Recently, I noticed Firefox renders the font as if it’s in high contrast mode or without anti-alias, especially for Japanese font face like Noto Sans. After googling around, I found a workaround to make it a bit smoother.
Open firefox and type about:config in the address bar (just accept the warning).
In the search bar, type the following and hit enter.
gfx.font_rendering.cleartype_params.enhanced_contrast
Change the value from -1 to 0 and we’re done here.
See the difference below
It’s not as smooth as in Chrome, but it much better.