Resolution
96, 150 or 200 dpi.
More pixels use more memory and may increase file size.Grayscale PDF
Create a grayscale reading or printing copy of a color PDF. The browser renders each page and converts its colors into shades of gray.
Drop your PDF file here
Choose a file to get started.
Files stay on your device No sign-up Free to use
How it works
Inspect meaningful color differences
Open the color PDF.
Choose rendering detail
Choose a rendering resolution.
Compare legends and small text
Convert and inspect the grayscale copy.
Grayscale PDF
Optimize
Convert colored pages into grayscale images
Make a monochrome reading copy of a brochure
A color brochure will be read on a monochrome display, but its chart uses red and green categories. Start at 150 dpi and compare the legend. If both categories become similar gray, preserve the color file or modify the source chart to use distinct labels and patterns.
✓ Compare legends and highlights against the source. Confirm whether two meaningful colors now look alike, and inspect small text at the target reading size.Make it work for your document
Options after selecting a fileFrequently asked questions
The details, when you need them.
Will the PDF necessarily become smaller?
No. Rendering can increase size, especially for compact text PDFs.
Can I still select the original text?
No. The converted pages are images.
Review diagrams and colored labels
Colors with different meanings can become similar gray tones. Check charts, highlighted passages and color-coded tables before distributing the result. Grayscale conversion changes the visible appearance, but it is not a print production color-management workflow and does not guarantee lower printing costs.
Understand image-based output
Every page is rendered as an image. Original selectable text, links and form controls are lost. Higher resolution improves detail at the expense of memory and file size. Run OCR afterward if the resulting document needs searchable text.
Check the saved result
Compare legends and highlights against the source. Confirm whether two meaningful colors now look alike, and inspect small text at the target reading size.
Rasterization removes selectable text
Pages become JPEG images. Selectable text, links and interactive forms are lost; this is not print color certification.
A chart legend is no longer distinguishable
Different colors can map to similar gray tones. Retain the color original or edit the chart to add labels or patterns before conversion.