Small tools that do one thing, run entirely in your browser and need no account.
Runs entirely in your browser. Nothing you paste here is sent to us or to anyone else.
Break a cron expression into fields and see the next five runs in your own timezone.
Convert text to Base64 and back. Handles Unicode correctly.
Format JSON, or find out exactly where it breaks.
Percent-encoding for query parameters and paths.
Epoch seconds or milliseconds to a readable date, and back.
Random identifiers, generated locally.
SHA-1, SHA-256, SHA-384 and SHA-512 of any text.
Test a JavaScript regular expression against sample text.
Octal and symbolic Unix permissions, in both directions.
IPv4 network, broadcast, mask and usable host range.
Random passwords and secrets from your browser crypto source.
What each code means, and what it means for a monitor.