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PDF Merger MERGE

Combine multiple PDF files into a single document. Select page ranges, rotate pages, and drag to reorder — no upload, no sign-up, completely private.

Drop PDF files here or click to browse
Select multiple PDF files to merge

Sessions

No saved sessions

Merge History

Files

Drop PDF files above to get started.

Frequently Asked Questions

Is my PDF data uploaded to a server?
No. All processing happens locally in your browser. Your PDF files are never sent to or stored on any server.
How many PDF files can I merge?
You can merge as many PDF files as you like. The only limit is your browser's memory, so very large files may take longer to process.
Can I reorder the files before merging?
Yes, simply drag and drop files in the list to reorder them before clicking Merge.
What happens to the file sizes?
The merged PDF size is roughly the sum of all input file sizes. pdf-lib copies pages without recompression, so the total size is comparable to the original files combined.
Does this work on mobile?
Yes, the tool works on all modern browsers including Chrome, Firefox, Safari, and Edge on both desktop and mobile.

How to Use

01

Add PDF Files

Drop PDF files onto the upload area or click to browse and select multiple PDFs from your device.

02

Reorder Files

Drag and drop files in the list to arrange them in the order you want them to appear in the merged document.

03

Merge PDFs

Click the Merge PDFs button to combine all files into a single PDF document. Processing happens entirely in your browser.

04

Download Result

Click Download to save your merged PDF. The original files are not modified.

About the PDF Merger

The PDF Merger lets you combine multiple PDF files into a single document right in your browser. Drag to reorder files, merge them, and download the result — all without uploading anything to any server.

Built with pdf-lib and running entirely client-side, this tool ensures your documents never leave your device. No sign-up required, no data stored, no tracking.

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