Grayscale PDF Converter
Convert a colour PDF to grayscale (black & white) — cheaper printing, smaller scans. No upload.
Pages are re-rendered through a grayscale filter and rebuilt; text becomes an image.
🔒 Rendering, extraction and rebuilding all happen on your device — documents never leave your browser.
Make a black-and-white version of a colour PDF — for cheaper laser printing, formal submissions that require grayscale, or smaller scanned files.
About Grayscale PDF Converter
Convert a PDF to grayscale in your browser. Every page is rendered with pdf.js, passed through a grayscale filter, and rebuilt into a new PDF. Colour ink is the expensive part of printing, several submission systems demand black-and-white documents, and grayscale JPEGs compress smaller than colour ones — this tool handles all three cases locally, with your document never leaving your device.
How to use Grayscale PDF Converter
- 1Drop your colour PDF.
- 2Pages are re-rendered in grayscale with a quality preset.
- 3Check the preview-free size readout and download.
Why use Grayscale PDF Converter?
- ✓Printing drafts without burning colour toner/ink.
- ✓Meeting grayscale-only submission requirements.
- ✓Smaller files: grayscale pages compress better than colour.
Frequently asked questions
How do I make a PDF black and white?+
Drop it here — each page is redrawn through a grayscale filter and assembled into a new PDF you download. No printer driver tricks needed.
Does grayscale reduce the file size?+
Usually yes — grayscale images carry a third of the colour data and JPEG-compress more efficiently, so scans often shrink noticeably on top of the quality preset.
Will text stay selectable?+
No — pages become grayscale images, so selection/search are lost. Keep your colour original for editing; use this output for printing and submission.
Is my PDF uploaded?+
No — the conversion runs fully in your browser.
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