UNCONFIRMED 64893
Webkit does not scale fonts properly due to lack of DPI configurability 
https://bugs.webkit.org/show_bug.cgi?id=64893
Summary Webkit does not scale fonts properly due to lack of DPI configurability
Dan McDougall
Reported 2011-07-20 14:03:00 PDT
Due to the fact that DPI cannot be configured in Webkit's rendering engine, fonts do not get scaled properly when viewing web pages. I have written and attached a test case (also at http://riskable.com/files/font_scaling_test.html) which clearly demonstrates the problem. Simply open font_scaling_test.html on a system/display with any DPI higher or lower than 96 and you'll wind up with broken font rendering. The greater the distance from 96 dpi, the more inaccurate (and broken) font rendering will be. The point measurement system is defined as 1 point == 1/72 of an inch. This means: * If you have a 10-inch display with 300 dpi, a font at 72pt should appear one inch tall. * If you have a 22-inch display with 96 dpi, a font at 72pt should appear one inch tall. * If you have a 80-inch display with 50 dpi, a font at 72pt should appear one inch tall. See what I'm getting at? As long as the Webkit page renderer doesn't allow configuration of display DPI, fonts will be scaled incorrectly on any display that isn't precisely 96dpi. References: http://en.wikipedia.org/wiki/Point_(typography) -- Dan McDougall "Zero-day events occur because somebody *didn't* disclose a security vulnerability."
Attachments
Font scaling test case (945 bytes, text/html)
2011-07-20 14:03 PDT, Dan McDougall 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Dan McDougall
Comment 1 2011-07-20 14:03:52 PDT
Created attachment 101506 [details] Font scaling test case This HTML file can be used to determine if fonts are being scaled properly by your web browser.
Jeremy Nickurak
Comment 2 2011-07-20 14:18:32 PDT
Dupe of https://bugs.webkit.org/show_bug.cgi?id=18001
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