PWA Compatibility Checker
Paste source to check for common manifest and service-worker signals without claiming browser support.
A QUICK WALKTHROUGH
How to use this tool
- Paste manifest or service-worker source text.
- Run the local checklist to find the signals it recognizes.
- Use the findings as prompts for browser-specific testing.
Source inspection only
No pages, browsers, or external compatibility data are fetched. The checker reads pasted source locally.
No compatibility matrix
This is not a cross-browser support verdict. Browser support requires a maintained, versioned dataset and real browser testing.
GOOD TO KNOW
Common questions
Does it prove my PWA works everywhere?
No. It reports source signals only.
Does it fetch my site?
No. It checks the source text you paste.
What does “not found” mean?
Only that the signal was not found in the pasted source; it does not prove the feature is unsupported.