Random Generator – Numbers, Strings, Colors

Generate random integers, strings, or colors. Batch generation with visual preview. No-repeat mode. Fisher-Yates shuffle.

Features

🎲

Generate random integers in a custom range, with or without repeats.

🔤

Generate random strings with custom character sets and length.

🎨

Generate random colors with visual swatch preview and HEX/RGB values.

📦

Generate up to 1000 random values at once.

🔄

Ensure all generated values are unique using Fisher-Yates shuffle.

📋

Copy all results or individual values to your clipboard.

Select integers, strings, or colors to generate.

Define range/length, character set (for strings), and quantity.

Click Generate to create random values.

Copy all values or click individual ones to copy.

How are random numbers generated?

Uses crypto.getRandomValues() for cryptographically secure randomness when available, falling back to Math.random() if needed.

What is no-repeat mode?

Instead of independent random picks, no-repeat uses Fisher-Yates shuffle on the full range and takes the first N values. Guarantees no duplicates.

What character sets are available for strings?

Preset sets: letters, uppercase, lowercase, digits, alphanumeric, alphanumeric+special. You can also define a custom character set.

Can I generate multiple colors at once?

Yes. Batch mode generates multiple random colors with visual swatches and HEX/RGB values shown.

Is my data sent to a server?

No. All random generation is done locally using browser APIs. No network requests are made.