Browser Extension Development ServiceChrome, Firefox, and Edge extensions that integrate into user workflows
We build browser extensions that enhance existing tools — content scripts, popup UIs, background workers, and cross-browser compatibility. From productivity tools to enterprise integrations.
Browser extensions sit inside the tools your users already use every day. They can automate tasks, inject functionality into third-party websites, synchronize data between services, and provide at-a-glance information without context switching. We build extensions for Chrome, Firefox, Edge, and Safari — from simple popup tools to complex content-manipulating extensions with backend APIs.
Manifest V3 development
Built on the latest Chrome extension platform with service workers and declarative net request.
Cross-browser support
One codebase targeting Chrome, Firefox, Edge, and Safari with platform-specific adapters.
Rich popup and sidebar UIs
React-powered extension UIs with the same component quality as your main product.
Privacy-first architecture
Minimal permissions, no unnecessary data collection, and transparent data handling for store compliance.
Who this is for
Business owners & product teams
You need software delivered — not just advice. We handle the full build from scoping through to launch, communicating in plain language throughout. No jargon, no handoff gaps, no surprise scope creep.
Engineering teams & CTOs
You need extra capacity or specialist expertise for a specific project. We embed alongside your team, follow your conventions, and ship production-quality code with tests, CI/CD, and proper documentation.
Startups & scale-ups
You're moving fast and need a team that keeps up. We've shipped MVPs in weeks and scaled systems to millions of users. Our founder is personally involved in every project — there's no junior-heavy team behind a senior face.
Not the right fit?
We're a focused agency — we take on projects where we can genuinely add value. If your project isn't a match, we'll say so early and point you in the right direction.
Challenges we solve
Manifest V3 migration
Chrome's transition to Manifest V3 changes how background scripts, content scripts, and network requests work. Many existing extensions need significant rewrites.
Cross-browser compatibility
Chrome, Firefox, and Safari have different extension APIs. Building for all three requires abstraction layers and platform-specific testing.
Web Store review process
Chrome Web Store reviews can take days and reject extensions for vague policy reasons. Experienced developers know how to navigate this.
Best practices
Request minimal permissions
Users distrust extensions that ask for broad access. Use optional permissions and explain why each is needed.
Use React for complex UIs
For anything beyond a simple popup, React with a bundler like Vite makes extension UI development much faster.
Test across all target browsers before submitting
Chrome, Firefox, and Edge each have subtle API differences. Automated cross-browser tests catch compatibility issues before users do.
Use declarative net request over web request API
Manifest V3 requires declarativeNetRequest for network interception. Design your rules upfront — the static rule model has hard limits.
Useful resources
Pricing guide
Simple single-browser extensions from $5,000. Cross-browser extensions with backend APIs and content manipulation from $15,000–50,000.
All projects start with a free 30-minute call to scope your requirements. We provide fixed-price quotes — no hourly billing surprises.
Frequently asked questions
Related technologies
Ready to start your Browser Extension Development project?
Tell us what you're building with Browser Extension Development. We'll respond within 24 hours.
We limit intake each month so every project gets the focus it deserves.