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Link Checker

by Marco Beierer · SEO

Also makes 1 other plugin · 7K+ installs across the portfolio →

An easy to use link checker for WordPress to detect broken links and images on your website.

How scoring works →
78 Health · B
Maintenance 100/100
Rating quality 59/100
Support 70/100

78 health vs 64 average across 1,223 SEO plugins

Directory ranking optimization

How it's scored →

How well this listing is tuned to rank in WordPress.org search, on the factors an owner controls. Not popularity, optimization.

94 / 100

Excellent listing optimization

Well tuned across the board

Update recency 100/100
WP compatibility 100/100
Rating quality 75/100
Listing tuning 100/100

Daily downloads

Since 2022-10-05 · 1,425 days · wp.org + Plugin Pulse archive

+88% vs prior 30d
62Downloads · Aug 26

30-day downloads

Rolling 30-day volume · peaks are release surges

2.8K

now · peak 6.1K

2.8K30d downloads · Aug 26

Directory rank vs rivals

wp.org popularity rank over time · higher is better · when a rival's line climbs above yours, they've overtaken you

Link Checker · #3561 you Broken Link Checker · #199 External Links Overv · #6611 Yoast SEO · #2

Rating trend

Star average over time · dips mark rough releases

3.2Stars · Aug 26

Update activity

How busy the existing users are, measured as downloads in the last 30 days for every 1,000 active sites. A spike means a new release everyone's pulling; a long, slow decline means an aging user base that updates less.

707per 1k installs · Aug 26

Release cadence

Occasionally updated
from wp.org release tags

How often this plugin actually ships. A steady rhythm is the maintenance signal a single "last updated" date can't show.

1

releases in the last 12 months

3mo ago

latest release · v1.19.0

46

tagged releases on record

Recent releases

1.19.0 · 3mo ago1.18.7 · 3.6y ago1.18.6 · 3.9y ago1.18.5 · 4.1y ago1.18.4 · 4.1y ago1.18.3 · 4.1y ago1.18.2 · 5.1y ago1.18.1 · 5.9y ago1.18.0 · 7.2y ago1.17.0 · 7.4y ago1.16.2 · 7.5y ago1.16.1 · 7.7y ago1.16.0 · 7.9y ago1.15.1 · 8.1y ago

What its installed base runs

via wordpress.org

Share of active installs on each version of this plugin · 39% run the current release. Green is the current release; a big slice on older versions is a user base that has stopped updating.

v1.18 57%
v1.19 39%
Older / other versions 3.7%

Estimated active installs

The public count shows “4K+”. Our estimate pins where the real number sits.

tracked estimate
4K–5K ≈4.7K

Refined from the date this plugin crossed into its current band.

Install history · since 2015-08-14 · 1,430 observations

4KInstalls · Aug 26

Estimated value

What this plugin might earn a year, and what it might sell for. Modeled from public signals; we don't see anyone's books.

Est. annual revenue

N/A

Est. acquisition value

N/A

No paid tier is visible, so we don't put a figure on revenue or sale value: that would be guessing. The install base is a real asset to an acquirer, just not one public data lets us price. A small install base leaves thin data to model from.

Details

Version
1.19.1
Last updated
12d ago
Added
2015-08-10 · 11 yrs old
Requires WP
4.7
Tested up to
7.1
Requires PHP

Recent reviews

All reviews on wp.org ↗
  1. KJA4U
    3.2y ago

    The free version is useless.

    Read on wp.org ↗
  2. cacabe
    4.5y ago

    The URL limit was reached. The Link Checker has not checked your whole website. You can buy a token for the Link Checker Professional to check up to 500’000 URLs. Thank you for wasting my time !

    Read on wp.org ↗
  3. serdasteclas
    4.9y ago

    the 500 links limit is too little for any website.

