Random String Generator
Generate random strings with configurable length and character set.
How to Use the Random String Generator
This tool generates random strings with configurable length and character sets. Here's how to use it:
- Set the length — choose how many characters each string should contain, from 1 up to 10,000.
- Pick character sets — check the boxes for uppercase letters, lowercase letters, numbers and special characters. You can combine any of them.
- Add custom characters — optionally type additional characters that should be included in the pool.
- Choose a count — decide how many strings to generate at once, from 1 up to 100.
- Click Generate — your random strings appear instantly in the results box.
- Copy the results — click "Copy All" to copy every generated string to your clipboard, one per line.
Everything runs in your browser — no data is sent to any server.
Frequently Asked Questions
Are the generated strings secure enough for passwords?
This tool uses Math.random(), which produces pseudo-random output suitable for most everyday tasks. For high-security passwords or cryptographic keys, use a tool backed by a cryptographically secure random number generator (CSPRNG).
What special characters are included?
The special characters set includes: !@#$%^&*()-_=+[]{}|;:,.<>?/ — a broad range of symbols commonly accepted by most websites and applications.
Can I use only my own custom characters?
Yes. Uncheck all four character set checkboxes and type only the characters you want in the custom characters field. The generator will use exclusively those characters.
What is the maximum string length I can generate?
You can generate strings up to 10,000 characters long. This covers most practical use cases while keeping the tool responsive in the browser.
How many strings can I generate at once?
You can generate up to 100 strings in a single batch. Click "Copy All" to copy them all to your clipboard separated by newlines.
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