// category
Security Tools
Encode, decode and inspect — never transmit.
Inspect JWTs, encode Base64 payloads, and stress-test passwords with zxcvbn. Everything is decode-only and stays inside your browser: no token, password, or payload is ever transmitted or logged.
Base64 Encoder
Encode/decode Base64 with proper UTF-8 handling. Optional URL-safe alphabet.
JWT Decoder
Decode JWT header and payload with human-readable timestamps. Signature verification is intentionally out of scope.
Password Generator
Generate strong passwords with configurable length, character sets and exclusions.
Password Strength Checker
Test passwords with zxcvbn. See score, estimated crack time and actionable feedback.
// FAQ — Security
// Other categories
JSON
Format, validate, minify, and convert JSON — all in your browser.
Code
Beautify and minify HTML, CSS, JavaScript and SQL.
Generators
UUIDs, QR codes, barcodes and lorem ipsum.
API
Inspect API responses without hitting the network.
CSS / UI
Generate, customize, preview and copy production-ready CSS with free browser-based developer tools.
PDF Tools
Merge, split, rotate, organize, and convert PDF documents securely in your browser. No installation, registration, or paid subscription required.
Image
Edit, crop, resize and export images privately in your browser.