Grayscale PDF
Convert a color PDF to black & white to save ink.
How to use Grayscale PDF
Convert a color PDF to grayscale to save ink or meet submission rules.
- Select a PDF.
- Choose the quality.
- Press Convert to grayscale.
Options explained
- Quality
- Higher quality = sharper pages and larger file.
Tips for best results
- Pages are re-rendered as images. Run OCR PDF afterwards if you need selectable text.
Questions
Why is the text not selectable anymore?
Grayscale conversion renders each page to an image. Use OCR PDF on the result to restore searchable text.
Is Osd-Scan really free?
Yes. Every web tool is free with no sign-up, no watermark and no daily limit. The website is supported by ads. A paid desktop app for Windows (one-time purchase, no ads) is coming soon.
Are my files uploaded to a server?
No. All processing happens inside your browser on your own device. Your documents never leave your computer or phone, so nobody — including us — can see them. You can even disconnect from the internet after the page loads.
Which browsers are supported?
Current versions of Chrome, Edge, Firefox, Safari and Samsung Internet on Windows, macOS, Linux, Android and iPhone/iPad. For the camera scanner on a phone the page must be opened over https.