Character Generator: Flexible Random Strings — Tutorial

Generate random strings from rules: uppercase / lowercase / digits / symbols / Chinese, optional fixed prefix or suffix, fixed or variable length. Everything runs locally.

Features

• Mix character types with checkboxes.
• Fixed prefix / suffix, or none.
• Fixed length, or random between min and max.
• Up to 500 lines per run; copy all when done.

Use Cases

• Integration tests: batch IDs or invite codes with a prefix.
• Placeholders and demo form data.
• Casual random samples (use a proper crypto tool for secrets).

How to Use

1. Open Character Generator and click Generation Rules.
2. Prefix/suffix: none, prefix, or suffix, then enter text.
3. Length: fixed, or variable (min/max, 1–100).
4. Quantity: 0–500.
5. Character types: tick at least one → Confirm.
6. Review the list; Regenerate or copy all / per line.

Notes

• Uses crypto.getRandomValues; nothing is uploaded.
• At least one character type is required; Chinese charset excludes spaces.
• Defaults: no affix, fixed length 10, quantity 10, upper/lower/digits/symbols on.

Related Keywords

Character Generator, random strings, chargen, Sanye Hub, Online Tools