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Network activity: Runs in your browser. The PDF itself stays in your browser unless explicitly uploaded.

Convert a PDF to grayscale

Turn a colour PDF black & white to save ink when printing. It all happens in your browser — your file is never uploaded.

Convert a PDF to grayscale, in your browser

Turn a colour PDF black & white to save ink when printing — all on your device, with no upload.

Nothing is uploaded

The whole thing runs in your browser — open your network tab and watch: your file never leaves your device. Most online tools round-trip your document through their servers.

Print-ready black & white

Every page is rendered in grayscale — ideal for mono printers, faxing, or shrinking an ink-heavy document before you print.

Free, no account

No watermark, no sign-up. Convert and download.

Frequently asked questions