Mozilla Firefox: Rendering Modes

Disclaimer: This information is based on Firefox 4, now Firefox 28 is the current version, so maybe it’s obsolete…

  1. Enter about:config in the address bar.

  2. Search for gfx.font_rendering.cleartype_params.rendering_mode.

  3. Possible values are:

    • -1: Firefox default
    • 0: default
    • 1: aliased
    • 2: GDI Classic
    • 3: GDI Natural
    • 4: Natural
    • 5: Natural Symmetric