CEZAMDeveloper
Free, no sign-up. Your data never leaves the browser.
JSON formatter
Indent, validate, minify.
JWT decoder
Header, payload, expiry.
Timestamp converter
Unix ↔ readable date, any zone.
Base64 encoder
Text and files, both ways.
UUID generator
v4 and v7, in batches.
Regex tester
Highlighted matches, named groups.
Text diff
Line and word level differences.
URL encoder
Components and query strings.
Hash generator
SHA-256, SHA-1, MD5 — locally.