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.
- 100% local. The PDF never leaves this device — open DevTools and watch.
- Print-ready. Every page is rendered to grayscale — ideal for mono printers and faxing.
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.