Free online developer tools | Aeravel Ventures

Tools

Free tools for everyday developer work. Each one runs in your browser, uploads nothing and needs no account. We built them because we use them.

Everything runs in your browser. Nothing you paste is sent anywhere or saved: this page is served with a Content Security Policy that stops it from opening connections (connect-src 'none'), and it has no analytics or ads. Open your browser's Network tab to check that no request carries what you paste.

Compare

JSON compareSee each added, removed or changed value, with its path.
Text compareLine by line, with the changed words marked.

Postgres

Postgres EXPLAIN visualizerPaste EXPLAIN ANALYZE output and see where the time goes.

JSON and tokens

JSON formatter and validatorFormat, compact, sort and validate, with line and column errors.
JWT decoderRead the claims, check the dates, verify the signature.

More tools follow as we need them. If one of these is missing something, tell us through the contact page.