JSON & data
JSON Formatter & Validator
Format, minify and validate JSON, with clear parse errors.
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UUID Generator
Generate UUIDs, including bulk generation.
Generate random version 4 UUIDs, one per line. Generate up to 100 at a time. Values come from your browser's cryptographic random source.
1 to 100
Choose how many UUIDs you need, then press Generate.
Privacy: this tool runs in your browser. The data you enter is not sent to a server.
How to use UUID Generator
- Enter how many UUIDs you need, from 1 to 100.
- Tick Uppercase if your system needs capital letters.
- Press Generate, then copy or download the list.
Frequently asked questions
- Are these UUIDs unique?
- They are random version 4 UUIDs from your browser's cryptographic random source, so duplicates are practically impossible. The tool does not record what it generates.
- Why is the limit 100?
- It keeps the page fast and the output easy to copy. Generate again for more.
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