Broken Link Notifier

by PluginRx

Description

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:

Scans content when users visit a page after the page fully loads, preventing performance lag
Identifies broken links, including 404 errors, timeouts, images, and embedded YouTube videos
Notifies you via dashboard notifications, email, Discord, and/or Microsoft Teams
Provides a list of broken links for easy review and correction
Allows easy replacement of links straight from the results page (NEW with Version 1.2.0)
Caches working (good) links to skip rechecking them for a configurable amount of time (NEW with Version 1.2.5)

With “Broken Link Notifier”, you can:

Ensure accurate and functional links for your users
Prevent search engines from indexing broken links
Maintain a professional and trustworthy website image
Save time and effort in manual link checking
Scan multiple pages at a time on the back-end from your WP List Tables
Improve performance by caching successful link checks (optional)

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

Demo

Installation

Install the plugin from your website’s plugin directory, or upload the plugin to your plugins folder.
Activate it.
Go to Broken Link Notifier > Settings in your admin menu.
Update your notification method(s) and post types.
Go to Broken Link Notifier > Omitted Pages, and add any pages that you don’t want to scan, such as pages you know won’t have any links on them. This will speed up the multi-scan option.
Page load scans are enabled automatically, so it’s recommended that you test it out by deliberately making some broken links on a test page and then visiting the page. The results should show up on the Broken Link Notifier > Results page, and notify you if you have enabled email, Discord, or Microsoft Teams notifications. Reloading the page will not submit them twice. For testing, you should delete them from the results so they get reported again.
It is suggested to run a Multi-Scan on each of your public-facing post types to quickly see if there are any broken links before others encounter them. Also to omit some links that will be reported as false positives. You can omit individual links quickly from the results, or you can go to Broken Link Notifier > Omitted Links to add a domain with a wildcard (*), which will omit all links starting with that domain. See screenshots for examples.

Screenshots

Page load scan results on back-end
Page load scan results on front-end in dev console
Omitted links
Omitted pages
Detailed single page scan
Multi-Scan running scans on multiple pages in WP List Tables
Find broken links easily on front-end with a glowing animation and red border
Settings
Developer hooks on Help tab

Faq

Will this plugin slow down my site?

No — The plugin is designed to have minimal impact on performance by only scanning content after the page has fully loaded for a visitor. This means it doesn’t interfere with the page render or user experience. Additionally, in version 1.2.5, we introduced a link caching option that can further improve performance.

If enabled (via the Settings page), caching good links will prevent the same working links from being rechecked repeatedly for a set period of time. This reduces unnecessary HTTP requests and improves scan efficiency on high-traffic sites.

You can set the cache duration in seconds — common values include:
– 28800 for 8 hours
– 43200 for 12 hours
– 86400 for 24 hours

Adjust this based on your site’s traffic and how frequently your links change.

Why do some links show as broken when they are not?

If the link works fine and it’s still being flagged as broken, then it is likely either redirecting to another page or there is an issue with the page’s response headers, and there’s nothing we can do about it. If it is a redirect on your own site due to permalink modification, then it’s better to fix the link instead of unnecessarily redirecting. You may use the Omit option to omit false positives from future scans as well. If you are seeing a pattern with multiple links from the same domain, you can go to Broken Link Notifier > Omitted Links to add a domain with a wildcard (*), which will omit all links starting with that domain.

If you feel that there is another issue at hand, We are happy to look into it further with you.

What causes a link to give a warning?

Warnings mean the link was found, but they may be unsecure or slow to respond. If you are getting too many warnings due to timeouts, try increasing your timeout in Settings. This will just result in longer wait times, but with more accuracy. You can also disable warnings if you have too many of them.

What is status code 666?

A status code of 666 is a code we use to force invalid URL code 0 to be a broken link in case warnings are disabled. It is not an official status code.

Can I omit links and pages from scans?

Yes, you can omit links from being checked for validity by using the “Omit” link in the scan results, or by entering them in manually under Omitted Links. Likewise, you can omit pages from being scanned from the results page or Omitted Pages. Wildcards (*) are accepted.

When I click on “Find On Page,” I cannot find the link. Where is it?

Sometimes links are hidden with CSS or inside modals/popups. To find hidden links, go to the page and either open your developer console or view the page source and search for the link. This will show you where it is and which element to look in. Then you can edit the page accordingly. This is more advanced and may require some assistance, so feel free to reach out to us for help.

Why does the dev console show more links that what is scanned on the Multi-Scan?

The Multi-Scan link count does not include links that are filtered out from the pre-check.

