PluginRx

The “Broken Link Notifier” WordPress plugin is a vigilant guardian for your website’s links, monitoring and alerting you to broken or dead links as users visit your site. This ensures a seamless user experience and helps prevent search engine ranking penalties. Unlike other broken link checker plugins that can cause performance and timeout issues with full site scans, this plugin focuses on notification, making it a great complement to offsite services that handle full site scans.
This plugin:
<ul>
<li>Scans content when users visit a page after the page fully loads, preventing performance lag</li>
<li>Identifies broken links, including 404 errors, timeouts, images, and embedded YouTube videos</li>
<li>Notifies you via dashboard notifications, email, Discord, Slack and/or Microsoft Teams</li>
<li>Provides a list of broken links for easy review and correction</li>
<li>Allows easy replacement of links straight from the results page (NEW with Version 1.2.0)</li>
<li>Caches working (good) links to skip rechecking them for a configurable amount of time (NEW with Version 1.2.5)</li>
</ul>
With “Broken Link Notifier”, you can:
<ul>
<li>Ensure accurate and functional links for your users</li>
<li>Prevent search engines from indexing broken links</li>
<li>Maintain a professional and trustworthy website image</li>
<li>Save time and effort in manual link checking</li>
<li>Scan multiple pages at a time on the back-end from your WP List Tables</li>
<li>Improve performance by caching successful link checks (optional)</li>
</ul>
This plugin is a must-have for website owners, developers, and SEO enthusiasts who want to guarantee a smooth and error-free browsing experience for their audience!
IF THIS PLUGIN FLAGS SOME LINKS AS BROKEN WHEN THEY ARE NOT, PLEASE READ THE FAQ BELOW
<h3>Demo</h3>
<iframe loading="lazy" class="youtube-player" width="750" height="422" src="https://www.youtube.com/embed/gM9Qy0HLplU?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en-US&autohide=2&wmode=transparent" allowfullscreen="true" style="border:0;" sandbox="allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox"></iframe>

Broken Link Notifier


The developer has been extremely responsive and provided many improvements in a very short time. This very useful tool keeps getting better :)


Very useful tool, great support

Get notifications when a visitor loads a page with broken links

Cheung Tat Ming

WP-LinkCheck is a lightweight plugin ability to check all image sources are broken inside your WordPress blog, it check the http header by server response ,it don’t have to download the images to boost the performace and bandwidth.
Repersent the result to SlickGrid utilizes virtual rendering to enable you to easily work with 50000+ of items without any drop in performance. 
WP-LinkCheck is safe to use. It will NOT make any database change (create table, modify table etc…), and NOT to create any cache files to keep your WordPress directory clean.
If the broken links are found, WP-LinkCheck will NOT do any modication / deletion to the content, everythings is under your control, you can simply click the post title and correct the url by yourself.
Ability to handle several HTTP Error in broken image includes: 
<ul>
<li>403 Access Denied/Forbidden</li>
<li>404 File Not Found</li>
<li>410 Gone</li>
<li>500 Internal server error</li>
</ul>
<h3>Future Development</h3>
<ol>
<li>Support youtube movie checking by Youtube API.</li>
<li>Options to filter record by a period.</li>
</ol>
Any Suggestion? Please go to my Blog : http://blog.miawork.com/?page_id=2190 and leave a suggestion.

WP-LinkCheck

WP-LinkCheck is a lightweight plugin ability to check all image sources are broken inside your WordPress blog.

Broken Link Notifier vs WP-LinkCheck