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SEO · head to head

Lighthouse vs Yoast SEO

Lighthouse logo

Lighthouse

SEO

Audit web page performance and quality

From
Free
Rated
-
Full reviewWebsite
Yoast SEO logo

Yoast SEO

SEO

The longest-established WordPress SEO plugin, free core with a flat-rate Premium tier

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Lighthouse performance scores vary significantly due to A/B testing, device differences, browser extensions, and antivirus software affecting results; Yoast SEO premium is licensed per site, so an agency or publisher managing many WordPress installs pays linearly per site with no volume discount tier published, unlike Rank Math's site-count-bundled plans.
  • They diverge on capability: Lighthouse covers Performance scoring, Yoast SEO covers Readability and SEO analysis.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Lighthouse and Yoast SEO actually diverge.

Attributes where Lighthouse and Yoast SEO differ
AttributeLighthouseYoast SEO
Pricing modelfreeFreemium, per site per year
PlatformsChrome, EdgeWeb
Founded1998Unknown

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (SEO).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Lighthouse

  • Performance scoring
  • Accessibility audit
  • SEO check
  • PWA validation
  • Chrome support
  • Edge support

Only in Yoast SEO

  • Readability and SEO analysis
  • Redirect manager
  • Multi-keyphrase optimisation
  • Bundled add-ons
  • AI-assisted metadata
  • Google Docs add-on

What people use each for

The jobs each tool is most often brought in to do.

Lighthouse

  • Performance auditing to identify page loading speed improvementsnot Yoast SEO
  • Accessibility compliance checking for users with disabilitiesnot Yoast SEO
  • SEO optimization verification for search engine compatibilitynot Yoast SEO
  • Security and best practices scanning for code healthnot Yoast SEO
  • Progressive web app validation and CI/CD pipeline integrationnot Yoast SEO

Yoast SEO

  • A WordPress site owner who wants a predictable flat annual price with no renewal surprise, unlike some competitor pricing patternsnot Lighthouse
  • A multi-site publisher needing Local, Video and News SEO functionality bundled rather than bought as three separate add-onsnot Lighthouse
  • A small blog that can run indefinitely on the free tier without hitting a feature wall that forces an upgradenot Lighthouse
  • A content team wanting AI-assisted bulk metadata generation to clear a backlog of missing titles and descriptionsnot Lighthouse

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Lighthouse

  • Performance scores vary significantly due to A/B testing, device differences, browser extensions, and antivirus software affecting results
  • Limited to metrics that contribute to scores; Opportunities and Diagnostics don't directly impact scoring
  • Diminishing returns above 0.96 score, making perfect 100 scores extremely challenging
  • Scores based on HTTP Archive data which may not reflect all performance scenarios

Yoast SEO

  • Premium is licensed per site, so an agency or publisher managing many WordPress installs pays linearly per site with no volume discount tier published, unlike Rank Math's site-count-bundled plans.
  • The free tier's schema output is more basic than Rank Math's free tier, which ships more predefined schema types at no cost.
  • There is no rank tracking feature at all, free or paid, so any team wanting to monitor rankings needs an entirely separate tool regardless of Yoast tier.
  • Some previously free features have migrated behind Premium over successive releases, so long-time users have seen the free-to-paid boundary move against them.
  • The AI-assisted content and metadata features are newer additions and reviewers note they are less mature than dedicated AI content tools such as Surfer SEO or Frase.

Pricing, plan by plan

Lighthouse

Free
  • FreeFree
    • Performance audit
    • Accessibility check
    • SEO analysis

Yoast SEO

Free
  • FreeFree
    • SEO and readability analysis
    • XML sitemaps and basic schema output
    • Google Search Console integration
  • Premium$118.8/year
    • Flat rate with no renewal price increase, per site
    • Redirect manager and multi-keyphrase optimisation
    • Local, Video and News SEO plugins included

Which should you pick?

Choose Lighthouse if

  • You need performance scoring.
  • You want to start without paying.
  • You work on Chrome, Edge.
  • You also want accessibility audit.
Lighthouse review

Choose Yoast SEO if

  • You need readability and seo analysis.
  • You want to start without paying.
  • You also want redirect manager.
Yoast SEO review

Questions people ask

Is Lighthouse or Yoast SEO better?
Neither clearly leads. Lighthouse starts at Free and Yoast SEO at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Lighthouse or Yoast SEO?
Lighthouse starts at Free and Yoast SEO at Free.
Does Lighthouse or Yoast SEO run on more platforms?
Lighthouse runs on Chrome, Edge. Yoast SEO runs on Web.
Can I use Lighthouse for free?
Both have a free tier, so you can try either at no cost before committing.
What is Lighthouse best used for?
Lighthouse is most often used for performance auditing to identify page loading speed improvements, accessibility compliance checking for users with disabilities, seo optimization verification for search engine compatibility, security and best practices scanning for code health. Of those, performance auditing to identify page loading speed improvements and accessibility compliance checking for users with disabilities are not what Yoast SEO is typically brought in for.
What can Lighthouse do that Yoast SEO cannot?
Lighthouse covers Performance scoring, Accessibility audit, SEO check, PWA validation. Yoast SEO covers Readability and SEO analysis, Redirect manager, Multi-keyphrase optimisation, Bundled add-ons.

Answered from the vendors’ own pages

Lighthouse: Is Lighthouse free?

Yes. Lighthouse is completely free and open-source. It is developed by Google and integrated into Chrome DevTools, PageSpeed Insights, and available as a command-line tool. There are no licensing fees or premium tiers.

Source
Yoast SEO: Does the price go up after the first year?

No. Yoast charges the same flat 118.80 US dollars a year per site every year, unlike some competitors that discount the first year and raise the renewal price.

Lighthouse: Can I run Lighthouse offline?

Yes. Lighthouse can run offline in multiple ways: through Chrome DevTools (built into Chrome), as a command-line tool (Node.js), or as a Node.js module integrated into your build process. You do not need an internet connection after installing the tool.

Source
Yoast SEO: Is the free version usable long-term, or is it a trial?

It is a genuinely usable free tier; many small sites run on it indefinitely without ever needing Premium.

Lighthouse: What pages can Lighthouse audit?

Lighthouse can audit any web page, including pages that require authentication. This is an advantage over some alternative tools that cannot test behind login screens. You can run audits on public pages or authenticated pages via command-line with custom headers.

Source
Yoast SEO: Can one Premium licence cover multiple sites?

No. Premium is licensed per site; multiple sites each need their own licence.

Lighthouse: Can Lighthouse prevent performance regression during development?

Yes. Lighthouse CI is available to prevent performance degradation during development cycles. You can integrate Lighthouse CI into your continuous integration pipeline to automatically audit pages on every commit and fail builds if performance metrics fall below thresholds you define.

Source
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