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Chrome extensions, from idea to the Chrome Web Store

Browser extensions put your product where your users already work: inside Gmail, LinkedIn, Shopify admin or any website. We build Manifest V3 extensions end to end, including the backend they connect to, and handle the Chrome Web Store review.

Typical timelines

Simple utility extension1–3 weeks
Extension + backend API4–8 weeks
Full SaaS companion8–12 weeks

Exact timeline and a fixed quote after a free 30-minute call.

What we offer

Our Chrome Extension Development services

Custom extension development

Popups, side panels and content scripts built for your exact use case.

Manifest V2 to V3 migration

Move older extensions to Manifest V3 so they keep working and stay listed in the store.

SaaS companion extensions

Extensions that share login with your web app and sync data with your backend.

Automation & data tools

Tools that fill forms, collect data from pages, or automate repetitive browser tasks.

Edge & Firefox versions

The same extension published to Microsoft Edge Add-ons and Firefox with minimal changes.

Store publishing & updates

Listing, screenshots, privacy policy, permission justifications and version releases.

Why DeviStack

Why choose us for Chrome Extension Development

100+ projects delivered over 10+ years, for startups and established companies in India and abroad.

Discuss your project

Real MV3 experience

We have shipped Manifest V3 extensions to production, so we know its limits from real use, not just documentation.

MV3 expertise

Service workers, alarms, storage, scripting and declarativeNetRequest, used the right way.

Ready for review

Minimal permissions and clear justifications so store reviews pass faster.

Backend included

APIs, user accounts and dashboards built by the same team that builds the extension.

Our process

How we deliver Chrome Extension Development projects

Feasibility check

We confirm what the browser and the target websites allow before you commit to a build.

Architecture & UX

Popup, side panel or in-page UI, permissions and data flow, designed up front.

Development

Extension and backend built in parallel, with test builds you can load in your browser.

Testing

Tested across target websites, Chrome versions, and logged-in and logged-out states.

Publishing & updates

Web Store submission, review follow-up, and versioned updates after launch.

Technologies

Tools and technologies we use

Extension

Manifest V3TypeScriptJavaScriptService workers

UI

ReactViteTailwind CSSShadow DOM

Chrome APIs

storagealarmsscriptingdeclarativeNetRequest

Backend

.NET 8Node.jsFirebaseREST APIs
FAQ

Chrome Extension Development: common questions

How long does Chrome Web Store review take?

Usually a few days. Extensions that ask for broad permissions can take longer, which is why we keep permissions to the minimum.

Will my Manifest V2 extension stop working?

Chrome has phased out Manifest V2. If your extension still uses it, it needs to be migrated to stay installable.

Can the extension work in Edge and Firefox?

Edge runs Chrome extensions with almost no changes. Firefox needs small adjustments, which we can handle in the same project.

Can you build an extension for our existing SaaS?

Yes. We connect it to your existing API and login so users sign in once and their data stays in sync.

Start your Chrome Extension Development project

Tell us what you want to build. You'll get a written plan and a fixed quote within 48 hours, free of charge.