What's new in Lighthouse 13

Published: Oct 10, 2025

Lighthouse is a website auditing tool that helps developers with metrics, insights and diagnostics to improve the user experience of their sites.

Lighthouse 13 is available immediately on the command line through npm, in Chrome Canary, and will be available in PageSpeed Insights within the next week. It will land in Chrome stable in Chrome 143.

See the full list of changes in the 13.0 changelog.

Removal of various performance audits which have been replaced by newer insights

As announced previously we have consolidated our Lighthouse performance audits and DevTools Performance panel insights into common performance insights available in both tools.

In Lighthouse 12 we switched the default view in Lighthouse reports to display these insights and in Lighthouse 13 we are removing the old audits from both the report and the underlying JSON.

We are thankful to the community for the feedback that helped improve the Insights allowing for a smoother change over.

The following audits have been replaced from Lighthouse 13 onwards and the replaced audits are no longer available as of this version:

New insight audit id Replacing audit id(s)
cls-culprits-insight layout-shifts
document-latency-insight redirects
server-response-time
uses-text-compression
dom-size-insight dom-size
duplicated-javascript-insight duplicated-javascript
font-display-insight font-display
image-delivery-insight modern-image-formats
uses-optimized-images
efficient-animated-content
uses-responsive-images
interaction-to-next-paint-insight work-during-interaction
lcp-discovery-insight prioritize-lcp-image
lcp-lazy-loaded
lcp-phases-insight largest-contentful-paint-element
legacy-javascript-insight legacy-javascript
modern-http-insight uses-http2
network-dependency-tree-insight critical-request-chains
uses-rel-preconnect
render-blocking-insight render-blocking-resources
third-parties-insight third-party-summary
use-cache-insight uses-long-cache-ttl
viewport-insight viewport
Renamed and consolidated audits

Removed audits

In addition to the aforementioned replacements, the following audits have been removed with no replacements as it was felt these no longer served useful purposes:

Removed audits Reason for removal
first-meaningful-paint Older metric that is no longer recommended (replaced by LCP).
font-size While small fonts is a legibility issue, there are no signals that this remains an SEO concern today. Additionally, this audit was very expensive to run and maintain.
no-document-write Rarely an issue in first-party scripts these days, and it is inactionable for third-party scripts that use this.
offscreen-images Offscreen images are already deprioritized by the browser so while lazy loading helps reduce bandwidth, it is unlikely to have an impact on what Lighthouse measures.
preload-fonts Not enabled due to risks of over recommending.
third-party-facades This audit covers limited facades and some developers expressed concern using non-affiliated third-party facades. Ultimately, we would prefer the third-parties improve their offerings rather than work around them.
uses-passive-event-listeners Rarely an issue in first-party scripts these days, and it is inactionable for third-party scripts that use this.
uses-rel-preload Not enabled due to risks of over recommending.
Removed audits

Documentation for the new insights audits

We have documented the new audits and linked from the new Lighthouse reports. The old documentation will be kept around for the foreseeable future so prior versions of Lighthouse can still link to them.

Other changes

Lighthouse 13 requires Node 22.19 or higher.

Running Lighthouse

Lighthouse is available in Chrome DevTools, npm (as a Node module and a CLI tool), and as a browser extension (in Chrome and Firefox). It also powers several Google services, including PageSpeed Insights.

To try the Lighthouse Node CLI, use the following commands:

npm install -g lighthouse
lighthouse https://www.example.com --view

Get in touch with the Lighthouse team

To discuss the new features, changes in the Lighthouse 13 release, or anything else related to Lighthouse: