Convert every page of a color PDF to grayscale in your browser, preserving vector layout and size. Good for mono printing and smaller inks.
Every page is rendered to pixels, desaturated with Rec. 709 weights and re-packed.
The grayscale PDF appears here — page size preserved, color gone.
Your file is never sent to a server. It is read and processed by your own browser, and the results are not stored.
A PDF stores color in many shapes: fills, strokes, shadings, images, transparency groups. Rewriting them all reliably in a generic file is a research project. Rasterizing sidesteps that: whatever the page renders to, the grayscale conversion affects exactly what you see.
The trade is the one you make in print anyway — the page becomes pixels, and the output is a picture of the layout, not a layout engine.
Mono laser printing, legal filings that require black and white, accessibility workflows for mono displays, and shrinking color-heavy documents for bandwidth. For document archiving where selectable text matters, keep the vector original and convert only a copy.
No. PDF Grayscale Converter runs in your browser, and the file is read there rather than sent to a server for processing. Our host still sees ordinary page-request metadata, which is described on the privacy page.
Yes, PDF Grayscale Converter is free, with no paid tier, no account, and no watermark added to your output. The limits are technical rather than commercial: file size, page count and supported formats are listed on this page.
PDF Grayscale Converter supports .pdf files up to 100MB directly in your browser.
Yes — the tool renders each page to pixels, desaturates them with Rec. 709 weights, and re-packs them as a new PDF. The result looks identical but it is a raster PDF, not vector content.
No. Page count and physical size are preserved; only the colors change.
Text is rendered into the page image, so the font shapes survive as pixels — exactly what mono printing does to them anyway.
No. Everything happens in this tab; nothing leaves your device.