PDF Merge

When to use?

Use it to combine separate contracts, attachments, or scans into one PDF for submission.

How to use

• Select two or more PDF files.
• Press merge.
• Download the combined PDF.

Input Explanation

Select multiple PDF files. They merge in the order selected in the file picker.

Calculation Basis

It copies pages from each PDF document with pdf-lib and adds them to a new PDF in order.

Usage Examples

• Combine documents - Make several PDFs into one submission file.
• Consolidate scans - Merge files scanned in multiple sessions into one document.
• Make a bundle - Merge separate PDFs like cover, body, and appendix into one collection in order.

Examples

• cover.pdf + report.pdf + appendix.pdf → merged.pdf
• A scanned ID front and back (2 PDFs) → merged into one file

Cautions

• Malformed source data can cause parsing errors or broken output.
• If each PDF has a different layout, size, or orientation, the merged file may have irregular page sizes.

FAQ

Is it uploaded to a server?

No. PDFs are processed in browser memory and not sent to an external server.

How is the merge order decided?

They merge in the order selected. To change the order, reselect in the desired sequence.

Is there a file count or size limit?

No fixed count limit, but all files are processed in browser memory, so many or large files can slow down by device.

Can password-protected PDFs be merged?

Unlock a protected PDF first, then merge it for proper processing.

Related Tools

• PDF Split - Split a PDF by page into individual files for each page.
• PDF Page Extractor - Select only the pages you want and save them as a new PDF.
• PDF Page Remover - Make a new PDF from the remaining pages after excluding selected ones.
• PDF Page Rotator - Rotate wrongly oriented PDF pages by 90, 180, or 270 degrees.
• Image to PDF Converter - Convert JPG/PNG/WebP images into a PDF.
• URL Encode / Decode - Encode text into URL-safe form (%XX) or decode an encoded URL back to text.