Random String Generator
Generate random strings for tokens, IDs, test data, and one-time codes. Choose length, count, and character sets (including URL-safe).
For query params and URLs, prefer the URL-safe preset.
Uniqueness is not guaranteed. Best-effort works well for small counts.
Privacy: All generation happens locally in your browser using cryptographically secure randomness when available.
How it works
- Select a character set (preset or custom).
- Set length and count.
- The generator draws random indices from the character set and builds each string.
Examples
- URL-safe, length 32 → tokens for links and query params
- Hex, length 24 → IDs similar to some database object IDs
- Digits, length 6 → one-time codes (not SMS delivery)
When to use this tool
This tool is designed for quick, practical tasks such as everyday calculations, data formatting, or simple conversions. It is best used when you need fast results without installing software or using complex tools.
When to use
- Quick checks or one-time calculations
- Validating or converting data before using it elsewhere
- Simple tasks that do not require advanced software
When not to use
- Critical financial, legal, or medical decisions
- Large-scale or automated processing
- Situations requiring guaranteed precision beyond basic validation
Always review results before using them in important contexts.
About this tool
This tool helps you perform quick utility operations directly in your browser. It runs entirely in your browser without sending data to a server.
You can use this tool when handling simple tasks without installing additional software. The results should be interpreted as a processed output based on your input data.
FAQ
- Is this random string generator secure?
It uses your browser’s cryptographically secure random number generator (crypto.getRandomValues) when available, which is suitable for tokens and identifiers.
- What is the difference between a random string and a password?
A random string is a general-purpose token/identifier. A password generator often adds UX like guaranteed character inclusion and may target human entry. Both can be strong if long and random.
- Can I generate URL-safe strings?
Yes. Use the URL-safe preset (A–Z, a–z, 0–9, - and _).
- Are duplicates possible?
Yes. Randomness means repeats can occur, especially with short lengths or small character sets.
- Is any data stored or sent to a server?
No. Everything runs locally in your browser.