On-device utilities
Small, fast developer and text tools that run entirely in your browser — nothing you paste is uploaded.
JSON formatter
Format, validate and minify JSON with clear error messages.
Base64 encode / decode
Convert text to and from Base64, with UTF-8 handling.
URL encode / decode
Percent-encode or decode text for safe use in URLs.
JWT decoder
Decode a JSON Web Token's header and payload — locally.
Hash generator
SHA-1, SHA-256, SHA-384 and SHA-512 of any text.
UUID generator
Generate random v4 UUIDs, one or many at a time.
Timestamp converter
Unix epoch ↔ human-readable date, in your timezone and UTC.
Word counter
Count words, characters, sentences and reading time as you type.