Web Store extensions unfortunately don't work in Ungoogled Chromium. There is a a way around it however. It requires a website that fetches the extension file. Source: about 1 year ago

Yeah, that's definitely a downside to creating Chrome extensions for constantly changing sites. However, you could implement checks that notify you quickly of any breaking changes. I don't have the code hosted publicly on GitHub, but you can use sites like this one to obtain it. The code for this extension is not obfuscated. Source: over 1 year ago

Go to https://crxextractor.com/ and use the link from the downloadhelper download page (https://chrome.google.com/webstore/detail/video-downloadhelper/lmjnegcaeklhafolokijcfjliaokphfk) download the crx and then go to brave://extensions/ and enable developer mode and drag and drop the crx file. Source: over 1 year ago

Chrome extensions are written in Javascript. In fact, you can look at the full source code for any Chrome extension you want - you can find where it's downloaded on your computer (~/Library/Application Support/Google/Chrome/Default/Extensions for Mac) or you can use a website like this to download it. Source: over 1 year ago

P.S. You can always grab the code from https://crxextractor.com it’s a bit messy, but thats my style of coding :). Source: over 1 year ago

I really like https://launchpad.net/simple-scan. Source: over 2 years ago