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PDFMergely

Grayscale PDF

Convert a PDF to neutral black and white, for cheaper printing and smaller files, privately in your browser.

Files never leave your device · No upload · Free
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How to convert a PDF to grayscale

  1. 1

    Add your PDF

    Drop or select the PDF you want to convert. Nothing is uploaded.

  2. 2

    Pick a resolution

    Balanced for everyday use, or high for sharper text and lines.

  3. 3

    Convert and download

    Get a grayscale PDF, built on your device.

Why convert to grayscale in your browser?

Whether it is a contract for the printer or a scan you want neutral, converting locally keeps the document on your device instead of uploading it to an online converter.

Frequently asked questions

Will the text stay selectable?+

No. Forcing a whole PDF to grayscale converts pages to images, so text becomes part of the picture. Use a higher DPI to keep it crisp.

Is my file uploaded?+

No. The conversion runs in your browser, so your PDF never leaves your device.

Why convert to grayscale?+

Grayscale documents are cheaper to print, often smaller, and avoid color-mismatch surprises.

Does it work offline?+

Yes. After the first visit it keeps working with no connection, because all processing is local.

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