Question 1

How does PDF merging work?

Accepted Answer

Drop multiple PDF files, reorder them with the arrows, and click Merge. All pages from each PDF are combined into a single document in the order shown. Download the merged PDF instantly.

Question 2

How do I split a PDF?

Accepted Answer

Drop a PDF and enter the page ranges you want. For example, '1-3, 5, 7-9' creates three separate PDFs: pages 1-3, page 5 alone, and pages 7-9. A single range downloads as one PDF; multiple ranges are bundled in a ZIP.

Question 3

Are my files uploaded to a server?

Accepted Answer

No. All processing happens entirely in your browser using pdf-lib. Your files never leave your device, ensuring complete privacy.

Question 4

Is there a file size limit?

Accepted Answer

We recommend files under 100MB. Larger files may slow your browser depending on your device's available memory, but there is no server-side limit since processing is local.

Question 5

Are encrypted or password-protected PDFs supported?

Accepted Answer

No. PDFs with password protection or DRM cannot be processed. Please remove the password using your PDF reader's settings first, then come back to merge or split.

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