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Convert PDF to Grayscale — Free Online Tool
Turn a color PDF into a clean black-and-white version. Every page keeps its original size — ideal for printing, faxing or saving ink.
Pages converted–
Quality–
Page size–
Drop a PDF above, pick a quality, then press Convert to grayscale.
Original page sizes kept
No sign-up needed
Free forever
How it works
1Drop a PDF and choose a quality (200 DPI is the balanced default).
2Press Convert to grayscale — each page is rendered and rebuilt in black-and-white.
3Download the grayscale PDF, ready for printing or sharing.
Frequently asked questions
Does the text stay selectable after conversion?
No — and this is the honest trade-off: each page is rendered as a grayscale image and rebuilt into the PDF, so text can no longer be selected or searched. If you need selectable text, this tool is not the right choice.
Will the file size change?
It usually grows, because pages become images. Lowering the DPI (150) keeps files smaller; 300 DPI gives the sharpest print output.
Is my PDF uploaded anywhere?
No. Rendering (PDF.js) and rebuilding (pdf-lib) happen entirely in your browser — your PDF never leaves this page.
Grayscale rendering via PDF.js + rebuild via pdf-lib · 100% local — your PDF never leaves this page.