MERGE PDF FILES

Combine multiple PDF documents into one. Reorder files, preview thumbnails, and download the merged result. 100% in your browser.

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DROP YOUR PDFS HERE

Or click to browse • PDF files only

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OUTPUT FILENAME

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100% CLIENT-SIDE

PDFs never leave your browser

HOW IT WORKS

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UPLOAD PDFS

Drop or select the PDF files you want to merge. Add as many as you need.

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REORDER FILES

Use the arrow buttons to arrange your PDFs in the exact order you want.

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DOWNLOAD MERGED

Click merge and download your combined PDF. All pages preserved perfectly.

WHY USE OUR PDF MERGER?

INSTANT MERGE

LIGHTNING FAST

Your PDFs are merged directly in the browser using pdf-lib. No server uploads, no waiting. Even large documents merge in seconds.

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EASY REORDERING

Move files up or down with arrow buttons. Preview thumbnails to confirm order before merging.

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TOTAL PRIVACY

Files never leave your device. No server processing, no data collection. Completely secure.

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NO LIMITS

Merge as many PDFs as you need. No file count limits, no page restrictions, no watermarks.

EVERYTHING YOU NEED TO KNOW ABOUT MERGING PDFS

Merging PDF files is one of the most common document tasks. Whether you are combining invoices, contracts, reports, or presentations, having a reliable PDF merger saves time and keeps your files organized. Our tool uses pdf-lib, a powerful open-source library, to combine your documents directly in the browser without any server involvement.

Unlike many online PDF mergers that upload sensitive documents to third-party servers, our tool processes everything locally. Your financial documents, legal contracts, and personal files remain completely private. The merged output preserves all original formatting and page sizes from each source PDF.

FREQUENTLY ASKED QUESTIONS

How many PDFs can I merge at once?expand_more

There is no artificial limit on the number of files. You can merge as many PDFs as your device can handle. The only constraint is your browser's available memory. For typical use cases with dozens of files, the merge is nearly instant.

Will the merged PDF preserve the original formatting?expand_more

Yes, absolutely. Our tool copies each page exactly as it appears in the original document. All text, images, layouts, fonts, and even interactive form fields are preserved in the merged output.

Are my PDF files uploaded to a server?expand_more

No. Everything happens locally in your web browser using the pdf-lib JavaScript library. Your files are never sent anywhere. This ensures complete privacy and security for sensitive documents.

Can I reorder the PDFs before merging?expand_more

Yes! Use the up and down arrow buttons next to each file to arrange them in any order. You can also see a thumbnail preview of the first page of each PDF to help you confirm the correct sequence before merging.