What pre-checks are used to filter out broken links?

We skip links that start with # (anchor tags and JavaScript) or ? (query strings), non-http url schemes (such as mailto:, tel:, data:, etc. ), and any links you have omitted.

What can I do if I have the same broken link on a lot of pages?

There are other plugins such as Better Search Replace by WP Engine that will quickly replace URLs on your entire site at once.

Why does my multi-scan page stop loading halfway down?

There is likely an issue with the content on that page causing a redirect. We cannot intercept all redirected content unfortunately. If that is the case, you can omit the page being scanned so you can continue scanning the entire page the next time you try.

Are there hooks available for Developers?

Yes, there are plenty. The following hooks are available:
* blnotifier_html_link_sources ( Array $sources ) — Filter where the links are found in the content’s HTML
* blnotifier_omitted_pageload_post_types ( Array $post_types ) — Filter the post types that you don’t want to scan on page load
* blnotifier_omitted_multiscan_post_types ( Array $post_types ) — Filter the post types that you don’t want to allow for Multi-Scan option
* blnotifier_link_before_prechecks ( String|Array|False $link ) — Filter the link before checking anything
* blnotifier_status ( Array $status ) — Filter the status that is returned when checking a link for validity after all pre-checks are done
* blnotifier_http_request_args ( Array $args, String $link ) — Filter the http request args
* blnotifier_remove_source_qs ( Array $query_strings ) — Filter the query strings to remove from source url on page load scans
* blnotifier_url_schemes ( Array $schemes ) — Filter the URL Schemes skipped during pre-checks
* blnotifier_suggested_offsite_checkers ( Array $checkers ) — Filter the list of suggested offsite checkers on Multi-Scan page
* blnotifier_notify ( Array $flagged, Int $flagged_count, Array $all_links, String $source_url ) — Action hook that fires when notifying you of new broken links and warning links that are found on page load
* blnotifier_email_emails ( String|Array $emails, Array $flagged, String $source_url ) — Filter the emails that the email notifications are sent to
* blnotifier_email_subject ( String $subject, Array $flagged, String $source_url ) — Filter the subject that the email notifications are sent with
* blnotifier_email_message ( String $message, Array $flagged, String $source_url ) — Filter the message that the email notifications are sent with
* blnotifier_email_headers ( Array $headers, Array $flagged, String $source_url ) — Filter the headers used in the email notifications
* blnotifier_discord_args ( Array $args, Array $flagged, String $source_url ) — Filter the Discord webhook args
* blnotifier_msteams_args ( Array $args, Array $flagged, String $source_url ) — Filter the Microsoft Teams webhook args
* blnotifier_strings_to_replace ( Array $strings_to_replace ) — Filter the strings to replace on the link
* blnotifier_force_head_file_types (Array $file_types, Boolean $docs_use_head) — Filter the list of file types that should force a HEAD request, with the $docs_use_head variable determining whether document types should be included

Where can I request features and get further support?

We recommend using our website support forum as the primary method for requesting features and getting help. You can also reach out via our Discord support server or the WordPress.org support forum, but please note that WordPress.org doesn’t always notify us of new posts, so it’s not ideal for time-sensitive issues.

Reviews

Review & Fix Request: Broken Link Notifier Plugin

By hitzgh on October 16, 2025

Hello,

Thank you for developing the Broken Link Notifier plugin — it’s a very useful tool that helps keep my website healthy and error-free.

However, I’ve noticed a recurring issue that I hope can be fixed in a future update.

When the plugin detects a broken link and I fix or remove it, the dashboard correctly shows the message:

“Link is good, removing from list…”

But after reloading the page or reopening the plugin dashboard, the same link and page reappear in the broken links list. It then re-verifies the link again and gives the same output —

“Link is good, removing from list…” —
yet the item never actually disappears from the list permanently.

🔍 Expected Behavior:

Once a link is fixed and verified as good, it should be permanently removed from the list and not appear again after refreshing or rescanning. 🧩 Environment:

WordPress Version: 6.8.3
PHP Version: 8.3

This plugin is genuinely helpful, and I’d really appreciate it if this bug could be addressed in an update to make the experience smoother and more reliable.

Thanks again for your great work on this plugin!

Great idea, missing url filter

By pol (pscolv) on August 31, 2025

I installed this plugin today, and it seems that I've found at last, the solution for checking broken links on my website !

I found very interesting the idea of leveraging visitors for triggering broken links scans... indeed that doesn't require a resource-intensive browsing, generating additional traffic, whereas the visitors already do it... and moreover, they prioritize themselves the pages most visited, which deserve more attention !

