Why remove blank pages from a PDF?
Blank pages creep into PDFs in dozens of ways. Duplex scanners pick up the empty back of every single-sided document. Print drivers add a trailing page when a print job ends mid-page. Office mail-merge templates leave a stray empty page when a record has no body. Book and report PDFs include separator pages between chapters that you may not want in a digital version. The cumulative effect is bloated page counts, larger file sizes, slower printing, and a less professional-looking document.
PdfDocShift's remove blank pages PDF tool fixes all of these in seconds. Upload your file, pick a sensitivity preset, review the preview, and download the cleaned result. No installation, no Adobe Acrobat subscription, no command-line tools — just a browser.
How blank detection works
Every PDF page is rendered to a low-resolution greyscale image in your browser using pdf.js. The tool then counts how many pixels are darker than a threshold (240/255) — these are treated as "ink". The total ink ratio is compared against the threshold defined by your chosen sensitivity. Pages below the threshold are flagged as candidates for removal.
Three presets cover the common cases:
- Strict (≤ 0.05% ink): only fully empty pages are removed. Safest setting — even a single page number or footer will keep a page.
- Normal (≤ 0.5% ink, default): catches pages with stray scan dots, dust marks, or single tiny artefacts. Recommended for most scanned documents.
- Aggressive (≤ 2% ink): also removes pages whose only content is a light watermark, a faint page number, or a single header line. Review the preview carefully — real content can be flagged at this level.
Delete empty pages from scanned PDFs
This tool was built primarily for scanned documents, where blank pages are the rule rather than the exception. Because detection is pixel-based and not text-based, it works on scans that have never been OCR'd, scans where OCR returns garbage, and scans with very faded ink. Each page is judged on its visual content alone, so the result matches what a human would intuitively call "blank".
If you'd like the surviving pages to also be searchable, run them through OCR PDF after cleaning. If you want to combine cleaning with a smaller file size, pair this tool with Compress PDF.
Clean scanned PDF without losing quality
Some online tools that delete pages re-render or re-compress the entire PDF — this can degrade image quality and increase file size. PdfDocShift's blank page remover uses pdf-lib under the hood: it copies the surviving pages losslessly from the source PDF into a new document. Vector graphics, embedded fonts, and high-resolution images remain byte-identical to the original. The only thing that changes is the page count.
When should you use Remove Blank Pages vs. Organize PDF?
Use Remove Blank Pages when you simply want every empty or near-empty page automatically detected and deleted — no manual selection. Use Organize PDF when you need to reorder pages, mix pages from multiple PDFs, or remove specific non-blank pages manually. The two tools complement each other and can be used back to back: clean blanks first, then reorder what remains.