User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Firefox/24.0 (Beta/Release) Build ID: 20130910160258 Steps to reproduce: To reproduce this, look at the PDF file found on the Oracle support site: http://www.oracle.com/us/support/library/057419.pdf#page=4&zoom=auto,0,729 Actual results: The internal PDF viewer rendered the characters unevenly. Letters like 'n', 'h' and 'r' seem much taller than they should be. At a closer zoom, the letter 'l' appears to be in bold. Expected results: It should have rendered as you see in the Adobe viewer

It looks fine on my side. http://i.imgur.com/YVrdmGK.jpg Did you disable HWA? https://support.mozilla.org/en-US/kb/forum-response-disable-hardware-acceleration

Thanks for the quick response (and sorry for the slow one). I disabled HW acceleration but still see the same issue.

One additional item I just thought to test. I disabled all addons and restarted in safe mode but still see the same issue.

Sorry for the comment spam. I just played around with the zoom and at 140%+, it renders properly. Below that is when it starts to look wrong

Weird. Could you test with a clean profile (don't play with the settings in this new profile): https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles

I tried with a new, clean profile but still see the same issue

Mozilla/5.0 (Windows NT 6.1; WOW64; rv:27.0) Gecko/20100101 Firefox/27.0 I can reproduce the issue on latest Nightly (20131008030202) but only when HWA is disabled. Marking this as NEW.

Yes, I tried with HWA off and it's reproducible. Just play with the zoom level to see the various issues (letters in bold e.g.).

This should be fixed upstream: https://github.com/mozilla/pdf.js/pull/4072.

Any ETA when this is gonna hit live? github says merged into master, but: Most PDFs look like this for me: http://snag.gy/WNJJm.jpg original: http://www10.informatik.uni-erlangen.de/Publications/Papers/2005/LBMCFD_LNCSE51.pdf

Firefox 35.0 was just released, the release notes say: PDF.js updated to version 1.0.907 I tested the LBMCFD_LNCSE51.pdf and oracle linked documents and the look fine with HWA on. The first one is maybe a bit blurry, but the bug seems to be resolved. (I tested on Windows 7 SP1 64 bit - 32 bit Firefox)

Yeap, it seems to be fixed indeed, very nice!

I just installed 35.0 and took a look at the original document, looks much better, thanks!