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Remove PDF Background

Clean up old or yellowed scans by whitening near-white background pixels. Each page is rasterised and processed pixel-by-pixel: pixels above the threshold brightness are set to pure white, leaving text and dark content sharp. Use the threshold slider to control how aggressively background noise is removed. Great for cleaning up receipts, archival documents, or fax copies.

  • Files never leave your device
  • Runs entirely in your browser
  • Free, no account needed
Use Remove PDF Background - free

Frequently asked questions

Will it remove coloured or dark backgrounds?

The tool targets near-white pixels. For documents with dark or coloured backgrounds, convert to grayscale first using the Grayscale tool, which may bring the background into the near-white range.

How do I choose the right threshold?

Start at around 85% and preview. If background noise remains, increase the threshold. If text starts to disappear, decrease it. The slider lets you find the balance for your specific scan.

Will the output text still be selectable?

Background removal rasterises pages to images for processing, so text in the output will not be selectable. Run OCR afterwards if searchability is needed.

Clean up scan backgrounds and yellowing - free, adjustable threshold.

Open Remove PDF Background
  • Files never leave your device
  • No upload required
  • No account needed
  • Unlimited use, always free

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