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Every PDF tool you need, free and upload-free

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

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  • No watermark
  • 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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Compress PDF

Shrink the file size for email and uploads.

    Pages are re-saved as images. Text can no longer be selected afterwards.

    How to compress a PDF

    1. Choose the PDF file you want to make smaller.
    2. Pick one of four levels – PDFwerk shows you the expected size first. For even smaller files, also choose black & white.
    3. Click “Compress”, compare the sizes and download the file.

    Especially effective for scanned documents and photo-heavy PDFs, which are often too large for email attachments or upload forms. Because you see the expected size of every level up front, you decide the balance between quality and file size.

    Frequently asked questions

    How much does a PDF shrink?

    Scanned documents often shrink by 50 to 90 %. Text-only PDFs shrink less.

    Can I still select the text?

    No. Pages are re-saved as images. If the text must stay searchable, keep the original file.

    Why didn’t my file get smaller?

    Text-only PDFs are often already very compact. Try “Extreme” or black & white – or keep the original if the preview shows no saving.

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