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Merge PDF Files — Free

Combine multiple PDFs into a single document, in whatever order you choose. No signup, no watermark, 100% browser-based.

✓ Unlimited Files✓ Reorder Before Merging✓ No Signup✓ Lightweight Library (~90KB)
STEP 1

Upload PDF Files to Merge

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Drag & Drop PDF files here

Select two or more PDFs — they'll be combined in the order shown below

🔒 100% private. Your PDFs are merged directly in your browser using a small open-source library (pdf-lib, ~90KB) — no server upload. Files never leave your device.

How to Merge PDF Files

Whether you're combining scanned tax documents, assembling a job application packet, or joining several reports into one file, merging PDFs eliminates the hassle of sending multiple attachments. This tool combines any number of PDFs into a single document in seconds, with full control over page order.

Common Reasons to Merge PDFs

Job & school applications — combine resume, cover letter, and transcripts into one file.
Tax & legal documents — merge multiple scanned forms into a single submission.
Reports & invoices — join monthly reports or multi-part invoices into one document.

How It Works

1
Upload PDFs — add as many files as you need.
2
Reorder — use the arrows to set the final order.
3
Download — one merged PDF, instantly.

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Frequently Asked Questions

Are my PDFs uploaded to a server?

No. Merging happens entirely in your browser using a small JavaScript library. Your PDF files never leave your device.

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

No hard limit — practical limits depend on your device's memory. Most users can merge dozens of files without issue.

Can I change the order of pages before merging?

Yes — use the up/down arrows next to each file to set the exact order they'll appear in the final PDF.

Will merging affect the quality of my PDFs?

No — pages are copied directly from the source PDFs with no re-rendering, so text, images, and formatting stay exactly as they were.