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Your everyday developer toolbox

Search a tool, or paste JSON, a JWT, a timestamp or a cron expression. Everything runs locally. Nothing you paste is sent to a server.

All tools

Formatting

JSON Diff Compare two JSON documents and list every added, removed, and changed value, with paths.
JSON Formatter Format, validate, and minify JSON, and explore it as a tree.

Encoding and crypto

Base64 Encode / Decode Encode text to Base64 or decode it back, including URL-safe Base64.
JWT Decoder Decode a JSON Web Token and inspect its header, claims, and expiry.

Generators

Time and dates

Text

Regex Tester Test JavaScript regular expressions with live highlighting, capture groups, replacement, and a plain-English explanation.