Criply

UUID Generator

Generate UUID v4, v7, and ULID identifiers instantly.

No signup requiredAlways free to use256-bit secureNever leaves your device

Generated UUID v4

51e3fc4c-83f6-41c5-ad98-dcb2313eb989

Press Space to regenerate

Bulk generation

UUID v4 anatomy

xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx
xxxxxxxx32 random bits (time_low in legacy naming)
xxxx16 random bits (time_mid)
4xxx4 = version number, xxx = 12 random bits
yxxxy = variant bits (8, 9, a, or b), xxx = 12 random bits
xxxxxxxxxxxx48 random bits (node — fully random in v4)

How it works

1. Upload

Select or drag your file onto the upload area.

2. Process

Your file is processed instantly — nothing is stored.

3. Download

Download your result with one click. Done.

Why Criply

Private by default

Client-side tools never upload your files. Server-side tools delete them immediately after processing.

No account needed

Just upload and go. No email, no password, no account — ever.

Works on any device

Fully browser-based. Works on desktop, tablet, and mobile with nothing to install.

Frequently asked questions

UUID (Universally Unique Identifier) is a 128-bit label used to identify information in computer systems. It is represented as 32 hexadecimal digits in the format xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx. UUID v4 is the most common type — fully randomly generated.

Related tools

Random Number Generator

Generate random numbers and dice rolls

Password Generator

Generate secure passwords

Hash Generator

Generate SHA-256, MD5 hashes

Base64 Encoder/Decoder

Encode and decode Base64

Generate cryptographically random UUID v4, time-ordered UUID v7, and ULID identifiers. Bulk-generate up to 100 at a time, copy all, or download as a .txt file. Uses crypto.randomUUID() and crypto.getRandomValues() — never Math.random(). Free, no signup, everything runs in your browser.