UnQTools
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Edge-Case / Naughty String Generator

Browse, filter, and export a curated library of 200+ naughty edge-case test strings — the Big List of Naughty Strings plus Unicode, emoji, RTL/bidi overrides, zalgo, SQL injection, XSS payloads, control chars, zero-width, null bytes, boundary values, and more. Categorized, searchable, seed-reproducible random sampling, and one-click export to JSON, CSV, Playwright, Jest, or pytest fixtures. 100% client-side, defensive QA use only.

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Browse, filter, and export a curated library of 200+ naughty edge-case test strings — the Big List of Naughty Strings plus Unicode, emoji, RTL/bidi overrides, zalgo, SQL injection, XSS payloads, control chars, zero-width, null bytes, boundary values, and more. Categorized, searchable, seed-reproducible random sampling, and one-click export to JSON, CSV, Playwright, Jest, or pytest fixtures. 100% client-side, defensive QA use only. Everything runs locally in your browser — your data never leaves your device.

How to use

  1. Enter your input in the tool above.
  2. Adjust any options to your preference.
  3. Use the Copy or Download buttons to save the result.
  4. Everything happens locally — your data never leaves your browser.