The only issue I've identified sofar, is that the plugin is generating many "false positives" on some "ads" URLS, starting with ...googleads.g.doubleclick.net. I suppose it's due to specific behavior on those urls, and actually I don't care for those, since it's all taken care of by Google themselves.

Therefore I think it would be great to have a "url filter" feature, allowing to discard any url containing a given pattern, like in my case " googleads".

Regards,

Pascal.

Completely Amazing, This is the Checker to Get

By John (johnedee) on August 25, 2025

I looked at the various link-checking plugins and this one seemed to have the best philosophy on how to do it right, and it was very transparent and helpful in the descriptions.

So I installed it and it looked pretty good...but was disappointed to see that the plugin's Settings page wasn't working. There was no Save button and the my changes stayed at the defaults. Just to see if maybe I was doing something wrong, I jumped on PluginRX's Discord and posted about it...and even though I was apparently the only user experiencing this problem, the developer immediately replied asking for more information! After confirming what I was seeing, he immediately (on a Sunday, even) released a new version that fixed the issue! It's working great and I found a bunch of bad links on my site that I can now fix.

To top it all off, this plugin is free, so don't hesitate to install it immediately. I'll also be checking out the other plugins from PluginRx, most of which are also free.

Good plugin for managing multiple articles with many external links

By mmatei on July 28, 2025

The plugin is very useful for checking links. I have a website with multiple references to other websites and external links. The plugin just checks if the referenced URLs display any errors when accessed. Excellent for the purpose.

Fantastic plugin—clean interface and a real time-saver!

By colnago1 on May 9, 2025

Fantastic plugin—clean interface and a real time-saver! The only thing I’d love to see added is an option to include links with an HTTP 200 status in the results list. Being able to view healthy links alongside broken ones would make it even easier to verify that everything is working perfectly. Keep up the excellent work!

Gets the job done

By lklawless on May 7, 2025

I had some performance issues in the beginning; support was very helpful and reactive and now it works perfectly. Thank you!

The link checker I've been looking for

By cantabber on February 19, 2025

Found this plugin after being serially unhappy with some others in the past, including one with a paid subscription. Yours is great, easy to figure out and does just what I want, when I want it to. And free! Thank you so much for your work and time. I'll look forward to seeing more from you.

Awesome

By MrPhunin (mrphunin) on February 14, 2025

The Best Link Checker Plugin!

Very useful tool, great support

By Rolf Allard van Hagen (RavanH) on January 9, 2025

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

Best Broken Links Plugin on WordPress

By supertrooper2 on November 20, 2024

This relatively unknown plugin works great and is easy to use. The functionality is very comprehensive and can run checks on all pages or all posts.

I hope that more people discover this plugin. I would rate with 10 stars if possible.

Many thanks to Aristocles (@apos37) for developing this great plugin.

Changelog

1.3.4

Tweak: Change “Delete” action link on omitted links/pages to “Remove Omission” (props Diane for suggestion)
Tweak: Highlighted the admin bar count red

1.3.3

Fix: Settings error causing missing fields and submit button (props @DLLHell)

1.3.2

Update: Added support for additional roles to have capability of managing broken links; removed blnotifier_capability hook

1.3.1.1

Fix: preg_replace() deprecation error (props @venutius)

1.3.1

Fix: Improper Neutralization of Formula Elements in a CSV File (props @jfriedli/WordFence)
Fix: SSRF vulnerability by validating all URLs before remote requests using is_url_safe() (props @jfriedli/WordFence)

1.3.0

Update: New support links

1.2.6.1

Fix: Option in settings to show good links on results page was set to true by default; turned it off

1.2.6

Update: Added an option in settings to show good links on results page (props to @colnago1 for suggestion)
Update: Added an export page (props to @colnago1 for suggestion)

1.2.5.3

Fix: Link search not finding some URLS
Fix: Undefined array key “min”

1.2.5.2

Fix: Function wpdb::prepare was called incorrectly. Unsupported value type (array).

