Here's a tip that, so far, has saved my bacon when using my iPad 2 to work with Flickr images.
With the latest update to Flickr, my old iPad 2, running  iOS7.x, wouldn't function anymore to highlight & copy HTML code from an image's "share" link in Flickr. Neither Safari or Chrome browser would work properly either, as if the tablet's touch-screen feature had been partially disabled. This is specific to embedded windows within a browser, and began to happen, intermittently, since the upgrade from iOS5 to 6, several years ago, but I'd since found workarounds. 
This time, I ended up downloading the Puffin browser from the App Store, and it seems to work fine now. It also gives you some Flash capability. It appears to operate by means of  a virtual Chrome desktop browser running from a server farm in California. I found this out because, after attempting to log into Google's Blogger via the Puffin browser, Google sent me a security message saying a Chrome browser from California had attempted a logon. The freeware version of Puffin doesn't function 24/7, while the pay version does.
I know this is only relevant for people using Flickr on the iPad, but there you are. BTW, the "Flickr" app for iOS is a POS, even dumber than the Safari/Chrome version.
Disclaimer: I have no interest financially or otherwise with the Puffin browser people, I'm only sharing my personal experience, after years of frustration using the iPad with Flickr.
~Joe