JSON formatter, Base64, regex tester, hashes & more.
Pretty-print and validate JSON with error positions.
Encode or decode Base64 text (UTF-8 safe).
Test regular expressions with flags and match listing.
Percent-encode or decode URLs and query strings.
SHA-1, SHA-256 and SHA-512 digests of any text.
Download speed and ping with a small test you start yourself. Approximate result.
Random v4 UUIDs, one or many at once.
Epoch seconds/ms to dates and back.