Chrome Browser Extension Development Company

A focused single-purpose extension runs $6,000–$15,000. An extension with authentication, a backend, and syncing across devices runs $15,000–$45,000. Enterprise extensions with SSO, admin policy configuration, and managed deployment run $40,000–$100,000. The largest cost driver is rarely the UI — it is backend integration and Web Store permission review.

Manifest V3 is Chrome's current extension platform. It replaced persistent background pages with ephemeral service workers and restricted remote code execution, which broke a lot of V2 extensions outright. Chrome has phased out V2, so any extension still on it is either already disabled or will be. If you are unsure which platform yours targets, we can check in an hour — it is a single field in the manifest.

Typically a few business days, but extensions requesting broad host permissions or handling sensitive user data routinely take two to three weeks and often come back with questions. The fastest path is requesting the narrowest permissions that actually work and writing a clear justification for each one — we design permission scope with review in mind rather than treating submission as an afterthought.

Yes. Edge, Brave, Opera, and Arc all run Chromium extensions with essentially no changes, so those come nearly free. Firefox uses a similar WebExtensions API and usually needs modest adaptation. Safari requires wrapping the extension in a macOS app and distributing through the App Store, which is a genuinely separate workstream we scope on its own.

Yes. Extensions can be published as unlisted, or force-installed across your organization through Google Workspace admin policy or Windows Group Policy without ever appearing in public Web Store search. This is the standard route for internal tooling, and it also skips the public-review friction that slows down listed extensions.