'data:image' data links in page info. How to identify location/allow retrieval without turning off tracker blocking?
One of the sites I regularly use (tesco.com) seems to have changed the way it gets thumbnail images of products, so that they no longer show up unless I turn off script b… (xem thêm)
One of the sites I regularly use (tesco.com) seems to have changed the way it gets thumbnail images of products, so that they no longer show up unless I turn off script blocking for a whole page. (Once I've got one page working, it continues working for the other pages, even if scripts are 'blocked' on those!?)
In the page info I see that the non showing images are only represented by 'data:image' followed by gif.64 and a long string of letters. I understand that this is an html link converted to data, but I don't know why, and have never seen this before. If I copy the 'link' into a new tab, it just goes to a black page. One time I did get a warning pop up from 'NoScript' that the page was doing some dodgy sort of call out, and 'did I want to disable it on this site'. I think it said the call out was to one of the Google sites, but I can't find any way to show this information when NoScript isn't warning me about it; and I can't seem to make 'NoScript' do the pop up every time I try to search with the data link: most times it just goes to the black page: only once or twice has it showed me the warning. I don't understand what's going on. :/
First time 'NoScript' gave the warning, I opted to 'allow this linking for this page', and the thumbnails then showed up, and the 'data:image' link info was replaced with a normal link to a jpg picture (odd because the data link had been prefixed 'gif;64' ?). I then wanted to know which script to enable for future use, but, when I disabled all the page scripts again, the thumbnails stayed there, and continued to work on the whole site: not just the current page!
When I logged out, and came back to continue shopping later, whatever the setting was, had been lost, and I had to go through the rigmarole of allowing all scripts, to get the thumbnails to show, and then turning off all but the main domain permission afterwards.
Can someone please explain what these data links are, and how to see where they are really aimed/what site a picture is actually on, before just letting them connect. And so how to allow just the exception that's needed to show the thumbnails.
Sorry if this sounds dumb, but it's all new to me.
Many thanks for any enlightenment.