2026-08-31
UUID generators are simple by nature, so what actually differentiates them is speed to copy, bulk generation, and whether they support both the random (v4) and time-based (v1) formats.
| Tool | v4 (random) | v1 (time-based) | Bulk generation | Copy-to-clipboard |
|---|---|---|---|---|
| iLoveDevTools | Yes | Yes | Yes | Yes, per-item |
| Typical single-purpose UUID sites | Yes | Sometimes | Sometimes | Usually |
The UUID Generator supports both v4 (the common random UUID used almost everywhere) and a hand-rolled v1 (time-based) implementation, generates multiple at once, and lets you copy any individual ID with one click — useful when you need to seed test data or fill out a handful of fixture IDs quickly.
Plenty of single-page sites do nothing but generate one v4 UUID on load. Fine for a one-off, but slower if you need several, and many don't offer v1 at all.
For a single quick UUID, any generator works. For bulk generation or when you specifically need a time-ordered v1 ID, iLoveDevTools covers both cases in the same tool you're probably already using for JSON or JWT work.