Developer utilities

No ceremony, no accounts — paste in, get the formatted or encoded result back.

A missing comma in a large JSON blob, or a Base64 string that silently fails to decode, both cost more debugging time than the fix itself. These developer utilities format, validate and encode directly in the browser, so pasting in a payload from a real project doesn't mean sending it to a server first.

3 tools in Developer

Base64 Encoder / DecoderEncode and decode Base64 text and files instantly, entirely client-side, with no upload and no size limit imposed by a server.
JSON FormatterFormat, validate and beautify JSON in the browser with inline error locations — what you paste is parsed on your own device rather than sent to a server.
UUID GeneratorGenerate random v4 UUIDs and GUIDs in bulk, copyable individually or as a list, computed locally in your browser with no server round-trip for a single one.