Technical fix guide
Service Worker Registration Issue
Service worker registration detected but may have scope or caching issues that cause stale content or broken offline behavior.
Issue ID: TECH-SW-001
Severity: advisory
Impact: Low
Effort: M
Use this article when
- You need deeper remediation guidance than the issue card can show.
- You want CMS-specific steps before handing the fix to a developer.
- You want a repeatable re-check path after shipping the change.
What this issue is
Service worker registration detected but may have scope or caching issues that cause stale content or broken offline behavior.
Why it matters
Service worker registration detected but may have scope or caching issues that cause stale content or broken offline behavior. This affects crawlability, rendering, and whether the site can be interpreted correctly by search engines.
How we detect it
- FreeSiteAudit flags this issue when the rule for TECH-SW-001 fails and the page evidence points to Dom body.
- You can usually confirm this by checking the page source or the relevant page settings inside your CMS.
Evidence examples
Check the affected page source, rendered output, or relevant CMS setting to confirm the missing or incorrect element.
How to fix it
- 1Review service worker scope and caching strategy
- 2Ensure cache-first strategies include proper cache invalidation
- 3Test offline behavior and stale content scenarios
How to re-check it
- Test in Chrome DevTools Application tab under Service Workers
Related tools
This issue is best verified with the full FreeSiteAudit crawl rather than a single-point mini tool.