UUID Generator
Generate UUID v4 and v7, one at a time or in bulk.
- No uploads
- No limits
- No signup
- Input:
- One click
- Output:
- UUID
- Runs on:
- Your device
- Size limit:
- None
- Account:
- Not needed
How to use UUID Generator
Pick a version
Choose v4 for fully random IDs or v7 for IDs that sort by creation time.
Choose how many and the format
Generate 1 to 1000 at once, then switch uppercase, no-hyphens or braces on and off without regenerating.
Copy or download
Copy the whole list or save it as a .txt file, one UUID per line.
Why UUID Generator on Toolshed
No uploads
Everything runs in this browser tab. Your files never leave your device.
No limits
No file-size caps, no daily quotas. Process as much as your device can handle.
No signup
No account, no email, no watermark.
Frequently asked questions
What is the difference between UUID v4 and v7?
v4 is 122 random bits. v7 (RFC 9562) starts with a millisecond timestamp, so new IDs sort after older ones, which is friendlier to database indexes.
Are these UUIDs generated securely?
Yes. They use your browser's cryptographic random number generator, and nothing is sent to a server.
Are my files uploaded anywhere?
No. UUID Generator runs entirely in your browser. Your files are processed on your device and are never sent to a server.
Is there a file size limit?
No fixed limit. The only limit is your device's memory. Very large files work best in a desktop browser.
Is UUID Generator really free?
Yes. There's no account and no watermark. A short optional ad, or a 20-second wait, unlocks each download. That's how we keep it free.
Does it work offline?
Once the page has loaded, processing happens locally, so it keeps working even if your connection drops.