This is a work-in-progress Greasemonkey script. If you are looking at a low resolution thumbnail-type image on one of the websites supported by this script, you can click your "Embiggen" bookmarklet, and you'll be redirected to the largest available version of that file. Currently, it works with:
- YouTube (thumbnails)
- Flickr
- Bandcamp (album art, profile pics, etc)
- Wikimedia Foundation sites (Wikipedia/etc)
To install the script, you'll need the Tampermonkey extension if you're in Chrome (I believe Firefox natively supports Greasemonkey scripts but idk). Once it's installed, copy-paste the embiggener.js file into a new script and save it. Then, create a bookmark with the following URL: "javascript:runEmbiggener()" (if you're in Chrome, you'll need to create a bookmark of any web page, and then edit the URL to that). Any time you click that bookmark, it'll attempt to find the bigger version of whatever image you're looking at.