Merge PDF

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

Click to upload or drag and drop

PDF up to 50MB

How to use

1

Upload your PDF files

Click the upload area or drag and drop multiple PDF files.
2

Reorder if needed

Use the up and down arrows to arrange the PDFs in your preferred order.
3

Merge and download

Click Merge PDFs and download the combined document.

Are my files uploaded to a server?

No. All merging happens in your browser using pdf-lib. Your files never leave your device.

Is there a limit on the number of files?

There is no hard limit. You can merge as many PDFs as your browser's memory allows — typically dozens of files totalling several hundred megabytes.

Will the merged PDF preserve bookmarks and links?

Page content, annotations, and form fields are preserved. Bookmarks and cross-document links may not carry over.

Does merging reduce the quality of my PDFs?

No. The pages are copied byte-for-byte into the new document. There is zero quality loss.

Can I rearrange the page order?

Yes. Use the up and down buttons next to each file to change the order before merging. The final PDF will follow your chosen sequence.

What is the maximum file size?

Each individual file can be up to 50 MB. The total combined size depends on your device's available memory.

Merge two or more PDF files into one document without uploading anything

to a server. Drag and drop your files, reorder them, and download the

combined PDF — all processing happens locally in your browser for

maximum privacy and speed.