Last modified: 2014-04-10 23:03:46 UTC

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Bug 63686 - Effective font size is lower in Firefox/Iceweasel after typography refresh
Effective font size is lower in Firefox/Iceweasel after typography refresh
Product: MediaWiki
Classification: Unclassified
Interface (Other open bugs)
All All
: Unprioritized normal (vote)
: ---
Assigned To: Nobody - You can work on this!
Depends on:
Blocks: typography-refresh
  Show dependency treegraph
Reported: 2014-04-08 17:36 UTC by Matthew Flaschen
Modified: 2014-04-10 23:03 UTC (History)
7 users (show)

See Also:
Web browser: ---
Mobile Platform: ---
Assignee Huggle Beta Tester: ---

English WIkipedia screenshot showing old fonts (2013-08-02) (253.63 KB, image/png)
2014-04-08 17:37 UTC, Matthew Flaschen
English WIkipedia screenshot showing new fonts with smaller effective size (2014-04-08) (252.68 KB, image/png)
2014-04-08 17:42 UTC, Matthew Flaschen

Description Matthew Flaschen 2014-04-08 17:36:03 UTC
On my system, with Iceweasel (Firefox) 24.3.0, the effective body font size decreased.  This appears to be due to the change in effective body font from DejaVu Sans to Nimbus Sans L.  It seems the font family change means it's actually smaller despite the slight em bump.

I'm not sure what a feasible solution to this is, but I'm putting it here for tracking.

I'll attach screenshots from English Wikipedia, but the issue is also present in core (I compared wmf/1.23wmf19 to master (768c1872435a94ec936c982dd72cb0074b7ea6fc to verify it was present in core itself).
Comment 1 Matthew Flaschen 2014-04-08 17:37:13 UTC
Created attachment 15052 [details]
English WIkipedia screenshot showing old fonts (2013-08-02)
Comment 2 Matthew Flaschen 2014-04-08 17:42:29 UTC
Created attachment 15053 [details]
English WIkipedia screenshot showing new fonts with smaller effective size (2014-04-08)
Comment 3 Steven Walling 2014-04-08 17:58:47 UTC
Yes, Nimbus is the intended new font here.  

The tradeoffs here are not obvious I think. Nimbus might end up a bit smaller, but the x-height is improved, which may on balance improve readability. 

I'd be interested to see what the Chrome experience is too, since on Linux they tend to render slightly differently.

Jared, thoughts?
Comment 4 Jared Zimmerman (WMF) 2014-04-08 18:36:49 UTC
subjectively I think the Nimbus font is easier to read because of the greater difference i x-height to ascender height.
Comment 5 Steven Walling 2014-04-10 23:03:46 UTC
Per Jared's agreement that the advantage of Nimbus's improved x-height is worth it.

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