Skip to content

UUID Generator & Validator

Generate UUID v4 values or validate a UUID string. Bulk generate 1, 10, 50, 100, 500, or 1000 UUIDs. Export as TXT or CSV. All processing runs in your browser.

Generate UUID

Validate UUID

Example

Click Generate 1 to get a single UUID v4 like 550e8400-e29b-41d4-a716-446655440000. Use Validate to check if a string is a valid UUID (format: 8-4-4-4-12 hex digits).

FAQ

No. Generation and validation run entirely in your browser using crypto.randomUUID().
UUID v4 (random). The validator accepts standard UUID format (any version).

Security Tools

JWT Decoder

Decode JWT header and payload, view expiry and validity.

Bcrypt Generator & Verifier

Generate hashes and verify passwords (server-side).

Random String Generator

Generate random strings. Length, uppercase, lowercase, numbers, symbols.

Password Generator

Generate strong passwords. Length, symbols, strength meter.

Hash Generator

MD5, SHA-1, SHA-256, SHA-512 hashes from text.

Unix Permission Calculator

Visual chmod checkboxes to octal and symbolic permissions.

JWT Encoder

Create HS256 JWTs with header, payload, and secret (Web Crypto).

HMAC Generator

Generate HMAC-SHA256 or HMAC-SHA1 with a secret key.