Which websites did you try it on? For a lot of sites, it won't be able to find a larger version, because it's the largest version that the site hosts. It doesn't perform a reverse image search, it complements using one, as often reverse image search engines don't link to the largest version a website hosts (as they have no knowledge of how to do this). If, however, the site should does host a larger version and the script doesn't support it, please let me know!

Just to make sure it's not some bug however, can you check if https://pbs.twimg.com/media/DlOC3mOWsAEi1ld.jpg redirects to https://pbs.twimg.com/media/DlOC3mOWsAEi1ld.jpg?name=orig (or a similar URL)?

Does it work with the example image provided in the addon's description? (https://pbs.twimg.com/media/DlOC3mOWsAEi1ld.jpg , it should redirect to https://pbs.twimg.com/media/DlOC3mOWsAEi1ld.jpg?name=orig )

To be clear (as stated in the description), it doesn't perform a reverse image search, so it's not necessarily unlikely that the sites you checked didn't have a larger version available that was stored on the site itself. Since I'm not sure which sites you tested it on, I can't really give any specific help regarding the images you tested, sorry!

If however there is a larger version (for example, the link I posted above, an album cover on iTunes, non-original images on Twitter/Instagram/Flickr, etc.) and the script fails to find it, please let me know!

Since (I believe) firefox addons don't allow multiple replies, please feel free to contact me in any of the contact links listed in the addon's description (github, reddit, or discord). I'll try my best to help! :)

Correct, this extension does not perform a reverse image search (I should clarify that in the addon's description).

The goal of this addon is to find larger images that the _website_ provides, many of which are otherwise inaccessible (i.e. the website doesn't link to the larger images, even though they exist). The addon isn't meant to replace a reverse image search engine, but rather to be used as a tool in conjunction with one, since the images linked by a reverse image search often aren't as large as they could be.

To address your specific situation, if you were to try to view album art on a blog, this addon would probably not yield a much larger image, unless the blog author uploaded a larger image to their blog (and linked a scaled-down one).

However, if you were to go on the iTunes website and use the addon on album art there, you'd likely find a much larger image than what's on the website, because iTunes does store very high-definition images on their server (which aren't by default available on their website).

I hope this answers your question. If not, please let me know :) (you can use the Github issue tracker or Discord)