Please provide public (no password) link(s) that we can check out. No Personal Information Please !

Type about:preferences#content<enter> in the address bar. Across from fonts and colors, press the Advanced button. On the bottom, turn on Allow Web Sites To Choose Their Own.

Fonts Information - Detected via Flash http://browserspy.dk/fonts-flash.php?detail=1

Can you attach a screenshot?

• https://support.mozilla.org/en-US/kb/how-do-i-create-screenshot-my-problem
• use a compressed image type like PNG or JPG to save the screenshot

This could be related with the recent switch in Firefox 52+ from Cairo to Skia for canvas/content rendering.

Firefox 52+ has changed from Cairo to Skia for canvas/content rendering.

• https://www.mozilla.org/en-US/firefox/52.0/releasenotes/
• When not using Direct2D on Windows, Skia is used for content rendering

You can modify these gfx.*.azure.backends prefs on the about:config page to revert to the old font rendering swap the skia,cairo order to cairo,skia or remove the skia and leave cairo.

• gfx.canvas.azure.backends = direct2d1.1,cairo,skia
• gfx.content.azure.backends = direct2d1.1,cairo,skia

You can open the about:config page via the location/address bar. You can accept the warning and click "I'll be careful" to continue.

• http://kb.mozillazine.org/about:config

my screenshot from there http://leshaigraet.ru/vote-about-stream/

cor-el said

You can modify these gfx.*.azure.backends prefs on the about:config page to revert to the old font rendering swap the skia,cairo order to cairo,skia or remove the skia and leave cairo.

• gfx.canvas.azure.backends = direct2d1.1,cairo,skia
• gfx.content.azure.backends = direct2d1.1,cairo,skia

it didn't work for me

FredMcD said

Please provide public (no password) link(s) that we can check out. No Personal Information Please !

---

Type about:preferences#content<enter> in the address bar. Across from fonts and colors, press the Advanced button. On the bottom, turn on Allow Web Sites To Choose Their Own.

Fonts Information - Detected via Flash http://browserspy.dk/fonts-flash.php?detail=1

Yes I tried it first of all - it works. If I turn off "Allow Web Sites To Choose Their Own" - I can see web page correctly. But I think it is not good solution because I miss the individual design of web pages.

That about "Detected via Flash" - I see the all fonts correctly (thank you for interesting link)

That website uses a downloadable font named "Open Sans Regular" as you can see in the Inspector.

• https://developer.mozilla.org/en/Tools/Page_Inspector
• https://developer.mozilla.org/en/Tools/Page_Inspector/How_to/View_fonts
• devtools.fontinspector.enabled = true

We have seen issues reported before with this specific font.

cor-el said

That website uses a downloadable font named "Open Sans Regular" as you can see in the Inspector.

• https://developer.mozilla.org/en/Tools/Page_Inspector
• https://developer.mozilla.org/en/Tools/Page_Inspector/How_to/View_fonts
• devtools.fontinspector.enabled = true

We have seen issues reported before with this specific font.

Thank you again cor-el I used "Inspect Element" through right click on my mouse. I came to the same conclusion - My problem is the system font "Open Sans Regular". I found it in my system fonts folder, it's look well and the file reads correctly. Anyway I download new font file from the web and replaced (reinstall) my ttf file. - and problem solved Now. P.S. I do not really know what particular point of this solution. now I little sorry that I didn't make a copy of my old Open Sans Regular TTF file. But like I said at first sight, it looked good.