How many PDFs can I merge at once?

There is no hard limit. You can merge as many PDFs as your device memory allows.

Will the merged PDF lose quality?

No. pdf-lib merges files without re-encoding content. Fonts, images and formatting are preserved exactly.

How do I save my merged PDF to Google Drive?

After merging your files, click the Save to Google Drive button. Authorize PDF Scanner once, and your merged PDF saves directly to your Drive folder.

Is my Google Drive data safe with PDF Scanner?

Yes. PDFScanner.io only requests permission to save files to your Drive. We cannot read or modify your existing files. All processing happens in your browser.

Can I revoke PDF Scanner access to Google Drive?

Yes. Visit myaccount.google.com/permissions, find PDFScanner, and click Remove access.

Merge PDF Online Free – Combine PDF Files Instantly

🛡️Files stay on your device

⚡Instant processing

🚫No watermarks added

📋No sign-up needed

🔗

Drag & Drop PDF Files Here

Drop multiple PDFs to combine them into one file

📂 Select PDF Files

Drag files in the list above to reorder them before merging.

Merging pages…

✅

PDF Merged Successfully!

Your combined PDF is ready to download.

HOW IT WORKS

Merge PDFs in 3 Simple Steps

Upload Your PDFs

Select or drag multiple PDF files. Add as many as you need — there's no limit.

Set the Order

Files will be merged in the order shown. Remove any you don't want included.

Merge & Download

Click Merge PDF. Your combined file downloads instantly to your device.

FAQ

Merge PDF — Frequently Asked Questions

How many PDF files can I merge at once?▼

There is no hard limit imposed by PDFScanner. You can merge as many PDF files as your device's memory can handle. Most modern computers can comfortably merge 50+ PDFs without any issues.

Will merging PDFs reduce their quality?▼

No. pdf-lib merges files by copying page content streams directly without re-encoding any data. Images, fonts, and formatting are preserved exactly as they appear in the original files.