It’s often too easy to make edits to your web site that result in a broken link. This plugin will automatically email the web site administrator whenever a 404 is encountered, along with a link to the page the 404 originated from. With this knowledge in hand, you can search the page for the problem and either remove or fix it.
Notifications are also triggered by missing media, such as images, video, CSS files and more.
Report any issues at the official 404 Notify Support WordPress page.
How to use
Once activated, there is nothing to configure. There is no settings interface. Simply activate the plugin and forget about it.
Deactivate the plugin, delete if desired.
Install, activate, done.
Getting persistant notifications?
You’ve probably got a missing asset on your page, most likely an image but it could be something else. It’s important to remember that a 404 can be instigated not only by a missing page, but also a missing asset such as an image, video, CSS file, JS file or anything that has a URL.
For example, if you’ve got a missing image in header.php (which gets called every time a page is loaded), then you’ll receive a notification every time a page is loaded until you fix the problem.
How can you find the path of a missing asset?
The eastest way is to open the website in Chrome, right click somewhere on the page and select Inspect, then click the Console tab and look for any mention of a 404. Any 404 errors will appear in red like in the screenshot above.
Once you can see the missing asset, you can fix the problem and the email notifications will stop.