You still register unload
The dependency may be in app code, a template, a tag manager, or a third-party integration.
CHROME 154 · SEPTEMBER 22, 2026
Chrome is turning off unload. Find what breaks before your users do.
If analytics, cleanup, session, or persistence code waits for unload, that logic can stop running as Chrome completes its rollout. UnloadReady finds the obvious dependencies in your code before the failure becomes a production mystery.
100%rollout target on Sep 22
$0to run the checker
$3.99planned migration pack
analytics flushes ↗session teardown ↗cleanup logic ↗last-second persistence ↗third-party scripts ↗
THE FAILURE MODE
The code may look fine. The exit path simply stops firing.
Chrome stops calling it
The deprecation moves the default behavior toward denying unload listeners rather than waiting for your migration.
The symptom appears elsewhere
Missing analytics, stale sessions, incomplete persistence, or cleanup failures can look unrelated to the browser lifecycle change.
FREE CODE CHECK
Paste the code that runs when a user leaves.
Drop in a source file, bundled fragment, template, or tag-manager snippet. The scan looks for direct dependencies on Chrome's deprecated unload event.
PLANNED $3.99 MIGRATION PACK
Finding the listener is step one. Replacing the job correctly is the part that costs time.
The paid pack will stay deliberately small: lifecycle replacement map, migration checklist, regression cases, and a release gate. No course. No subscription. No giant browser-compatibility guide.
- Which unload jobs can move to
visibilitychangeorpagehide - When
sendBeacon()or keepalive fetch fits analytics delivery - What to test around BFCache, tab close, navigation, and mobile backgrounding
- How to verify third-party and tag-manager dependencies before rollout
SOURCE OF TRUTH