CuteTools.
Little helpers for test data

UUID v4 generator

Generate 1–1,000 UUID v4 values using Web Crypto. Copy results or download TXT, CSV and JSON files.

Set up your test data

1–1,000

Processing stays in this browser. Inputs and results are not saved or sent to analytics.

Results

Your results will appear here.

How to use

01

Set up your input

Choose a batch size. Each UUID v4 has 36 characters including hyphens, with random bits from Web Crypto.

02

Review and adjust

Use the main button to see the result. Adjust your input and run it again. Processing stays in this browser.

03

Use the result

Copy the result into your test system. Where download buttons are shown, files are created from the current result in your browser. Inputs and outputs are not saved or uploaded.

Try these examples

Test input handling

Create one UUID for a record identifier field.

Test presentation and integration

Export 1,000 UUIDs as JSON for test fixtures. Uniqueness is probabilistic; a UUID is not a password.

References and limits

RFC 9562 — UUID v4

A little more help

Random name generator

Create Thai or English names with selectable name pools and fields. Copy or download browser-generated test data.

Random test text generator

Generate readable Thai or English placeholder text by character, sentence or paragraph count, including mock articles.

Base64 encoder / decoder

Encode or decode UTF-8 text, including Thai and emoji, with standard Base64 or Base64URL. Process text locally.