Grayscale PDF

Convert a color PDF to grayscale for black and white printing and filing.

Whole file or just some pages
No watermark on downloads

or drop your file here

Smart Grayscale Control

Make the whole document gray, chosen pages, or only its text or pictures.

Grayscale on Any Device

Works in any browser on Mac, Windows, Linux, iPhone and Android.

Preview a B&W Print First

See how a color file reads on a black-and-white printer before you print.

Three Steps to a Black and White PDF

Convert a PDF to grayscale in three steps, no software, no account needed.

Upload your PDF
Drag and drop or select your color document up to 600MB on the free plan and 5GB on paid.
Choose what turns gray
Convert everything, or only text or pictures, and type pages like 2-5 to keep others in color.
Download the Result
Your newly optimized grayscale PDF is ready to download immediately and auto-deleted after 15 min.

Got a stack of PDFs? Turn them all gray in a workflow

Save Ink and Standardize Your Documents.

Color files are expensive to print and often large in size. Here is why converting to black and white makes your files more efficient.

Save Expensive Printer Ink

Convert a color PDF to grayscale for printing without color ink. Review the result to make sure charts and labels are still readable.

Prepare Grayscale Copies

Prepare a grayscale copy when color is not needed. Check the resulting file size and use Compress PDF if you also need a smaller download.

Standardize Legal Filings

Create a grayscale copy when a recipient requests it. Review colored text, logos, and charts to make sure the converted document is readable.

Targeted Image Grayscale

Turn distracting background images to black and white, while keeping your charts, highlights, or colored text in full color.

Archive and Fax

Prepare a grayscale copy for an archive or fax workflow that requests one. Check the recipient's format requirements before sending the file.

Print Clean Drafts

Architects and designers need cheap test prints of blueprints. Grayscale your images to print drafts without wasting resources.

How grayscale conversion works

Color in a PDF is stored per element, text, vector graphics and images each carry their own color data. FynePDF converts that data to shades of gray using luminance weighting, which keeps light and dark relationships looking natural rather than washing everything to the same mid-tone.

Whole document

Text, graphics and images all convert to gray. The standard choice for printing and archiving.

Pages or parts

Gray only pages like 2-5, or only the text or the pictures, and the rest keeps its color.

Smaller files

Removing color data typically reduces file size, with image-heavy documents shrinking most.

After converting to grayscale

Compress PDF

Grayscale shrinks files; compression shrinks them further.

Crop PDF

Trim margins to save more paper when printing.

N-Up & Impose

Fit several pages per sheet for cheaper drafts.

Frequently Asked Questions

Will converting to grayscale reduce file size?

Yes. Removing color information typically reduces file size by 10–30%, depending on how much color the original contains, image-heavy documents shrink most, while text-only files change little. The conversion uses luminance-weighted grayscale, so lighter and darker areas keep their natural relationship instead of flattening to similar grays. For a bigger reduction, run the result through Compress PDF.

Can I convert only part of the document to grayscale?

Yes. In Make gray, choose Text and drawings to keep photos in color, or Pictures only to keep colored text and charts. Type pages in Pages, like 2-5, 8, and only those turn gray. Pages work with one file; with several, every page converts.

Is the Grayscale tool free to use online?

Yes, FynePDF's Grayscale tool is free with no sign-up required. Free accounts convert files up to 600MB, with 5 tasks and 600MB of processing a day. Professional at $7/month raises this to 5GB with unlimited daily tasks.

Is it safe to use Grayscale on FynePDF? Are my files secure?

File transfers use TLS encryption. Cloud-processed files are automatically deleted within 15 minutes after processing completes, unless you choose to save them to your Library. Documents are not used to train AI models. Read the Privacy Policy for storage and processing details.

Can I use the Grayscale tool on Mac, Windows, or mobile?

Yes. FynePDF's grayscale tool works directly from your browser, so it works on Windows, Mac, Linux, iOS and Android with no installation. Chrome, Firefox, Safari and Edge are all supported.

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

Grayscale keeps the full range of tones between black and white, so photographs and shading still look natural just without color. True black and white, sometimes called monochrome or 1-bit, allows only pure black or pure white, which suits line drawings and text but turns photographs into harsh dot patterns. FynePDF converts to grayscale, which is what almost everyone means when they say "black and white."

Will grayscale make my PDF cheaper to print?

Yes. Color pages typically cost several times more than black and white at a print shop, and color toner is the most expensive consumable in an office printer. Converting a document to grayscale before printing means every page prints from the black cartridge alone. For long documents, combine it with N-Up & Impose to fit several pages per sheet.

Can I convert a grayscale PDF back to color?

No. Color information is discarded during conversion, and it can't be recovered from a grayscale file keep your original if you might need the color version. Nothing is changed on your own device, so you can always re-upload the original.

Does grayscale reduce file size more than compression?

They work differently and stack well. Grayscale removes color data, usually cutting 20–40%. Compress PDF resamples images to a lower resolution and can reduce a file by up to 90%. Converting to grayscale first and then compressing gives the smallest result, which is useful for scanned documents where both color and resolution are more than you need.

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