NG.ai

Random ASCII Character Generator

Generate random ASCII characters. Supports printable characters (32-126) or full ASCII range (0-255). Perfect for testing string processing and character encoding. Full range including control characters.

Press to Generate
Embed & Developers
<iframe
  src="https://numbergenerator.ai/random-ascii/?count=10&ascii_count=10&ascii_printable=1"
  title="Random ASCII Character Generator"
  width="100%"
  height="600"
  frameborder="0"
  style="border:1px solid #e5e7eb;border-radius:12px;"
  loading="lazy"
  allow="clipboard-write"
></iframe>

Paste this code into your website to embed the Random ASCII Character Generator tool. The iframe will automatically adapt to mobile screens.

About this tool

This tool uses a cryptographically secure pseudo-random number generator (CSPRNG) to ensure fairness and security.

Tip: press Space to generate again.

About Random ASCII Character Generator

Generate random ASCII characters. Supports printable characters (32-126) or full ASCII range (0-255). Perfect for testing string processing and character encoding. Full range including control characters.

How to Use Random ASCII Character Generator

  1. 1Choose printable or full range
  2. 2Set characters per string
  3. 3Choose how many strings
  4. 4Click 'Generate ASCII'
  5. 5Use for encoding testing

Features

  • Printable/full range
  • Custom string length
  • Batch generation
  • Encoding testing
  • Character validation

Frequently Asked Questions

What's the difference between printable and full ASCII?
Printable ASCII includes characters 32-126 (space, letters, numbers, symbols). Full ASCII includes control characters (0-31, 127, 128-255).
How many characters can I generate per string?
You can generate strings from 1 to 1,000 characters each, with up to 10,000 strings per batch.
What are control characters?
Control characters (0-31, 127) are non-printing codes like tab, newline, and bell. They're used for device control, not display.
Can I use this for password testing?
Yes! Generate random ASCII strings for testing password validation, input sanitization, and character encoding.
What's the extended ASCII range (128-255)?
Extended ASCII includes accented characters, symbols, and box-drawing characters. Different encodings (ISO-8859-1, Windows-1252) assign different meanings.
Are these safe for filenames?
Printable ASCII (excluding special characters like /\:*?"<>|) is safe for filenames. Use the printable range for filename testing.

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Secure & Private

All generation happens locally in your browser using Web Crypto API (CSPRNG). Your data never leaves your device. No tracking, no storage, complete privacy.