PDF Grayscale Converter

Convert a color PDF to grayscale — reduces file size and prepares for B&W printing

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Drop PDF here or click to upload

PDF files only — Max 30MB

PDF

How to Use

Upload PDF

Drop or select your color PDF. The tool renders each page using pdf.js.

Choose Quality

Select the output quality/resolution. Higher quality = larger file but sharper text.

Download

Click Convert and download the grayscale PDF. 100% browser-based, no upload.

FAQ

Is my PDF uploaded to a server? ▾

No. Processing is 100% in your browser using pdf.js and pdf-lib.js. Your file never leaves your device.

Why is the output file larger? ▾

This tool re-renders each page as an image and embeds it in a new PDF, which can increase file size compared to the original. Use a lower quality setting to reduce the output size.

Will text still be selectable in the output? ▾

Since each page is rasterized (converted to an image), text will not be selectable in the output PDF. This is a limitation of browser-based grayscale conversion without an AI/OCR layer.