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Small fonts have color distortions when rendering on Linux, how to fix?

  • 4 replies
  • 2 have this problem
  • 94 views
  • Last reply by FredMcD

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I noticed that small fonts on one website were strangely colorful. I narrowed it down to a simple HTML snippet:

<span style="font-family:sans-serif; font-size:10pt; font-weight:lighter; color:white; background-color:black;"
      >The quick brown fox jumps over the lazy dog</span>

Attached scaled image on how it renders on my Linux Firefox 47.

The text is supposed to be white, and it is working on windows. On two different Linux distributions (Arch and Ubuntu) colors appear out of nowhere. Does Firefox need something specific to be installed on Linux for correct font rendering?

I noticed that small fonts on one website were strangely colorful. I narrowed it down to a simple HTML snippet: <pre><nowiki><span style="font-family:sans-serif; font-size:10pt; font-weight:lighter; color:white; background-color:black;" >The quick brown fox jumps over the lazy dog</span></nowiki></pre> Attached scaled image on how it renders on my Linux Firefox 47. The text is supposed to be white, and it is working on windows. On two different Linux distributions (Arch and Ubuntu) colors appear out of nowhere. Does Firefox need something specific to be installed on Linux for correct font rendering?
Attached screenshots

Modified by cor-el

Chosen solution

Looks that Firefox has a problem with the anti-aliasing settings and uses all available horizontal RGB pixels to render the text.

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All Replies (4)

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Seems HTML wasn't escaped correctly in the original post:

<span style="font-family:sans-serif; font-size:10pt; font-weight:lighter; color:white; background-color:black;"

     >The quick brown fox jumps over the lazy dog</span>
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Chosen Solution

Looks that Firefox has a problem with the anti-aliasing settings and uses all available horizontal RGB pixels to render the text.

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cor-el said

Looks that Firefox has a problem with the anti-aliasing settings and uses all available horizontal RGB pixels to render the text.

Disabling sub-pixel rendering solved the issue, thanks.

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