PDF to Grayscale — free, private, in your browser

Convert color PDFs to black-and-white for print savings. Unlike iLovePDF or Smallpdf, nothing is uploaded: the processing happens on your own device, so the tool works even with the Wi-Fi off.

PDF to Grayscale now — no sign-up →

How it works

  1. 1Drop a PDF onto the page
  2. 2Press Convert
  3. 3Download the grayscale PDF

Questions

Are my files uploaded?

No. CommandEditor runs entirely in your browser with WebAssembly — your file never leaves your device. You can verify it: open your browser's network inspector, or switch off Wi-Fi after the page loads; the tool still works.

Does it shrink the file too?

Usually, yes — and the Ink Coverage Estimator can tell you how much toner you save.

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CommandEditor is open source and free forever. 114 tools, 60+ voice commands, on-device AI — your files never leave your device.