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Generate cryptographically secure UUID v4 identifiers in bulk. Multiple formats, one-click copy.
Format
Format, validate, and minify JSON with syntax highlighting and error detection
Decode and inspect JSON Web Token headers, payloads, and expiry claims
Encode text or files to Base64 and decode Base64 strings back to plain text
Convert Unix timestamps to human-readable dates and vice versa, in any timezone
Set the count
Drag the slider to choose how many UUIDs to generate (1–50).
Choose a format
Select Standard (with dashes), No dashes, UPPERCASE, or Braces format.
Click Generate
All UUIDs are generated instantly using the browser's cryptographically secure random number generator.
Copy individual UUIDs
Click the copy button next to any UUID to copy it.
Copy all at once
Click 'Copy all' to copy every UUID as a newline-separated list.