I want to set a maximum size for pictures when FF shows websites. How can i do that? NO I DONT MEAN "HOW TO ZOOM".

Question

I have FF 34 but this problem has been there for a lot of earlier versions. On many webpages there are pictures that cover my whole screen, and I want to set maximum size for showing images on webpages.
I ONLY wanr to change the maximum size of the images, AND IAM NOT asking about how to zoom the webpage.

Answer 1

Do you want to hide large images or merely make them smaller by setting a max-width and max-height?
You would probably have to use JavaScript (bookmarklet) to achieve this reliably.
There are bookmarklets to make large images fit in the window to avoid a horizontal scroll bar
You can try this code in the <b>userContent.css</b> file (adjust the max-width accordingly).
*http://kb.mozillazine.org/userContent.css
<pre><nowiki>img { max-width: 1024px !important; height: auto !important; }</nowiki></pre>
The customization files userChrome.css (user interface) and userContent.css (websites) are located in the <b>chrome</b> folder in the Firefox profile folder.
*http://kb.mozillazine.org/Editing_configuration
*Create the chrome folder (lowercase) in the <xxxxxxxx>.default profile folder if this folder doesn't exist
*Use a plain text editor like Notepad to create a (new) userContent.css file in the chrome folder (file name is case sensitive)
*Paste the code in the userContent.css file in the editor window
*Make sure that you select "All files" and not "Text files" when you save the file via "Save file as" in the text editor as userContent.css.<br>Otherwise Windows may add a hidden .txt file extension and you end up with a not working userContent.css.txt file