The Snitchalt is a Google Chrome extension that find images without the attribute alt
- Download the extension
- Now in Chrome, open the browser menu, go to "Tools" and click "Extensions";
- Enable the "Developer Mode" option and click "Load expanded extension ...";
- Finally, locate the directory on your computer where the extension was saved, unpack the files, select the directory with the same extension name and click "OK". The extension is installed.