Crop PDF Free Online — Trim Margins from PDF | Pixlane

Crop PDF pages online free. Trim top, right, bottom, left margins by percentage, scope by page range. Pure browser processing — no upload, no signup.

PDF cropping is needed when scanned books carry big margins, research papers show running headers that distract, or exports from slide software leave black footer bands that waste ink on print.

How to Use It

1. Upload your PDF and wait for the local preview to load.
2. Adjust the settings — tune the parameters listed on the sidebar for your document.
3. Download the result after the tool renders on your device.

Why People Use Crop PDF

Pixlane writes the PDF crop box — a non-destructive view hint. Adobe Reader and other viewers show only the cropped region, yet the original content is preserved inside the page stream so the crop can be reverted without quality loss.

Formats and Output

Input: PDF. Output: PDF with updated crop boxes across selected pages, reducing visible area while keeping the underlying content intact.

When Crop PDF Is Useful

Use it before sharing a scanned book page for a reading list, before printing papers to save toner on margins, or when prepping screenshot-heavy PDFs for phone reading.

How Crop PDF Works

Each page crop box is recomputed from the configured margin percentages. pdf-lib rewrites the CropBox rectangle so every compliant PDF viewer hides the trimmed edges — cover pages and appendix pages can be excluded with a page range so their layout is preserved.

When to Choose Crop PDF

Choose it when you want a reversible trim that does not throw away text or images, and when the document must stay on your device for privacy.

Common Use Cases

• trimming wide margins from scanned academic PDFs to zoom in on body text
• removing running headers and footer URLs from web-exported slide decks
• cropping phone-captured document photos to focus on the signed area
• preparing single-column reading versions of research papers for mobile

Search Intent and Real-World Value

People typically search for crop PDF online, trim PDF margins, remove PDF white space, and browser-based crop PDF tool. Strong pages for this workflow should explain the problem clearly, show the output style, describe where the tool fits in a real editing or analysis process, and confirm that processing stays private in the browser.

Frequently Asked Questions

What percentage should I use?

Start with 3-5 percent for narrow margin trimming. Go up to 15-20 percent to remove running headers or footer bands from scanned documents.

Does cropping delete the trimmed content?

No. The crop box is a view hint — viewers like Adobe Reader show only the cropped region, but the original page content is preserved. You can uncrop later.

Can I crop only selected pages?

Yes. Use the page range field to scope the crop to specific pages. Leave it empty to crop the entire document.

Is the PDF uploaded to a server?

No. Crop PDF runs entirely in your browser using pdf-lib. The source PDF never leaves your device.

Related Tools

• PDF Watermark — Stamp DRAFT or CONFIDENTIAL watermarks on the cropped output.
• Add Page Numbers — Paginate the cropped PDF so footer numbers land inside the new crop box.
• Unlock PDF — Remove restrictions before cropping a protected PDF you are authorized to edit.
• Rotate PDF — Fix page orientation before cropping so margins are trimmed from the correct sides.
• Split PDF — Split large PDFs before cropping to process chapters independently.
• Extract PDF Pages — Pull out specific pages to crop them in isolation.
• Compress PDF — Reduce PDF size after cropping for smaller files.
• PDF to Image — Render the cropped PDF pages as images for web embedding.

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