When I started building TokenPulse as a Manifest V3 extension, I knew MV3 was stricter than MV2. I...
When I started building TokenPulse as a Manifest V3 extension, I knew MV3 was stricter than MV2. I did not know how many things would break silently, produce cryptic errors, or fail only in production. Here is every significant MV3 problem I hit and how I fixed each one.
Problem 1: Inline scripts violate CSP
The first error I saw after installing my extension:
Refused to execute inline script because it violates
the following Content Security Policy directive:
A practical breakdown of building Chrome extensions natively on MV3 — service worker lifecycle, IndexedDB constraints, Alarm API,…
Google's Manifest V3 deadline is here. If you have a Chrome extension still running on MV2, you're on...
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Claude Code writes extension code fine. That was never the problem. Ask it for a content script that...
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Chrome 126+ silently broke --load-extension service workers, WXT's dev server exits on stdin EOF, and web-ext injects flags that…
