Generates UUID v4 random identifiers in standard 36-character string format with an optional compact hex mode (no dashes). Everything runs locally in your browser — nothing is uploaded.
Inspect any string — view character count, byte length, word count, line count, Unicode code points, and non-ASCII character breakdown.
Generate cryptographically secure random tokens in hex, base64, or alphanumeric format. Perfect for API keys, session tokens, and secrets. Everything runs locally in your browser — nothing is uploaded.
Generate random TCP/UDP port numbers from well-known, registered, or dynamic ranges. Useful for network testing, Docker port mapping, and firewall configuration.
Generates cryptographically secure random integers or decimals within a user-defined min-max range with optional repetition filtering. Everything runs locally in your browser — nothing is uploaded.
Generate cryptographically secure random strings with customizable length, count, and character sets (uppercase, lowercase, digits, symbols).
UUID Generator lets you generates UUID v4 random identifiers in standard 36-character string format with an optional compact hex mode (no dashes). Everything runs locally in your browser — nothing is uploaded.. It works on any device with a modern web browser.
Generates UUID v4 random identifiers in standard 36-character string format with an optional compact hex mode (no dashes). Everything runs locally in your browser — nothing is uploaded. It runs entirely in your browser — no software installation or data uploads required.
Paste or type your content directly into the provided text area.
Yes. After the initial page load, UUID Generator runs entirely on your device with no internet connection needed. All processing is done locally.
v4 generates cryptographically random identifiers, so every UUID is unpredictable and virtually guaranteed to be unique. v1 generates time-based UUIDs that encode the current timestamp and your device's MAC-derived node value, which makes them sequential and sortable but reveals when each ID was created. Use v4 for database keys, tokens, and anything security-sensitive; use v1 when you need chronologically sortable identifiers.
Yes, they are RFC 4122 compliant. v4 uses 122 bits of randomness from a cryptographically secure source, so the odds of a collision are astronomically small — roughly 1 in 2^122. Even generating 1 billion UUIDs per second, you would need to run for about 86 years to reach a 50% chance of one duplicate. The tool uses the same industry-standard uuid library that powers millions of databases.
Yes. The 'Include Hyphens' toggle strips the dashes to produce a 32-character compact hex string, useful for filenames, URLs, or systems that reject the standard format. The 'Capitalize (UPPER)' toggle converts all letters to uppercase. Both options regenerate the entire list instantly and work with either UUID version.
Between 1 and 100 per batch. Use the Quantity slider to pick the count, and every change regenerates a fresh list. You can then copy all of them to the clipboard at once or download the full list as a .txt file.
No. Everything runs entirely in your browser using the crypto API — no UUID is ever sent to a server, and no files or data leave your device. You can even use it after disconnecting from the internet once the page has loaded.
Random Token Generator
Generate cryptographically secure random tokens in hex, base64, or alphanumeric format. Perfect for API keys, session tokens, and secrets. Everything runs locally in your browser — nothing is uploaded.
Serial Number Generator
Generate serial numbers with configurable format patterns using X (hex), 9 (digit), and A (alphanumeric) placeholders. Everything runs locally in your browser — nothing is uploaded.