Here I've worked hard to whittle down my top 50 Google Chrome extensions down to the top six all-time favorites that have become totally indispensable.
All these extensions are free to download from the Google Chrome Web Store. Click on the link to download (you can always disable or delete an extension at a later date if you decide it is not for you).
How to protect your Google Account with the Advanced Protection Program
Tampermonkey allows you to customize web pages by downloading and installing userscripts. It's one of those extensions that once you start experimenting with it, you'll end up wanting to customize every page you regularly visit.
What it can do is really limited by the scripts available, or, if you decide to make scripts yourself, your imagination!
This extension allows your browser to monitor web pages for changes automatically. It can inform you whenever a particular page changes without you having to go and check every time, and it can even show you what the differences are.
I have a long list of websites that I keep an eye on using this tool, and so far, it has worked flawlessly.