Thumbnail Zoom Plus is a Firefox plug-in which shows a full-size image pop-up when you hover over a thumbnail or image link. When you hover your mouse over a thumbnail or an image or video link, the add-on displays the full-size image or video still-frame in a floating window. Supported sites include Amazon, Bing, Facebook, Flickr, Google, IMDb, LinkedIn, Netflix, Pinterest, Reddit, Tumblr, Twitter, Yandex.ru, YouTube, Wikipedia, WordPress, Yahoo Images, and many more.
500px images are not expanding on an user's profile page.
It seems to work fine on the home page, but when browsing through a user's pictures, expandos don't work and just show the exclamation mark icon.
Pressing T opens a tab with "Error 403 No go". The URL is revealed to be someting like this:
https://drscdn.500px.org/photo/135357765/q%3D80_m%3D2000/v2?webp=true&sig=41010e0065d23924d85b5d4667787dd6ec4dd52a70663fe37cd02bd7a0359e18
500px images are not expanding on an user's profile page.
It seems to work fine on the home page, but when browsing through a user's pictures, expandos don't work and just show the exclamation mark icon.
Pressing T opens a tab with "Error 403 No go". The URL is revealed to be someting like this:
https://drscdn.500px.org/photo/135357765/q%3D80_m%3D2000/v2?webp=true&sig=41010e0065d23924d85b5d4667787dd6ec4dd52a70663fe37cd02bd7a0359e18
Removing the "amp;" shows the correct image.
Test page: https://500px.com/tim_santasombat (or just any other 500px profile, I just picked the first one on the front page)