UUID Generator
Generate cryptographically random UUID v4 identifiers, or time-ordered UUID v7, in bulk with formatting options.
0 identifiers
Options
Off gives the 32-character compact form.
About v4
Version 4 is 122 bits of cryptographic randomness. Collisions are not a practical concern, but the values have no order, so using them as a primary key scatters writes across a B-tree index.
About the uuid generator
Generates v4 UUIDs from the platform cryptographic random source, or v7 UUIDs whose leading bits encode a timestamp so they sort chronologically — handy as database keys. Produce up to 1000 at a time, switch to uppercase, strip the hyphens or wrap each in braces or quotes, then copy the whole batch or download it as a text file.
This tool runs entirely in your browser. Nothing you type is uploaded, and it keeps working with no connection at all — including as an installed app.