// Toolbox
17 developer tools. 0 uploads.
Everything runs in your browser with no backend at all, so they're safe for API keys, tokens and production data. Press ⌘K anywhere to jump to a tool.
17 tools
- Convert
PPK to PEM Converter
Convert PuTTY .ppk keys to PEM and PEM keys to .ppk, with passphrase support.
- Generate
QR Code Generator
Branded QR codes with logos, gradients and frames. PNG & SVG.
- Generate
Password Generator
Strong random passwords with entropy meter, using crypto.getRandomValues.
- Format
JSON Formatter
Format, validate, minify and sort JSON with exact error positions.
- Encode
Base64 Encoder / Decoder
Encode and decode Base64 and Base64URL text or files, UTF-8 safe.
- Encode
URL Encoder / Parser
Percent-encode, decode and break URLs into parts and query params.
- Encode
JWT Decoder
Inspect JWT headers, claims and expiry without sending tokens anywhere.
- Encode
HTML Entity Encoder
Escape and unescape HTML entities, named and numeric.
- Generate
Hash Generator
SHA-1, SHA-256, SHA-384, SHA-512 and HMAC for text and files.
- Generate
UUID Generator
Bulk UUID v4 and time-sortable v7, plus a UUID inspector.
- Convert
Unix Timestamp Converter
Epoch seconds/ms/µs/ns to dates and back, in UTC and local time.
- Convert
Number Base Converter
Binary, octal, decimal, hex and any base 2–36, with arbitrary size.
- Convert
Color Converter
HEX, RGB, HSL and OKLCH conversions with WCAG contrast check.
- Text
Regex Tester
Live JavaScript regex matching with highlights, groups and replace.
- Text
Text Diff
Compare two texts line-by-line or word-by-word.
- Text
Case Converter
camelCase, snake_case, kebab-case, PascalCase and more.
- Text
Word & Character Counter
Count words, characters, bytes, lines and reading time.