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Generate UUID v4 (random) or v7 (timestamp-based) identifiers, single or in bulk.
DeveloperClick the 'Generate' button to create a new UUID v4.
Generate multiple UUIDs at once by specifying the quantity.
Copy a single UUID or copy all generated UUIDs to clipboard.
Use the generated UUIDs as primary keys, session IDs, or correlation IDs.
Use UUIDs as primary keys in distributed databases to avoid ID collisions across multiple servers or shards.
Generate unique IDs for test fixtures, mock API responses, or database seeding scripts.
Name uploaded files with UUIDs to prevent filename collisions on storage services like S3 or Google Cloud Storage.
Use a UUID as an idempotency key when making payment or write API calls to prevent duplicate operations.
UUID Generator creates cryptographically random UUID v4 identifiers instantly in your browser — ideal for generating unique IDs for databases, APIs, and distributed systems without any backend.
Convert JSON arrays to CSV format instantly — paste JSON, download CSV.
Format, validate, and minify JSON instantly with adjustable indentation.
Encode or decode Base64 strings — runs entirely in your browser.
Safely encode or decode URL components for query strings and paths.
Convert between YAML and JSON formats with validation and formatting.
Test regular expressions live against sample text with match highlighting and capture groups.