v13.4.0 (#17073)

Author: connorjclark

changelog.md

@@ -1,3 +1,75 @@
+<a name="13.4.0"></a>
+# 13.4.0 (2026-06-09)
+[Full Changelog](https://github.com/GoogleChrome/lighthouse/compare/v13.3.0...v13.4.0)
+
+We expect this release to ship in the DevTools of [Chrome 151](https://chromiumdash.appspot.com/schedule), and to PageSpeed Insights within 2 weeks.
+
+## New contributors
+
+Thanks to our new contributors 👽🐷🐰🐯🐻! 
+
+- Thomas Steiner @tomayac
+- KS Nithin @Nithin0620
+- Emanuele @emazack
+- Kirtikumar Anandrao Ramchandani @KirtiRamchandani
+- Rin @RinZ27
+- Michael Hablich @natorion
+
+## Core
+
+* canonical: improve validation for invalid URLs ([#16765](https://github.com/GoogleChrome/lighthouse/pull/16765))
+* llms-txt: allow leading whitespace for header check ([#17057](https://github.com/GoogleChrome/lighthouse/pull/17057))
+* geolocation-on-start: mention `geolocation` element ([#16835](https://github.com/GoogleChrome/lighthouse/pull/16835))
+* add public Lighthouse types entrypoint ([#17028](https://github.com/GoogleChrome/lighthouse/pull/17028))
+* match scripts to network requests using frameId ([#16774](https://github.com/GoogleChrome/lighthouse/pull/16774))
+* config: import LH types ([#17048](https://github.com/GoogleChrome/lighthouse/pull/17048))
+* driver: add ExecutionContext.evaluateOnObject ([#17050](https://github.com/GoogleChrome/lighthouse/pull/17050))
+* driver: check if usage data exists before using ([#17033](https://github.com/GoogleChrome/lighthouse/pull/17033))
+
+## Report
+
+* fix performance gauge label, improve load animation ([#17045](https://github.com/GoogleChrome/lighthouse/pull/17045))
+* decouple link creation from link details rendering ([#17049](https://github.com/GoogleChrome/lighthouse/pull/17049))
+* viewer: persist dark mode when when changing langauge ([#17063](https://github.com/GoogleChrome/lighthouse/pull/17063))
+
+## Deps
+
+* upgrade deps ([#17070](https://github.com/GoogleChrome/lighthouse/pull/17070))
+* upgrade typescript to 6.0.3 ([#17060](https://github.com/GoogleChrome/lighthouse/pull/17060))
+* upgrade terser to 5.48.0 ([#17059](https://github.com/GoogleChrome/lighthouse/pull/17059))
+* upgrade esbuild to 0.28.0 ([#17058](https://github.com/GoogleChrome/lighthouse/pull/17058))
+* upgrade trace_engine to 0.0.65 ([#17046](https://github.com/GoogleChrome/lighthouse/pull/17046))
+* upgrade puppeteer to 25.0.2 ([#17019](https://github.com/GoogleChrome/lighthouse/pull/17019))
+
+## Clients
+
+* viewer: prevent toast showing on load ([#17069](https://github.com/GoogleChrome/lighthouse/pull/17069))
+* viewer: clear github auth token on 401 error ([#17064](https://github.com/GoogleChrome/lighthouse/pull/17064))
+* viewer: disable agentic-browsing in PSI api call ([#17041](https://github.com/GoogleChrome/lighthouse/pull/17041))
+
+## I18n
+
+* import ([#17071](https://github.com/GoogleChrome/lighthouse/pull/17071))
+
+## Docs
+
+* add agentic web issue template ([#17020](https://github.com/GoogleChrome/lighthouse/pull/17020))
+
+## Tests
+
+* exclude origin-isolation-coop-present smoke test ([#17072](https://github.com/GoogleChrome/lighthouse/pull/17072))
+* remove accidental .only ([#17042](https://github.com/GoogleChrome/lighthouse/pull/17042))
+* remove unused c8 ([#16845](https://github.com/GoogleChrome/lighthouse/pull/16845))
+* llms-txt: add coverage for network failure and heading edge cases ([#17040](https://github.com/GoogleChrome/lighthouse/pull/17040))
+* viewer: update psi key ([#17037](https://github.com/GoogleChrome/lighthouse/pull/17037))
+
+## Misc
+
+* migrate typescript moduleResolution to bundler ([#17061](https://github.com/GoogleChrome/lighthouse/pull/17061))
+* build: generate subset of web-features data ([#17047](https://github.com/GoogleChrome/lighthouse/pull/17047))
+* ci: add Node 26 to unit matrix ([#17062](https://github.com/GoogleChrome/lighthouse/pull/17062))
+* ci: bump actions/upload-artifact from 4 to 7 ([#16938](https://github.com/GoogleChrome/lighthouse/pull/16938))
+
  <a name="13.3.0"></a>
 # 13.3.0 (2026-05-07)
 [Full Changelog](https://github.com/GoogleChrome/lighthouse/compare/v13.2.0...v13.3.0)
@@ -150,14 +222,16 @@ We expect this release to ship in the DevTools of [Chrome 146](https://chromiumd
 
 We expect this release to ship in the DevTools of [Chrome 146](https://chromiumdash.appspot.com/schedule), and to PageSpeed Insights within 2 weeks.
 
