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UUID Generator
Wrap long lines in the input and output
Count
Leave this blank for one UUID, or type a whole number from 1 to 100.
UUIDs
Generate
Leave this blank for one UUID, or type a whole number from 1 to 100.
UUID Generator builds version-4 identifiers from cryptographic random bytes. Type a whole number from 1 to 100. A blank field means one UUID. Each identifier is written on its own line.
The bits are random except for the version nibble, which is 4, and the two variant bits, which are 10. In the usual form the third group starts with 4 and the fourth group starts with 8, 9, a or b. These are not time-based UUIDs, and this page does not store the identifiers it shows.
Uppercase prints A-F. Remove hyphens prints 32 hex digits with no dashes. Changing an option runs again and draws new random bytes in that form. Generation uses crypto.getRandomValues in your browser, and the count you type is never uploaded.
It produces version-4 UUIDs. One hundred twenty-two of the bits come from a cryptographic random source. The version nibble is set to 4 and the variant bits are set to 10, the random form in RFC 4122 and RFC 9562.
Type a whole number from 1 to 100. A blank field means 1. Zero, a decimal, a sign or a word is rejected, and the bad text is selected. The output is one UUID per line.
Uppercase writes A-F instead of a-f. Remove hyphens omits the four dashes, leaving 32 hex digits. Each run draws fresh random bytes, so changing an option generates new identifiers in that form.
No. These are random version-4 UUIDs, not time-based ones, and this page does not store the identifiers it shows.
No. Generation runs in your browser and the count you type is never uploaded or logged. Google Analytics records page views and feature use, never content.
Hash text with SHA, or sign it with HMAC, using WebCrypto.
Generate placeholder words, sentences or paragraphs.
Encode text as a QR code and show it as an image.
Turn text into a valid JSON string literal, or decode one back to plain text.
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