How to use it

  1. Pick a tab: Base64, URL, HTML, Hash, JWT or UUID.
  2. Paste your text or drop a file. Results appear as you type, and Swap sends the result back the other way.
  3. Copy what you need. On the Hash tab, paste the checksum from a download page to see if your file matches.

What it’s for

Everyday developer chores: decoding a Base64 string from an email header or API, fixing a link full of %20s, turning an image into a data URL, checking that a download was not corrupted, peeking inside a login token to see when it expires, or grabbing a few fresh UUIDs. Tokens and files stay on your device, which matters because tokens often grant access to accounts.