Is there a limit to the number of files?

No, since it runs client-side, the only limit is your browser's memory capacity.

Can I rearrange the pages or files before merging them?

Yes, absolutely. Once you upload your PDF files, you can drag and drop the files in the list to rearrange the merge order before compiling the final document.

Are my uploaded documents combined on a remote cloud server?

No. The merging process is done completely offline in your web browser. The files are combined in-memory on your local device, ensuring your sensitive data never leaves your computer.

Can I merge password-protected or encrypted PDFs?

No. If any of the PDFs are encrypted, you must decrypt them first using our PDF Unlock tool before attempting to merge them.

Will merging PDFs of different page sizes cause formatting issues?

Our client-side merging engine preserves the original page dimensions (e.g. portrait, landscape, A4, or Letter) of each individual sheet in the compiled PDF.

Does merging files increase the overall file size unnecessarily?

No. The tool combines the document streams directly. If you find the merged PDF is too large, you can compress the final merged output using our PDF Compressor.

Files never leave your device. Processing happens locally in your browser.

Browser Native

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Local Processing Active

Merge PDF

Combine multiple PDF documents into a single unified file.

Drag & drop your PDFs here

or click to browse from your device

PDF files only

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100% Client-Side

Your document stays in-memory. Zero server uploads. Unlike cloud-based PDF tools, all conversion, compression, and visual editing happens directly within your web browser. No document files are uploaded to any server. This guarantees that your sensitive information remains completely private.

How to use this tool

1
Select and upload two or more PDF files.
2
Drag and drop the rows to organize the document sequence.
3
Click 'Merge PDFs' to download the merged output.

Frequently Asked Questions

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