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PDF Merger

Combine multiple PDF files into one document. Add your PDFs, arrange the order, and download the merged file.

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Drop PDF files here or click to choose
Multiple PDFs
Files are processed entirely in your browser — never uploaded to any server.

How to merge PDF files

Combine several PDFs into a single document. The files are read and joined by your own browser, so nothing is uploaded to a server and the finished PDF never leaves your device.

  1. Open the PDF Merger and add the PDF files you want to combine.
  2. Drag the files into the order you want them to appear in the finished document.
  3. Select Merge & Download. The combined PDF is assembled in your browser and saved to your device.

Common questions

Are my files uploaded to a server?

No. The merge happens in your browser using JavaScript. Your PDFs are never transmitted to Covertora, which is why the tool can be used with documents you would not want to send to a third party.

How many PDFs can I merge at once?

There is no fixed limit. Because the work happens on your own device, the practical ceiling is your computer's available memory rather than a server quota.

Does merging reduce the quality of the pages?

No. Merging copies the existing pages into a new document without re-encoding them, so text stays selectable and images keep their original resolution.