◑ Grayscale PDF
Turn a color PDF into grayscale. Great for printing in black and white and for shrinking color-heavy documents.
Drop a file here or click to browse
PDF · processed privately on your device
Grayscale PDF strips the color out of a document, converting every page to clean black and white. It's ideal for cheaper printing and can noticeably shrink color-heavy files. Slate renders and desaturates each page locally, then rebuilds a fresh PDF — no upload required.
How to grayscale pdf
- Drop in a color PDF.
- Click Grayscale PDF — Slate desaturates every page.
- Download your black-and-white PDF.
Frequently asked questions
Why convert a PDF to grayscale?
Grayscale PDFs print cheaply on black-and-white printers and often have a smaller file size than full-color documents.
Does this keep the text selectable?
Grayscale re-renders pages as images, so it's best for printing and sharing. If you need selectable text, keep your original alongside it.
Are my files uploaded to a server?
No. Slate processes your PDF entirely in your browser. Your files never leave your device, which is faster and far more private than typical online tools.
Is Grayscale PDF really free?
Yes. Grayscale PDF is completely free with no signup and no limits. Slate is funded by unobtrusive ads, not subscriptions.