Skip to content
Toolshed

Convert PDF to Grayscale

Turn a color PDF into grayscale or black and white for cheaper printing, at 150 or 300 DPI. Free, runs in your browser, nothing uploaded.

  • No uploads
  • No limits
  • No signup

Drop a PDF to convert to grayscale

or click to browse · paste works too

Input:
PDF
Output:
Grayscale PDF
Runs on:
Your device
Size limit:
None
Account:
Not needed

How to use Convert PDF to Grayscale

  1. Add your PDF

    Drop it in or click to browse. It's opened in your browser, not uploaded.

  2. Pick the look

    Choose grayscale for photos and charts or black & white for crisp text, and 150 or 300 DPI.

  3. Convert and download

    Press “Convert to grayscale”, follow the progress page by page, then save the grey copy.

Why Convert PDF to Grayscale on Toolshed

  • No uploads

    Everything runs in this browser tab. Your files never leave your device.

  • No limits

    No file-size caps, no daily quotas. Process as much as your device can handle.

  • No signup

    No account, no email, no watermark.

Frequently asked questions

How is the PDF converted to grayscale?

Each page is rendered as an image at the resolution you pick, its colours are turned into grey by how bright they look, and the pages are put back into a new PDF of the same page size. This works on every PDF, whatever fonts or colour spaces it uses.

Will the text still be selectable?

No. Because the pages become images, text can no longer be selected, searched or copied. For printing or sharing that's fine; keep the original for editing.

What's the difference between grayscale and black & white?

Grayscale keeps every shade, so photos and charts still read well. Black & white turns each pixel pure black or white: smallest and sharpest for text documents, but photos lose detail.

Is my PDF uploaded?

No. The conversion runs in your browser on your device and the file never leaves it.

Are my files uploaded anywhere?

No. Convert PDF to Grayscale runs entirely in your browser. Your files are processed on your device and are never sent to a server.

Is there a file size limit?

No fixed limit. The only limit is your device's memory. Very large files work best in a desktop browser.