PDF to Grayscale PDF

How to Convert a PDF to Grayscale

1. Drop your PDF onto the tool, or click Choose File.
2. Look over the page previews to confirm it is the right document.
3. Set Output Quality and Scale / Resolution. Quality goes from Good (75%) up to Best (100%), and scale from Standard (1x) to Best Quality (3x). The defaults are Best and High Quality (1.5x).
4. Leave Page Orientation on Auto (Original) unless you want pages turned. The two Force options rotate pages that do not match.
5. Click Convert to Grayscale. A preview of the first six pages appears when it finishes.
6. Click Download PDF. The file is saved with grayscale_ added in front of the original name.

Why Use This PDF Grayscale Converter

• Your file stays on your device. The PDF is redrawn by code running in your browser. Nothing is sent to a server.
• Real shades of gray. Each pixel is converted using standard luminance weights, so photos and charts keep their tonal detail instead of turning into harsh black and white.
• Check before you save. The result shows a preview of the first pages, so you can catch a problem before downloading.
• Quality and scale you can tune. Higher settings keep fine print sharp, lower settings give lighter files.

Good to know: every page is rebuilt as an image. Text in the new PDF can no longer be selected or searched, and links and bookmarks are gone, so keep your original for those. The result is gray, not pure black and white. Text-heavy PDFs can come out larger than the original, because crisp text becomes pixels. If size matters, lower the scale or quality, then run the file through Compress PDF.

FAQ

How do I convert a PDF to grayscale?

Drop your PDF onto the tool, keep or adjust the quality and scale, click Convert to Grayscale, then click Download PDF.

Is the result black and white or shades of gray?

Shades of gray. Colors become matching gray tones, and photos keep their detail. It does not apply a hard black and white threshold.

Can I still select the text afterwards?

No. Each page is redrawn as an image, so text in the new file cannot be selected, searched or copied. Keep the original if you need that.

Will a grayscale PDF be smaller?

Not always. Pages become images, so a text-heavy PDF can grow. Lower Output Quality and Scale / Resolution to shrink the file.

Is my PDF uploaded anywhere?

No. The conversion is processed in your browser, so the PDF never leaves your device.

Is there a file size limit?

Your file size limit is shown on this page, and a free account raises it.