The PDF Remove Blank Pages tool detects and removes blank pages locally in your browser. After uploading a PDF, you can set the page range, detection quality, ink threshold, grayscale threshold, and ignored margin, review the detected pages, then remove blank pages and download a new PDF.
Main Features
- Upload one PDF file and read the total page count.
- Detect all pages or only selected page ranges.
- Choose fast, standard, or precise detection quality.
- Tune blank page detection with ink ratio, grayscale threshold, and ignored margins.
- Review page-level detection details for blank and kept pages.
- Remove detected blank pages and export a new PDF.
- Keep at least one page when all pages are detected as blank.
How to Use
- Choose a PDF from the upload area, or drag a PDF into it.
- Enter a page range if needed; leave it empty to scan all pages.
- Adjust detection quality, blank threshold, grayscale threshold, and ignored margin.
- Start detection and review the blank page and kept page counts.
- Remove blank pages and download the new PDF after confirming the result.
Page Range Format
Page ranges use the original PDF page numbers and support comma-separated values and ranges, such as 1,3-5,8. A reversed range such as 5-3 scans pages 5, 4, and 3. Pages outside the detection range are always kept.
Option Notes
- Blank threshold: a page is blank when its ink ratio is less than or equal to this value.
- Ink grayscale threshold: pixels below this grayscale value count as ink.
- Ignored margin: page edges are ignored before detection to reduce scan border noise.
- Detection quality: higher values are more detailed but slower.
Notes
- Encrypted PDFs may need to be decrypted before processing.
- Detection depends on browser rendering, so shadows, borders, headers, or footers can affect the result.
- Files are processed in the browser, and the current file and result are not kept after refreshing the page.