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Developer Tools
Regex Tester
Test regular expressions
Encoding Tools
Base64, URL encoding, and hash generation
JSON FormatterBeta
Format, validate, and minify JSON with indentation options
URL ParserNew
Parse URLs, edit query params, and compare two links
YAML / TOML / XML Formatter + ConverterNew
Format, validate, minify, and convert between JSON, YAML, TOML, and XML
UUID / ULID / NanoID GeneratorNew
Generate UUID v4/v7, ULID, and NanoID values in bulk
SQL FormatterNew
Simple, fast, paste-and-go SQL prettify/minify with keyword casing and dialect support
JWT Decoder / InspectorNew
Decode JWT headers and payloads, inspect timing claims, and verify signatures locally
Markdown Preview / Markdown ↔ HTMLNew
Live GFM preview with sanitized HTML output and HTML-to-markdown conversion
Case Converter / SlugifyNew
Convert text between common naming cases and slugify titles or filenames
Text Diff / CompareNew
Compare two text blocks with inline and side-by-side views
Calculators
Scientific Calculator
Full-featured scientific calculator with history
Graph Calculator
Plot and visualise mathematical functions
Algebra Calculator
Symbolic algebra: simplify, factor, solve, derivatives
Base Converter
Convert between decimal, hex, binary, and octal
Time Calculator
Unix timestamps, date arithmetic, timezone conversion
Unit Converter
Convert between units of length, weight, data, and more
Social Media
Color
Color Converter
Convert between color formats
Tailwind Shade Generator
Generate Tailwind color scales
Harmony Generator
Generate color harmonies
Palette Generator
Generate beautiful color palettes
Palette Collection
Browse curated color palettes
Contrast Checker
Check WCAG color contrast compliance
Color Blindness Simulator
Simulate how colors appear to color blind users
Gradient GeneratorNew
Create linear, corner, and mesh gradients
Images & Assets
Favicon Generator
Generate favicons from any image
SVG Optimizer
Optimize and minify SVG files
Placeholder Generator
Generate placeholder images
Image Splitter
Split images into tiles
Image Converter
Convert between PNG, JPEG, WebP, AVIF, GIF, BMP, TIFF, ICO, ICNS with resize and format options
Artwork Enhancer
Add color noise overlay to artwork
Background RemoverBeta
Remove backgrounds from images automatically
Image TracerNew
Trace raster images to SVG vectors
Typography & Text
PX to REM
Convert pixels to rem units
Line Height Calculator
Calculate optimal line heights
Typography Calculator
Convert between typographic units
Paper Sizes
Reference for paper dimensions
Word Counter
Count words, characters and more
Glyph Browser
Browse unicode glyphs
Font File Explorer
Explore font file contents
Print & Production
Other Tools
Text Scratchpad
Text editor with manipulation tools
Tailwind Cheat Sheet
Quick reference for Tailwind classes
QR Generator
Generate styled QR codes with custom colors, shapes, and logos
Barcode Generator
Generate Data Matrix, Aztec, PDF417, Code 128, EAN-13, and more
Meta Tag Generator
Generate HTML meta tags
About
Tools is a collection of small, focused utilities that respect your privacy and work entirely in your browser. No data leaves your machine, no accounts required, no tracking. Just tools that do what they say.
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Built with Next.js, Tailwind CSS, and shadcn/ui. All processing happens locally in your browser.
Forked from delphitools.