How many files can I merge?

Processing happens in browser memory, so dozens of files are supported. Very large files may vary in speed depending on your browser.

How do I change the file order?

Use the ↑↓ buttons in the file list to reorder.

Can I merge password-protected PDFs?

Password-protected PDFs are not currently supported. Please remove the password first.

Will merging reduce the quality of my PDFs?

No. Pages are copied as-is, so there is no quality loss during merging.

Are bookmarks and annotations preserved?

Bookmarks and annotations are not currently preserved. Page content (text, images) is fully retained.

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Document

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Drag PDF files here

PDF files supported · multiple allowed

PDF Merge Features

Combine multiple PDF files into one document. Freely reorder files and process everything in the browser. No file size limits — fast and private.

How to use

① Drag PDF files or click to select. ② Adjust the order in the file list. ③ Click 'Merge PDFs'. ④ Download the merged PDF.

Use cases

• Combine separate report or contract pages • Merge scanned multi-page documents • Consolidate presentation materials • Process confidential documents without server upload

Frequently Asked Questions

Q. How many files can I merge?: A. Processing happens in browser memory, so dozens of files are supported. Very large files may vary in speed depending on your browser.
Q. How do I change the file order?: A. Use the ↑↓ buttons in the file list to reorder.
Q. Can I merge password-protected PDFs?: A. Password-protected PDFs are not currently supported. Please remove the password first.
Q. Will merging reduce the quality of my PDFs?: A. No. Pages are copied as-is, so there is no quality loss during merging.
Q. Are bookmarks and annotations preserved?: A. Bookmarks and annotations are not currently preserved. Page content (text, images) is fully retained.