JWT Decoder
Decode a JSON Web Token to read its header and payload.
Open toolFree tools
Developer tools
Small, fast utilities that run entirely in your browser — nothing is uploaded to a server. Built by Aman Kumar Singh alongside the engineering blog.
UUID Generator
Generate random version 4 UUIDs in your browser.
Open toolBase64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to text.
Open toolJSON Formatter & Validator
Pretty-print, minify, and validate JSON.
Open toolCron Expression Explainer
Translate a cron schedule into plain English.
Open toolUnix Timestamp Converter
Convert between Unix epoch time and human dates.
Open toolSlug Generator
Turn any title into a clean, URL-safe slug.
Open toolURL Encoder / Decoder
Percent-encode text for URLs, or decode it back.
Open toolPassword Generator
Generate strong random passwords in your browser.
Open toolHash Generator
Compute SHA-1, SHA-256, SHA-384, and SHA-512 hashes.
Open tool