Manifest V3 Migration & Hardening
Keep features intact while aligning with MV3 constraints and store policies.
Common migration risks
- Background page → service worker regressions
- webRequest reliance vs declarativeNetRequest limits
- Storage/alarms/offscreen doc patterns
- Permission bloat and privacy labels
Our approach
- Audit & Parity Map: features, permissions, APIs, risk list
- Refactor Plan: service worker lifecycle, messaging, DNR rules
- Harden & Test: quotas, performance, error handling
- Publish: assets, disclosures, reviewer Q&A
Deliverables
Audit report, migration plan, refactored code, tests, telemetry, publishing package.
Typical timeline
1
Audit
3–5 days
2
Migration sprints
1–4+
3
Review & rollout
3–10 days (reviewer-dependent)
FAQs
Will DNR replace our blocking logic?
We map rules to what’s feasible; where needed we redesign flows.
Do you support Edge/Firefox?
Yes—porting options available.
Will performance degrade?
We budget and test for startup/runtime performance.