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Merge, split, compress, sign and convert. Everything runs right in your browser – no sign-up, no watermark.

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  • Phone & computer

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Frequently asked questions

Is PDFwerk really free?

Yes. All tools work without an account and without limits. The site is funded by ads.

Are my files uploaded?

No. Processing happens entirely in your browser. Your documents are never sent to a server or stored anywhere.

Does it work on my phone?

Yes, in every current browser on phones, tablets and computers. Very large files are faster on a computer.

How much does compression shrink a PDF?

Scanned documents and image-heavy files often shrink by 50 to 90 %. Pages are re-saved as images, so text can no longer be selected afterwards.

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Merge PDF

Combine several PDFs into one file in the order you choose.

    How to merge PDF files

    1. Choose two or more PDF files or drop them into the box.
    2. Use the arrows to put the files in the order you want.
    3. Click “Merge” and download your new PDF.

    Handy for job applications, invoices or scans that come as separate files. Text, images and page sizes stay exactly as they were, and because everything happens in your browser, confidential documents never land on someone else’s server.

    Frequently asked questions

    How many PDFs can I merge?

    There is no fixed limit. Only your device’s memory sets a ceiling; a few hundred pages are usually no problem.

    Does merging reduce quality?

    No. Pages are copied unchanged and nothing is re-compressed.

    Can I merge PDFs on my phone?

    Yes. PDFwerk works in the browser on iPhone, Android, tablets and computers – no app needed.

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