Free UUIDTools.com Alternative
UUIDTools.com is a free UUID/GUID generator that offers both a web interface and an API for programmatic access. The service supports UUID v1, v3, v4, and v5, with bulk generation up to 100 UUIDs per request via API. While the API is convenient and free to use, it's rate-limited to 60 requests per minute per IP address, which can be restrictive for high-volume use cases or automated testing. The web interface requires server requests for generation, adding network latency to each UUID created. If you prefer unlimited, instant client-side generation with no rate limits or network dependencies, Fixie's UUID Generator offers a faster, more private alternative that works completely offline.
Try UUID Generator Free →UUID Generator vs UUIDTools.com
| Feature | Fixie UUID Generator | UUIDTools.com |
|---|---|---|
| Price | Free forever | Free |
| Signup Required | No | No |
| Privacy / Data Handling | 100% client-side — zero server requests | Server-side API processing |
| UUID Versions | v1, v4, v5, v7 | v1, v3, v4, v5 |
| Bulk Generation | Up to 1,000 UUIDs instantly | Up to 100 per API request |
| API Access | No API (client-side only) | Yes, free API with no authentication |
| Rate Limits | None (runs in browser) | 60 requests/minute per IP |
| Offline Support | Yes — works after page loads | No — requires internet for API |
| Latency | Instant (no network delay) | Network-dependent (API request latency) |
| Ads | None | Unknown |
Why Choose Fixie?
UUIDTools.com provides a valuable service: a free, no-authentication API for UUID generation that developers can integrate into scripts, tests, or automation workflows. The 60 requests per minute rate limit is generous enough for most use cases, and the ability to generate up to 100 UUIDs per API call adds convenience. If you specifically need server-side UUID generation via HTTP API, UUIDTools.com delivers exactly that functionality for free.
However, for interactive use or high-volume local generation, client-side UUID generation is significantly faster and more efficient. Fixie's UUID Generator runs 100% in your browser — no API calls, no network latency, no rate limits, and no privacy concerns about sending requests to external servers. Generate 1,000 UUIDs in under a second, all locally using crypto.getRandomValues() for cryptographic security.
Fixie also supports v7 UUIDs (time-ordered with Unix timestamp prefix), which are ideal for database primary keys because they're sortable as binary data, improving index performance. UUIDTools.com supports v3 (MD5-based) but not v7. The built-in validator detects UUID version and variant, visual segment coloring makes UUIDs easier to read, and multiple format options (uppercase, braces, URN, no-dash) match your coding style. Everything works offline once the page loads — no internet required after initial page load. If you need server-side API access for programmatic generation, UUIDTools.com is the right tool. If you want unlimited, instant, private client-side generation with modern features, Fixie provides that in a faster, cleaner package.
How to Use UUID Generator
Step 1: Load the UUID Generator
Visit fixie.tools/uuid — works in any browser, no API key or authentication required.
Step 2: Select UUID Version
Choose v1 (time-based with node ID), v4 (random — most common), v5 (SHA-1 namespace-based), or v7 (time-ordered, database-friendly). Each version is clearly labeled with its use case.
Step 3: Generate Instantly
Click "Generate UUID" for a single ID or enter a batch count (1-1,000) to create multiple UUIDs at once. Generation is instant with no network latency — everything runs in your browser.
Step 4: Copy, Download, or Validate
Copy individual UUIDs with one click, download batch results as .txt, or paste any UUID into the validator to check format, version, and variant. Switch output formats anytime (standard, uppercase, no-dash, braces, URN).