UUID / ULID / NanoID Generator
Generate unique identifiers instantly. Client-side only — nothing leaves your browser.
No sign-up. No tracking. Runs in your browser.
Random, 128-bit, RFC 4122. Most widely used.
Common Use Cases
- Generate UUIDs for database seedsGenerate up to 100 UUID v4 identifiers in one click for use as primary keys in database seed scripts or test fixtures.
- Compare ID formats for a new projectGenerate UUID v4, UUID v7, ULID, and NanoID side-by-side to compare their formats, sortability, and length before choosing an ID strategy for a new service.
Pro plan — coming soon
Save your history, create reusable presets, and share outputs with a link. One plan, all tools.
See what's planned →Frequently Asked Questions
Related Tools
API Request Builder
Build and send HTTP requests from your browser. Set method, headers, and body, then see the full response with status, headers, and body. Server-side proxy avoids CORS restrictions.
Data Format Converter
Convert between JSON, YAML, TOML, CSV, XML, and SQL. Auto-validates input and prettifies with one click.
JSON Schema Generator + Validator
Paste sample JSON to instantly generate a draft-07 JSON Schema. Switch to Validate mode to check any JSON against a schema. Runs entirely in your browser.