Font Rendering & Firefox Hardware Acceleration

Apr 11, 2013

By default, Firefox ships with the Use hardware acceleration when enabled option turned on. Unfortunately, Firefox has a number of font rendering bugs under the hardware acceleration umbrella (the following are a select few):

As a result of these bugs, I've run with hardware acceleration disabled on my personal systems for quite some time. This, however, has resulted in an unforeseen consequence with my web development. The apps and pages I've developed look great in every browser, except stock Firefox! I only recently ran into this issue when I re-enabled hardware acceleration on my work laptop (in the process of creating a new profile). To my horror, several sites I had developed looked pretty terrible, my photo site being one among them.

I have since rolled out an updated stylesheet to my photo site, fixing the problems that showed up in stock Firefox. It should (hopefully) still look alright in all other browser variants (if you spot a bug, let me know). It's worth knowing, however, that enabling hardware acceleration in Firefox is a worthwhile thing to do if you develop things for the web. The underlying bugs in the rendering engine may bring out underlying flaws in your design.

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