Under "About this extension" here on this page, you need to add if it's compatible with popular security/privacy addons (like uBlock, NoScript &Ghostery etc) and maybe mention general type of addon which might conflict(functionality/performance) with ClearURLs.
Great addon! The only thing missing that it could really use is the ability to whitelist -- whitelist by domain, or even better, whitelist by any part of a URL that's seen.
As an example, the Skip-Redirect addon does this, and it works well (I'm not advertising that addon; they're different addons that serve different purposes). Otherwise, you have to disable this addon's functionality altogether when a certain site isn't working.
What would also be great is if there was a notification or popup that could appear when stripping occurs. Skip-Redirect also does this and it's helpful to know, since sometimes functionality on a site breaks and it can be confusing what caused it (the website itself, uBlock Origin, Skip-Redirect, other addons, etc).
Thanks for your positive feedback. You can see a little orange badged at the top right corner from the ClearURLs icon, that increases with every action ClearURLs takes for the current URL in the active tab.