1.2.5.1

Fixes: Sanitizing and unslashing some variables

1.2.5

Update: Added option for caching good links (enable in settings)

1.2.4.2

Fix: If no link is found, omit it

1.2.4.1

Tweak: Updated “Did not pass pre-check filter” error to provide more information

1.2.4

Tweak: Added minified versions of results-front.js and results-front.css
Tweak: Removed omitted links and omitted pages hooks from readme.txt since they were moved to their own pages

1.2.3

Update: Auto-switch user agent for X/Twitter links if a custom user agent isn’t provided
Update: Updated author name and website again per WordPress trademark policy

1.2.2

Update: Changed author name from Apos37 to WordPress Enhanced, new Author URI
Tweak: Optimization of main file
Fix: Undefined variable $redirect_detected

1.2.1

Update: Added a method column to the results page
Fix: Links being added from invalid sources
Tweak: Links without a source will be automatically removed
Fix: Some links are being added to results without a source
Update: Added option to pause auto-verification on results page
Update: Admin bar count is reduced in real time if results are removed
Tweak: Update notice on results page from “trash” to “clear” (props @cantabber for pointing it out)

1.2.0

Update: Added code 413 to warnings and automatically code files larger than 10 MB with 413 when using GET requests (allowing redirects option)
Update: Added an option for forcing documents to use HEAD requests
Fix: Gifs, videos, and other large files timing out (props @mrphunin)
Update: Added a Replace Link action to link column on results page (props a4jp-com for suggestion)
Update: Added a Trash Page action to source on results page; must enable it in Settings (props @mrphunin for suggestion)
Fix: Sometimes no permission for trash error; changed Clear Result action to use ajax instead
Tweak: Renamed all other action links on link and source columns on results page
Tweak: Changed Edit link to “Edit Page” (props a4jp-com)

1.1.4.2

Tweak: Added support for translations on some other info boxes
Update: Added an info box to the top of the results page with clarification on trashing results
Fix: Undefined array key “HTTP_REFERER”

1.1.4.1

Update: Added an option to pause front-end scanning (props @ravanh)
Update: Added status codes to settings, allowing you to change types, deprecated hooks will only work if codes in settings have no been saved: blnotifier_bad_status_codes, blnotifier_warning_status_codes

1.1.4

Update: Added field for user agent and option to mark status code 0 as broken instead of warning (props @ravanh)

1.1.3.8

Update: Allowed max redirects to be 0 to show redirect status code instead of the final status code

1.1.3.7

Fix: Multi-Scan redirecting if content is not found or if pages have shortcodes that redirect

1.1.3.6

Update: Added settings for allowing redirects and setting max redirects amount (props @ravanh)

1.1.3.5

Fix: Fatal error on helpers.php at line 1001

1.1.3.4

Fix: Fatal error when trying to uncheck all post types in settings (props @ravanh)

1.1.3.3

Fix: Added support for links starting with // (props pauleipper)

1.1.3.2

Fix: Added full path to multi scan links to support multisite (props oddmoster)

1.1.3.1

Fix: Added full path to “Edit” link to support multisite (props oddmoster)

1.1.3

Update: Added a link search page

1.1.2

Fix: Warnings from Plugin Checker

1.1.1

Update: Auto-delete omitted links on Results page
Fix: Some links not being deleted due to special characters

1.1.0

Fix: YouTube links showing broken

1.0.9

Fix: Umlauts in links showing broken (props ralf d)
Tweak: Removed donate link, nobody donates anyway, working on premium version instead

1.0.8

Update: Added demo to readme.txt

1.0.7

Fix: Results page rescan not working on some links
Fix: Offsite checker links broken XD

1.0.6

Fix: wp_mail_failed logging error
Update: Added a string replace for "×" => "x", which is being converted in images with sizes (ie _100x66.png)
Update: Added a new filter blnotifier_strings_to_replace for replacing simple characters

1.0.5

Update: Added a re-scan verification when loading results page as some false-positives occur with poor connections
Tweak: Updated plugin tags
Update: Added other plugins to bottom of help page
Update: Added an option in settings to include/exclude image src links
Tweak: Changed default timeout to 5 seconds

1.0.4.2

Fix: Emailing empty content if already added to results; stopped duplicate emails

1.0.4.1

Fix: MS Teams integration error with logging

1.0.4

Fix: Undefined variable on help page
Update: Added support for checking YouTube video links (props shirtguy72)
Update: Added support for iframe links (props shirtguy72)
Update: Added support for image source links

1.0.3.1

Tweak: Fix minor issues found by WP repo plugin reviewer

1.0.3

Tweak: Updates recommended by WP repo plugin reviewer
Fix: Settings saved notification not echoing
Tweak: Removed links post type and help docs post types if installed

1.0.2

Tweak: Added nonce to Page Scan JS
Update: Added Multi-Scan and Page Scan results to results page
Tweak: Changed “Full Scan” references to “Multi-Scan”

1.0.1

Deployment