Is the PDF Merger free?

Yes — the PDF Merger is completely free, with no account, subscription, signup, or usage limits.

Is my data uploaded or stored?

No. The PDF Merger processes everything locally in your browser. Your input is never uploaded, saved, or shared with any server.

Does the PDF Merger work offline?

Yes. Once the page has finished loading, the PDF Merger works without an internet connection.

Which browsers does the PDF Merger work in?

The PDF Merger works in all modern browsers, including Chrome, Firefox, Safari, and Edge — no plugins or extensions needed.

Does this free PDF merger add a watermark to the output?

No — Acken Tools adds no watermarks, branding, or modifications to your merged PDF. The output contains only the pages from your input files.

Can I merge password-protected PDFs?

Encrypted or password-protected PDFs cannot be processed. The tool will show a "Could not read (may be encrypted)" error for those files. You would need to remove the password protection first.

PDF Merger

Combine multiple PDF files into a single document in your browser.

📎

Drop PDFs here or click to browse

Select multiple PDF files to merge

Free browser-based tool · Runs 100% on your device · Last updated July 7, 2026

What is the PDF Merger?

The free PDF Merger combines multiple PDF files into a single document entirely in your browser — no upload to any server, no account required. Drop or select multiple PDFs into the drop zone, and each file appears in a list showing its name, file size, and page count. Use the ↑ and ↓ arrow buttons to reorder the files to get the exact page sequence you need. A running total shows the combined page count. Click Merge & Download to produce a single merged PDF file instantly.

→ Combining multiple chapters or sections saved as separate PDFs into one document
→ Merging a cover letter and CV into a single PDF for a job application
→ Combining invoices or receipts into one PDF for accounting or expense reports
→ Joining scanned pages saved as individual PDF files into a complete document

How to Use the PDF Merger

1 Drop multiple PDF files onto the drop zone, or click to browse and select them.
2 Each PDF appears in the list showing filename, file size, and page count.
3 Use the ↑ and ↓ buttons to reorder files to your desired page sequence.
4 Click ✕ to remove any file you don't want to include.
5 Check the total page count shown in the list header.
6 Click Merge & Download to save the combined PDF.

Key Features

📎
Merge unlimited PDFs

Add as many PDF files as you need — each one appears in the ordered list.
↕
Drag-to-order with arrows

Use the ↑/↓ buttons to arrange files in any order before merging.
📊
Page count per file

Each listed file shows its individual page count and a running total.
🔒
Free, 100% browser-based

Your PDF files never leave your device — all merging happens locally using pdf-lib.
🆓
No sign-up, no watermark

Completely free to use with no account, no limits, and no watermarks added.

Example Usage

Example Input

Files: chapter-1.pdf (12 pages), chapter-2.pdf (8 pages), chapter-3.pdf (15 pages)

Example Output

merged.pdf — 35 pages

Frequently Asked Questions about the PDF Merger

What is the PDF Merger?: The PDF Merger is a free online tool that lets you combine multiple PDF files into a single document in your browser. It runs entirely in your browser, so there is nothing to install and nothing is uploaded to a server.
Is the PDF Merger free?: Yes — the PDF Merger is completely free, with no account, subscription, signup, or usage limits.
Is my data uploaded or stored?: No. The PDF Merger processes everything locally in your browser. Your input is never uploaded, saved, or shared with any server.
Does the PDF Merger work offline?: Yes. Once the page has finished loading, the PDF Merger works without an internet connection.
Which browsers does the PDF Merger work in?: The PDF Merger works in all modern browsers, including Chrome, Firefox, Safari, and Edge — no plugins or extensions needed.
Does this free PDF merger add a watermark to the output?: No — Acken Tools adds no watermarks, branding, or modifications to your merged PDF. The output contains only the pages from your input files.
Can I merge password-protected PDFs?: Encrypted or password-protected PDFs cannot be processed. The tool will show a "Could not read (may be encrypted)" error for those files. You would need to remove the password protection first.