Choose 1–1000 UUIDs, the hyphen format and letter case, then generate. Copying or downloading exports the full result. Generate again after changing parameters.
Generation and processing take place in your local browser. This tool does not upload or save generated UUIDs; refreshing discards them. Copied content is managed by the system clipboard, which reset does not clear.
The browser uses the Web Crypto secure random source to generate 16 bytes, then sets the version and variant bits according to RFC 9562. In a standard UUID v4, the third group starts with 4 and the fourth with 8, 9, a or b.
Format example from RFC 9562 (not the current random result):
919108f7-52d1-4320-9bac-f847db4148a8Suitable for test data, configuration examples and record identifiers. Random collisions are very unlikely, but absolute uniqueness is not guaranteed; systems requiring uniqueness constraints must still check for conflicts. Do not use UUIDs as passwords, keys or access credentials. Some systems may not accept the compact format.
After generation, select the results directly, copy the batch or download TXT. If copying fails, select and copy manually or use download. Reset restores defaults and clears page results; it does not revoke content already copied or downloaded.