+## New contributors
+
 Thanks to our new contributors 👽🐷🐰🐯🐻!
 
-Alex Rudenko @OrKoN
-Lusa Zhan @lusayaa
-Atakan Demircioğlu @atakde
-Mimori @Mimori256
-Denis @filchakov
-_ @Lulucmy
+- Alex Rudenko @OrKoN
+- Lusa Zhan @lusayaa
+- Atakan Demircioğlu @atakde
+- Mimori @Mimori256
+- Denis @filchakov
+- _ @Lulucmy
 
 ## Core
 

core/test/fixtures/user-flows/reports/sample-flow-result.json

@@ -2,7 +2,7 @@
   "steps": [
     {
       "lhr": {
-        "lighthouseVersion": "13.3.0",
+        "lighthouseVersion": "13.4.0",
         "requestedUrl": "https://www.mikescerealshack.co/",
         "mainDocumentUrl": "https://www.mikescerealshack.co/",
         "finalDisplayedUrl": "https://www.mikescerealshack.co/",
@@ -8147,7 +8147,7 @@
     },
     {
       "lhr": {
-        "lighthouseVersion": "13.3.0",
+        "lighthouseVersion": "13.4.0",
         "finalDisplayedUrl": "https://www.mikescerealshack.co/search?q=call+of+duty",
         "fetchTime": "2025-02-05T01:31:50.141Z",
         "gatherMode": "timespan",
@@ -11625,7 +11625,7 @@
     },
     {
       "lhr": {
-        "lighthouseVersion": "13.3.0",
+        "lighthouseVersion": "13.4.0",
         "finalDisplayedUrl": "https://www.mikescerealshack.co/search?q=call+of+duty",
         "fetchTime": "2025-02-05T01:32:00.108Z",
         "gatherMode": "snapshot",
@@ -17598,7 +17598,7 @@
     },
     {
       "lhr": {
-        "lighthouseVersion": "13.3.0",
+        "lighthouseVersion": "13.4.0",
         "requestedUrl": "https://www.mikescerealshack.co/corrections",
         "mainDocumentUrl": "https://www.mikescerealshack.co/corrections",
         "finalDisplayedUrl": "https://www.mikescerealshack.co/corrections",

core/test/results/sample_v2.json

@@ -1,5 +1,5 @@
 {
-  "lighthouseVersion": "13.3.0",
+  "lighthouseVersion": "13.4.0",
   "requestedUrl": "http://localhost:10200/dobetterweb/dbw_tester.html",
   "mainDocumentUrl": "http://localhost:10200/dobetterweb/dbw_tester.html",
   "finalDisplayedUrl": "http://localhost:10200/dobetterweb/dbw_tester.html",

docs/plugins.md

@@ -61,10 +61,10 @@ A Lighthouse plugin is just a node module with a name that starts with `lighthou
   "type": "module",
   "main": "plugin.js",
   "peerDependencies": {
-    "lighthouse": "^13.3.0"
+    "lighthouse": "^13.4.0"
   },
   "devDependencies": {
-    "lighthouse": "^13.3.0"
+    "lighthouse": "^13.4.0"
   }
 }
 ```

docs/recipes/lighthouse-plugin-example/package.json

@@ -4,7 +4,7 @@
   "type": "module",
   "main": "./plugin.js",
   "peerDependencies": {
-    "lighthouse": "^13.3.0"
+    "lighthouse": "^13.4.0"
   },
   "devDependencies": {
     "lighthouse": "^8.6.0"

package.json

@@ -1,7 +1,7 @@
 {
   "name": "lighthouse",
   "type": "module",
-  "version": "13.3.0",
+  "version": "13.4.0",
   "description": "Automated auditing, performance metrics, and best practices for the web.",
   "main": "./core/index.js",
   "bin": {

third-party/devtools-tests/e2e/lighthouse/navigation.test.ts

@@ -79,7 +79,7 @@ describe('Navigation', function() {
       // 1 refresh after auditing to reset state
       assert.strictEqual(numNavigations, 5);
 
-      assert.strictEqual(lhr.lighthouseVersion, '13.3.0');
+      assert.strictEqual(lhr.lighthouseVersion, '13.4.0');
       assert.match(lhr.finalUrl, /^https:\/\/localhost:[0-9]+\/test\/e2e\/resources\/lighthouse\/hello.html/);
 
       assert.strictEqual(lhr.configSettings.throttlingMethod, 'simulate');