Convert PDF Pages to Grayscale

Make a colour PDF black and white for printing or an upload that asks for grayscale. Your text stays real text, so it can still be searched and copied.

How to make a PDF black and white

  1. 1

    Choose your PDF

    Pick the file. It opens for the current task and is not retained by PilotPDF.

  2. 2

    Pick how to convert

    "Keep the text" is best for most files. Choose "Pages as images" only if colour must be removed from the file itself.

  3. 3

    Download the grey copy

    Check charts and anything colour-coded, then download.

Two ways to make a PDF grey

The recommended way adds a grey "saturation" layer over each page. PDF viewers combine it with the page, keeping how light or dark everything is and dropping the colour. The original text, links and pictures stay in the file, so the copy is still searchable and barely bigger than the original.

Because the original colours are still in the file underneath, a few simple apps and some e-readers that ignore this effect will show colour. When the colour has to be gone from the file itself, for example for a strict upload check, choose "Pages as images": every page is redrawn as a grey picture. The text can then no longer be selected.

When grey causes problems

Colours that are different but equally bright turn into the same grey. Red and green lines on a chart, or a colour-coded map, can become hard to tell apart. Check any page where meaning depends on colour before you send it.

Photos convert well. Light-coloured text, such as pale yellow on white, may become hard to read in grey, so look at headings and highlighted text too.

Your files are never retained by PilotPDF

PilotPDF does not keep copies of your original files, completed files, passwords, or document contents after processing.

Read our privacy policy for details about analytics and data handling.

Frequently Asked Questions

Choose the PDF, leave "Keep the text" selected, and click Convert to Grayscale. Download the grey copy when it is ready.
Yes, with "Keep the text". The pages are only shown in grey; the text itself is untouched. With "Pages as images" the text becomes part of a picture and can no longer be selected.
With "Keep the text", the pages look and print grey in PDF viewers, but the original colours are still stored underneath. A few simple apps and e-readers ignore that effect and show colour. Choose "Pages as images" when the colour must be gone from the file itself.
With "Keep the text", it grows by only a few hundred bytes. "Pages as images" can make a text PDF much bigger and a scanned one smaller.
Yes with "Keep the text": the original PDF is kept and only an effect is added on top. "Pages as images" builds a new file without them.
Not always. Two colours of similar brightness become the same grey, so a red and a green line can look identical. Check charts and maps before you send the file.
Close, but the file itself changes, so it is grey for everyone who opens or prints it, not just one print job.
No. The conversion is completed without PilotPDF retaining the file and the file is never retained by PilotPDF.