Toolz🔒 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 and SHA-256 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.
Contrast Checker
Check WCAG contrast ratios between two colors for AA/AAA compliance.
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.