Generate random v4 UUIDs; up to 200 at a time.
UUIDs are used for unique IDs in databases, distributed systems, and test data.
Runs entirely in your browser. Nothing is uploaded or logged.
Developers and QA engineers seeding data or building integrations.
Format, validate, and minify JSON with helpful error messages.
Encode text to Base64, including Unicode text.
Decode Base64 strings back to text, including Base64URL.
URL-encode strings so they are safe as query parameters.
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