UUID Generator
Generate random UUID v4 identifiers using browser cryptography. Free, with no signup or usage-count limits.
Free · No signup · No watermark · On-device processing
Use the tool
How to use UUID Generator
- Choose how many UUIDs to generate in this batch.
- Run the generator to create random version-4 identifiers.
- Copy the newline-separated IDs or download the text file.
Understand the input and output
Each UUID contains random bytes with the version and variant bits set to the UUID v4 layout. Generate a batch and copy or download one identifier per line.
Random collisions are extremely unlikely but not impossible. These identifiers are not passwords or proof of identity.
Privacy and browser support
Your input is handled in this browser tab. Selected files and entered text are not sent to Varento Tools by this tool. Some specialized libraries load only when needed. A browser with JavaScript and sufficient device memory is required. Read our local-processing explanation.
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Frequently asked questions
Is this tool free without daily usage limits?
Yes. Varento Tools has no signup, accounts, usage-count caps, paywalls or watermarks. Device memory, format support and browser restrictions can still limit technically demanding files.
Are generated UUIDs sequential?
No. UUID v4 values are random and do not encode a creation time. Use a separate timestamp when your records need an ordering field.
Is my input uploaded?
No. This tool processes your input in the current browser tab and does not send it to a processing server.
What are the practical limits?
Random collisions are extremely unlikely but not impossible. These identifiers are not passwords or proof of identity.