Is JWT decoding secure?

Decoding is for debugging only — signatures are not verified. Never paste production secrets.

Does the API tester call any URL?

Server-side API testing can be disabled in production; browser tools still work for local debugging.

Developer Tools

Format JSON, decode JWTs, test regex, preview Markdown, and build API requests in one workspace.

Validate, beautify, minify, inspect size, and copy clean JSON output.

Test JavaScript regular expressions with flags, match counts, groups, and positions.

Preview Markdown as sanitized HTML and copy either source or rendered HTML.

Build HTTPS requests, generate cURL, add headers, send requests, and inspect responses.

Decode JWT header and payload JSON locally without signature verification.

SHA-1, SHA-256, SHA-384, and SHA-512 hashes for text — runs in your browser.

Browser-based developer utilities: JSON formatting, regex testing, Markdown preview, JWT decode, text hashing, and API requests.

1Open a developer tool. Pick JSON, regex, Markdown, JWT, text hash, or API tester.
2Paste or type input. Most tools run locally or via the DocLity API.
3Copy the result. Use formatted output in your project.

Is JWT decoding secure?: Decoding is for debugging only — signatures are not verified. Never paste production secrets.
Does the API tester call any URL?: Server-side API testing can be disabled in production; browser tools still work for local debugging.