Generate UUID
Generate unique identifiers. The randomness comes from the system’s cryptographic generator, not from Math.random, which promises nothing about being unpredictable.
Your text stays on your device: nothing is uploaded
Result
Paste something on the left: the result appears as you type.
How it works
A UUID v4 is sixteen random bytes: the chance of generating the same one twice is so small that it does not happen, and you need to coordinate with nobody to be sure it is unique. It is the right choice almost always. v7 exists for one specific problem: if you use UUIDs as a database primary key, v4s end up scattered across the whole index and every insert touches a different part of the disk. v7 puts the timestamp in the leading bits, so two generated in sequence sort themselves and land near each other. ULID solves the same problem with an alphabet you can read aloud without ambiguity: no I, L, O or U, because the first three get confused with 1 and 0. Everything is generated on this page, so nobody — us included — knows which numbers you got.
What you paste is never uploaded. Anywhere.
Not to a server of ours, not to a third party, never. The text you type stays in your browser’s memory: it is read, processed and shown here, and you copy it. There is no path that takes it elsewhere, because there is no server to send it to. You can paste something confidential.
- Processed locallyThe computation happens on this page, using the browser’s own engine: no request goes out while you type.
- Nothing to upload, nothing to wait forOther services send your file to a server and then send it back to you. Here the file never leaves: there is no upload to wait for.
- No accountNo sign-up, no email, no daily limits to get around by paying.
- Nothing to deleteOthers promise to delete what you paste after an hour. We have nothing to delete: it never reached us.