How do I merge PDF files?

Upload your PDF files, drag to reorder them as needed, then click "Merge All PDFs". Your merged document will be ready for download in seconds.

Is there a limit on the number of files?

You can merge as many PDF files as you need. There is no fixed limit on the number of files or pages.

Will merging reduce PDF quality?

No, merging simply combines the pages without recompression. The quality of your original documents is fully preserved.

Is this PDF merger free?

Yes, completely free with no limits. Merge as many PDF files as you need, no registration required.

Merge PDF Files

Combine multiple PDF files into a single document. Drag to reorder.

或将文件拖放到这里

Maximum file size: 200MB per file

Drag and drop files to reorder before merging

About PDF Merge

Our PDF merge tool combines multiple PDF documents into a single file without losing quality. You can reorder files before merging, and all processing happens entirely in your browser — your documents never leave your device. Perfect for combining reports, contracts, or any multi-part documents.

When to Merge PDF Files

Combine Reports

Merge multiple report sections into one complete document

Contracts & Agreements

Combine contract pages, appendices, and signatures into a single PDF

Print Preparation

Combine files for batch printing without opening each one

Document Archiving

Merge related documents into a single organized PDF archive

Merge PDF Files

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