UnQTools
File Runs in your browser

Empty File Creator

Generate empty or fixed-size dummy files for testing. Fill patterns (zeros, random, 0xFF, sequential), size presets (1KB / 1MB / 100MB / 1GB), custom extensions, filename templates with numbering, batch creation, and download. 100% client-side.

100% Private Works Offline Instant

Generate empty or fixed-size dummy files for testing. Fill patterns (zeros, random, 0xFF, sequential), size presets (1KB / 1MB / 100MB / 1GB), custom extensions, filename templates with numbering, batch creation, and download. 100% client-side. 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.
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