https://en.wikipedia.org/wiki/Screenshot
   https://support.mozilla.org/kb/how-do-i-create-screenshot-my-problem

   Tools > Options > Advanced > General > Browsing: "Use hardware acceleration when available"

   https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

   https://support.mozilla.org/kb/upgrade-graphics-drivers-use-hardware-acceleration

   https://developer.mozilla.org/Tools/Page_Inspector

   http://browserspy.dk/fonts-flash.php?detail=1

   Tools > Options > Content : Fonts & Colors > Advanced
   [ ] "Allow pages to choose their own fonts, instead of my selections above"

   Use a compressed image type like PNG or JPG to save the screenshot
   Make sure that you do not exceed the maximum size of 1 MB

Please see [/questions/1115815] Greetings Cor-el - sent me suggestions to try - which did not help any, and I couldn't reply to the email; Cor-el suggested: Can you attach a screenshot? https://en.wikipedia.org/wiki/Screenshot https://support.mozilla.org/kb/how-do-i-create-screenshot-my-problem You can try to disable hardware acceleration in Firefox. Tools > Options > Advanced > General > Browsing: "Use hardware acceleration when available" You need to close and restart Firefox after toggling this setting. https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes You can check if there is an update for your graphics display driver and check for hardware acceleration related issues. https://support.mozilla.org/kb/upgrade-graphics-drivers-use-hardware-acceleration It is possible that there is a problem with the font that is used to display the text. You can right-click and select "Inspect Element" to open the Inspector ("3-bar" menu button or Tools > Web Developer) with this element selected. You can check the font(s) used for selected text in the Font tab in the right pane of the Inspector. https://developer.mozilla.org/Tools/Page_Inspector You can do a font test to see if you can identify corrupted font(s). http://browserspy.dk/fonts-flash.php?detail=1 You can try different default fonts and temporarily disable website fonts to test the selected default font. Tools > Options > Content : Fonts & Colors > Advanced [ ] "Allow pages to choose their own fonts, instead of my selections above" Use a compressed image type like PNG or JPG to save the screenshot Make sure that you do not exceed the maximum size of 1 MB ============================================================ I performed the suggestions as best as I could, with no results. Here is a 2nd Firefox problem I just encountered. This support page would NOT upload 2 small screenshots. I waited for 10 minutes for the 1st one up upload; all I saw was the rotating busy icon. One pic is 59.3 kb, the other pic is only 75 kb - your own support page is not working correctly - what gives? The links only show up when I highlight the whole page as shown in the attached pictures.