    Read on wp.org ↗
  4. Chris LOW
    5.5y ago

    EDITED REVIEW: 2021.03.10 The free plugin works, but stops before it can finish being useful. 500 links is simply not enough for a free version. It doesn’t provide a free tier that’s functional for most medium-sized websites. You end up having to buy it to actually use it. That makes this more of an advertisement than an actual plugin. I’m using a different plugin. EDITED 2021.03.11 See my reply dated today. EDIT: The free plugin only checks 500 links. This is entirely useless, even for medium-sized sites. EDIT: Plugin registration consists of link allotments, with the minimum being 25K links checked in one go for ~50 Euros. It goes up drastically from there because Marco’s server is the one doing the crawling. Most target websites are small, hosted on huge commercial properties optimized for WordPress. Additionally, crawling the local site may not be as optimal as scraping each post’s content field for links and storing results locally. My server should be the one doing the work. If my server is doing the work, you can’t expect me to pay by the link for a service my server is doing. Period. An example of a per unit subscription model that works is Mailchimp. Their servers are doing the work in a trusted secure environment so that my web host box doesn’t become a shadow spambot. Offloading that service to mailchimp is not sketchy, and their terms are more than generous for small to mid-sized website admins, with a free tier that is actually commodious. That’s not what’s happening with this plugin. It checks every link on every page, even footer links that repeat across the entire site, so if you have a link like “theme created by…”, that link counts on every page against your priced link count. Absurd. Worse, it counts a number of known valid links as broken. WordPress plugins in the .org library should offer a reasonable modicum of usefulness out of the gate. It should not seem hampered to the site admin. The pro version should offer additional capabilities that make the free plugin seem more complete. This plugin offers only a glimpse of what the paid plugin might do if you are willing to pay 45 euros minimum to check 25K links. You want to check more links? Buy more tokens. EDIT: Given the Author’s (Marco Beierer) balanced response, I’ll say this would better serve the WP community and Marco himself by: scraping post content directly for links rather than crawling, removing the tier caps — including for the free version — and then Price the pro version between $50 and $100 for a single-tier paid version that also includes image and youtube link checking. Also for the pro version, add the ability to check all site menu links, sidebar/footer/widget links, post content for custom post-type links, custom field links, etc. This would give the expected additional capability along with unrestricted link checking found in the free version. A great plugin makes the free-plugin adopter feel like they’re getting such a bargain they feel guilty for not supporting the plugin with either a donation or an upgrade to the pro version. This topic was modified 5 years, 4 months ago by Chris LOW. This topic was modified 5 years, 4 months ago by Chris LOW. This topic was modified 5 years, 4 months ago by Chris LOW. This topic was modified 5 years, 4 months ago by Chris LOW. This topic was modified 5 years, 4 months ago by Chris LOW. This topic was modified 5 years, 4 months ago by Chris LOW.

    Read on wp.org ↗
  5. ekofan
    5.7y ago

    Excellent Links plugin for checking and repairing. It helps me a lot. Added new features in recent months. Better than others, I recommend it. This topic was modified 5 years, 7 months ago by ekofan.

    Read on wp.org ↗
  6. cleciomayrink
    6.3y ago

    Verify just 500 link and very expensive the professional version. This topic was modified 6 years, 1 month ago by cleciomayrink.

    Read on wp.org ↗
  7. Gotcha
    6.6y ago

    Works but very limited with free version and so expensive for “pro”. => uninstall This topic was modified 6 years, 5 months ago by Gotcha. Reason: Stars

    Read on wp.org ↗
  8. kylomylo
    6.6y ago

    The lite one is useless, and the professional hasn’t a price ( nothing to guide about), depends on site size, I think. Very disappointed.

    Read on wp.org ↗

Latest updates

via wp.org changelog

Recent releases and news for this plugin

  1. Version 1.19.0 Release Date – 2nd June, 2026 WordPress 7 compatibility update while keeping WordPress 4.7 as the minimum supported version. Hardened settings sanitization, admin AJAX handling, and bundled jQuery compatibility for curre 1.19.0
  2. Version 1.18.7 Release Date – 14th January, 2023 Updated readme. 1.18.7
  3. Version 1.18.6 Release Date – 24th October, 2022 Added paywall. 1.18.6
  4. Version 1.18.5 Release Date – 1st August, 2022 Changed name. 1.18.5
  5. Version 1.18.4 Release Date – 1st August, 2022 Updated readme. 1.18.4
  6. Version 1.18.3 Release Date – 1st August, 2022 Added paid version info. Updated ‘Tested up to’ information. 1.18.3

Known vulnerabilities

via Wordfence Intelligence

1 disclosed vulnerability on record for this plugin, fixed in the current version. Sites on older versions stay exposed until they update.

  1. 2019-03-22 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Affects < 1.17.0 Patched in 1.17.0

Vulnerability records provided by Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. License and terms.

Behavioral tests

via WP Hive

Automated install-time checks, tested on PHP 8.1.12 · WP 7.0

Low memory footprint
Low page-speed impact
Runs on latest PHP + WP
No PHP errors
No JS errors
Activates cleanly
No resource errors
No external HTTP errors
Optimized database use
Frequently updated

Growth timeline

Install-tier crossings we have observed, and how long each tier took to outgrow

  1. 2025-11-29 5K+ → 4K+ down after 5 days in tier
  2. 2025-11-24 4K+ → 5K+ up after 1 days in tier
  3. 2025-11-23 5K+ → 4K+ down after 234 days in tier
  4. 2025-04-03 6K+ → 5K+ down after 187 days in tier
  5. 2024-09-28 7K+ → 6K+ down after 228 days in tier
  6. 2024-02-13 8K+ → 7K+ down after 229 days in tier
  7. 2023-06-29 9K+ → 8K+ down after 142 days in tier
  8. 2023-02-07 10K+ → 9K+ down

Competes with

The plugins that solve the same job, ranked by shared tags then reach, closest match first. The letter on the right is each plugin's health grade (A best, F worst).

Compare head to head →

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Link Checker: 4K+ active installs, 3.2★ (30 reviews). Plugin Pulse (WP Mayor), as of 2026-08-29. https://plugins.wpmayor.com/plugin/link-checker