PDF to Grayscale
Convert a color PDF to black and white. All processing happens in your browser.
Drop a PDF here or click to upload
PDF files only
What Is PDF to Grayscale?
PDF to Grayscale converts a color PDF into a black-and-white document by rendering each page onto a Canvas element and applying a grayscale filter, then reassembling the pages into a new PDF. All processing happens locally in your browser — no server upload required.
How to Use
- Upload a PDF by clicking the drop zone or dragging a file onto it.
- Choose the output scale (1x–2x) for image quality.
- Click "Convert to Grayscale" to process all pages.
- The grayscale PDF will download automatically.
Features
- Converts every page to grayscale using Canvas rendering
- Adjustable scale for output quality
- Progress indicator for multi-page PDFs
- 100% client-side — your PDF never leaves your device
- Output is a standard PDF with embedded grayscale images
FAQ
Will the text remain selectable?
No. This tool renders each page as an image, so the output PDF contains images rather than selectable text.
Is my PDF uploaded to a server?
No. All processing is done entirely in your browser using PDF.js and pdf-lib. Your file never leaves your device.
Why use a higher scale?
A higher scale renders pages at a larger resolution, producing sharper output — useful for printing. It also increases processing time and file size.