image with a zoom loupe
- Colour Blindness SimulatorSimulate how colours appear to colour blind users
- Contrast CheckerCheck WCAG colour contrast compliance
- Gradient GeneratorCreate linear, radial, conic, and mesh gradients
- Harmony GeneratorGenerate complementary, triadic, and analogous colour harmonies
- Tailwind Shade GeneratorGenerate a full Tailwind 50–950 colour scale from one colour
Images & Assets
- Image EditorCrop, rotate, adjust and mark up images in the browser
- Background RemoverRemove flat or chroma-key backgrounds from images
- Artwork EnhancerAdd a colour noise and grain overlay to artwork
- Favicon GeneratorGenerate a full favicon set from any image
- Image ClipperTrim transparent edges from PNGs to the smallest bounding box
- Image ConverterConvert between PNG, JPEG, WebP, BMP and ICO with resize options
- Image SplitterSplit an image into a grid of tiles
- Image StitcherCombine multiple images into one horizontally or vertically
- Image TracerTrace raster images into SVG vector paths
- Paste ImagePaste an image from your clipboard and download it
- Placeholder GeneratorGenerate placeholder images at any size
- SVG OptimiserOptimise and minify SVG files
- Matte GeneratorPut non-square images on a square matte for social posts
- Seamless Scroll GeneratorSplit a wide image into a seamless Instagram carousel
- Social Media CropperCrop images to Instagram, Bluesky, X and Threads presets
- WatermarkerAdd text or image watermarks to your images
Typography & Text
- Document ConverterConvert between Markdown, HTML, plain text and rich text
- Font File ExplorerInspect font file metadata, glyphs and OpenType features
- Glyph BrowserBrowse and copy Unicode glyphs by block
- Large TypeText, but big: for reading numbers across the room
- Line Height CalculatorCalculate optimal line height from font size and measure
- Paper SizesReference for A, B, C, US and envelope paper dimensions
- PX to REMConvert between pixels, rem, em and percent
- Text EditorDistraction-free Markdown writer with live preview
- Text ScratchpadScratch text with case, sort, dedupe and trim tools
- Typography CalculatorConvert between points, picas, pixels, ems and millimetres
- Word CounterCount words, characters, sentences and reading time
- Shavian TransliteratorTransliterate English text into the Shavian alphabet
Print & Production
Calculators
- Scientific CalculatorFull-featured scientific calculator with history
- Graph CalculatorPlot and visualise mathematical functions
- Algebra CalculatorSymbolic algebra: simplify, expand, solve and derive
- Time CalculatorDate arithmetic, duration maths and timezone conversion
- Unit ConverterConvert length, mass, area, volume, data, speed and temperature
Productivity
- To-Do ListManage daily tasks with priorities: saved locally
- Kanban BoardOrganize work in columns with drag-and-drop: saved locally
- Pomodoro TimerFocus with timed work and break sessions: saved locally
- Quick NotesCapture ideas in a simple notepad: saved locally
- StopwatchTrack elapsed time with lap splits: saved locally
- Habit TrackerBuild daily habits with a simple streak tracker: saved locally