QR code generator
Create free QR codes for links, text, Wi-Fi, email, phone, and SMS. Customize colors and size, then download PNG or SVG. No sign-up, no expiry.
Random string generator
Generate secure random strings, tokens, API keys, hex secrets, PINs, and voucher codes. Pick length and characters; up to 10,000 at once.
How to use Random string generator
Generate random strings for API keys, tokens, secrets, voucher codes, PINs, test data and IDs. Choose the length, how many, and which characters to use — or start from a preset.
- Presets for secure tokens, API keys with a prefix, 64-character hex, base64url secrets, PINs and grouped voucher codes
- Exclude look-alike characters (0/O, 1/l/I) for codes people type
- See the entropy in bits, and generate up to 10,000 strings at once
Strings come from crypto.getRandomValues with unbiased sampling and never leave your browser.
Random string generator FAQs
Is Random string generator free?
Random string generator is a free online tool on ReallyUseful.Tools. No account is required.
Does Random string generator run in my browser?
Random string generator is designed to run in your browser where supported, so files can stay on your device instead of being uploaded to a server.
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