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Remove Blank PDF Pages

Finds the blank pages in a scanned PDF by how much ink each page has and by written marks. Pages with text or marks are never judged blank. Check the result before removing anything; the PDF is processed in your browser.

On-device・No uploadMobile friendlyWorks offline

Your files and input are processed only inside your browser on this device and are never uploaded to our servers.

Drop a file here

or

PDFs are processed in this browser on your device and never uploaded.Accepts: PDFUp to 300 MB per filePaste (Ctrl+V) also works

How to use

  1. scan.pdf5 pages, one blank

    Add a PDF

  2. scan.pdfOne blank page

    Find the blank page and remove it

  3. scan (no blanks).pdf5 → 4 pages

    Build the PDF without the blanks

Find the pages judged blank, select them, and rebuild the PDF without them

  1. Drop a PDF or click “Choose files”. Try “Use sample” to see how it works.

  2. Pages judged blank are labelled “Judged blank” and their thumbnails are faded.

  3. Adjust the sensitivity to change the result. Nothing is selected at first: click “Select the pages judged blank”. To change a page, click it to switch between “remove” and “keep”.

  4. Click “Create PDF without blank pages” or “Save only the blank pages as PDF”, then download.

What it does

Pages with text or writing are never blank

A page with a text layer, or with a written mark of 1.5 mm or more (a letter, a page number, a pencil line), is never judged blank, even when its ink is faint. Small dust alone is not counted as a mark.

Tolerates dust and show-through

Blankness is measured against the page’s own background (median brightness). A slightly grey sheet is still blank if it has few dark specks or lines.

Ignores the page edges

The outer 3% of each page (scanner shadows, punch marks) is left out of the judgement.

Check before you save

Nothing is removed automatically. Review the blank pages on screen, switch individual pages, then save.

Save the blank pages separately

Extract only the pages to be removed as their own PDF, for checking or records.

Use cases

  • Remove the blank back sides of a duplex scan in one go
  • Clean up a PDF with stray blank pages without checking each page
  • Check a page that looks blank but must be kept before saving

Supported formats

Input

PDF (.pdf)

Output

PDF (.pdf)

Capability matrix

FeatureSupportNotes
Blank page detection by ink shareSupported—
Pages with text or written marks are never judged blankSupported—
Sensitivity and per-page manual switchingSupported—
Save without the blank pages, or only the blank pagesSupported—
Automatic removal without checkingNot supportedResults are shown and checked before saving
OCR-based detectionNot supportedText in scanned images is treated as ink
Pages with only a small number or rule linesPartialPages with text or a written mark of 1.5 mm or more are never judged blank. An image-only page with only smaller marks is judged blank when its ink is below the sensitivity, so check before saving
Password-protected PDFsNot supported—

Limits & notes

  • Also works on phones and tablets, but a PC is more reliable for checking the pages one by one.
  • Up to 300 MB and 2000 pages per file.
  • Each page is judged from an image about 850 pixels on its longest side. Ink share is counted in pixels; the size of a mark is measured on paper in mm.
  • No OCR. Whether a page has text is judged from the PDF’s text layer.
  • Removed pages are not in the saved PDF. Bookmarks and form fields may be lost in the saved PDF.

Privacy & safety

Judging, removing and saving all happen in your browser; your PDF is never sent to a server.

FAQ

Are blank pages removed automatically?
No. Only the pages you select with “Select the pages judged blank” are taken out when you save. You can check the selection on screen before saving, and switch any page.
Why is a page not judged blank?
A page with text, or with a written mark of 1.5 mm or more, is never judged blank. A page with more ink than the sensitivity is not blank either. Raise the sensitivity to catch faint dust.
How do I choose the sensitivity?
Start with the default (0.05%). Raise it if blank pages remain, and lower it if too many pages are judged blank. You can check each page’s result.
Can I remove the blank back sides of a duplex scan at once?
Yes. Click “Select the pages judged blank”, then “Create PDF without blank pages” to save them all at once.
Can I extract only the blank pages into a separate PDF?
Yes. Click “Save only the blank pages as PDF” to get a PDF of just the pages marked for removal.
Is my PDF uploaded?
No. Judging and saving both happen in your browser; the PDF is never sent to a server.

Organize PDF Pages

Drag thumbnails to reorder pages, and rotate, delete, duplicate or insert blank pages — all visually. Your PDF is processed on your device and never uploaded.

No upload

Phone Photo to Scan PDF

Take a photo of a page or pick one. The corners are found automatically, the page is flattened to a straight-on view, shadows are removed, and pages are combined into one PDF. Photos never leave your device.

No upload

Split PDF

Pick pages from thumbnails to extract them, or split a PDF by ranges, every N pages or into single pages. Your PDF is processed on your device and never uploaded.

No upload

Images to PDF

Drop images, put them in order and get one PDF. Choose page size, orientation and margins; phone photos are rotated correctly. Images are converted on your device and never uploaded.

No upload

Compress PDF

Drop a PDF to cut its size. Only photos and scans are recompressed, so text and graphics stay crisp. Your PDF is processed on your device and never uploaded.

No upload

PDF Editor

Lay text (Japanese included), shapes, arrows, a highlighter, freehand drawing and images on top of a PDF, and fill in its form fields. Text, shapes, highlights and freehand strokes are written as PDF vectors and real text, never as pictures; an added image is embedded as an image. Rewriting the original text and true redaction are not possible.

No upload

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