Combine multiple PDF files into one, right in your browser.

Drop your PDFs here
or use Select Files above — up to 20 PDFs, 25MB each
Merging… 0 / 0
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Merged PDF Ready

Everything is processed locally in your browser. Your PDFs are never uploaded.

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How to Merge PDF Files

Upload two or more PDF files, use the up/down arrows to set the order they should appear in, then click Merge PDFs. All pages from every file are combined into a single PDF in your chosen order, ready to download.

Is there a limit on how many files I can merge?

You can merge up to 20 PDF files at once, each up to 25MB.

Is my PDF uploaded anywhere?

No. Merging happens entirely in your browser using the pdf-lib library. Your files are never uploaded to any server.

Frequently Asked Questions

You can merge up to 20 PDF files at once, each up to 25MB.

Yes. Use the up and down arrows next to each uploaded file to set the exact order they will appear in the final merged PDF.

No. Every page from every file is copied into the merged document exactly as it appeared in the original, including all text, images, and formatting.

Yes, click the preview (eye) icon on any uploaded file to view it before merging, which is useful for confirming the files are in the correct order.

Password-protected or encrypted PDFs cannot be merged. Please remove the password first using a PDF unlock tool, then upload it here.

No. Merging happens entirely in your browser using the pdf-lib library. Your files are never uploaded to any server.

Yes, once the merge is complete, click Preview to view the combined PDF in your browser before downloading it.

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