🔒 Nothing you paste ever leaves your browser
Little tools that just work.
Free, fast, private utilities — no sign-up, no upload, no waiting.
JSON Formatter
Validate and pretty-print JSON, right in your browser.
Base64 Converter
Encode text to Base64 and decode it back, instantly.
UUID Generator
Generate cryptographically random UUIDs, one or in bulk.
QR Code Generator
Turn any text or link into a downloadable QR code.
Hash Generator
Compute MD5, SHA-1, SHA-256 and SHA-512 hashes of any text.
URL Encoder/Decoder
Percent-encode and decode any string safely.
Password Generator
Build strong random passwords with the rules you choose.
Word & Character Counter
Count words, characters, sentences and reading time.
Case Converter
Switch text between camelCase, snake_case, kebab-case and more.
Color Converter
Convert colors between hex, RGB and HSL notation.
Palette Generator
Turn one brand color into an 11-step tint scale, annotated with WCAG contrast.
Color Harmonies
Build complementary, triadic, tetradic, analogous, split and monochrome schemes from one color, computed in OKLCH.
Color System Generator
Turn one brand color into a full set of color tokens: scales, accents, light and dark themes, ready to paste.
Gradient Generator
Build linear, radial and conic CSS gradients, and compare sRGB with OKLab interpolation.
Dark Mode Palette Converter
Turn a light palette into a coherent dark one in OKLCH, contrast-checked and ready to paste.
Contrast Checker
Check WCAG contrast ratios between two colors for AA/AAA compliance, and get the closest passing color.
Timestamp Converter
Translate Unix timestamps to human dates and back.
Lorem Ipsum Generator
Generate placeholder paragraphs, sentences or words.
Markdown Previewer
Write Markdown and see the rendered result side by side.
Diff Checker
Compare two texts and highlight what changed between them.
Random Winner Picker
Pick one or several random winners from a pasted list, fairly and unpredictably.
Aspect Ratio Calculator
Find a missing width or height from a ratio, or simplify dimensions to a ratio.
Regex Tester
Test a regular expression against text with live match highlighting.
JWT Decoder
Decode a JWT’s header and payload, read its expiry claims, and verify its signature locally.
Number Base Converter
Convert numbers between binary, octal, decimal and hexadecimal.
Unit Converter
Convert length, weight, temperature, volume, area, speed and data units instantly.
Percentage Calculator
Work out a percentage of a number, what percentage one number is of another, or the change between two.
Image Converter
Convert images between PNG, JPEG and WebP without uploading them anywhere.
Image Compressor
Shrink and resize images in your browser, with the result weighed as you go.
Image Color Extractor
Pull the dominant colours out of any image, with coverage percentages and an eyedropper — all in your browser.