Browser Extension Development Company
RaftLabs develops Chrome, Edge, Firefox, and Safari extensions for workflows that must act inside a browser tab or across approved sites. The first release bounds one job, its host access, data handling, backend calls, store listing, and review path before features widen the permission request.
Bring the problem, the current workflow, or the existing code. We reply with a practical next step within one business day.
The brief
Good software decisions begin with the constraint, not a list of features or a preferred technology.
Does the extension need broad page access without a clear explanation users or reviewers can verify?
Is a browser workflow being forced into a separate dashboard that loses the user's current context?
Plain answer
A browser extension development company builds software that runs inside the browser with explicit permissions, page access, storage, background work, and store review constraints. RaftLabs develops Chrome, Edge, Firefox, and Safari extensions. A focused one-browser release starts at $15,000 and usually takes 4 to 6 weeks.
An extension may need to read one field on one site, yet an early prototype asks for access to every URL. That shortcut becomes a trust problem for users and a review problem for the store.
Start with the smallest in-page job. The permission request, code boundary, data path, listing copy, and user task should tell the same story before a second browser or feature is added.
First-release planning
RaftLabs built and shipped Draftly, an AI-assisted LinkedIn product with a Chrome extension, then sold the product in 2024. That first-party experience supports permission, page-integration, and product-lifecycle decisions; it does not guarantee approval or commercial results for another extension.
Choose a web app when the product can own its interface without reading or changing another site.
The core job depends on an approved page, selected text, browser state, or browser API.
One purpose and its required host access can be explained to a user in plain language.
The team can own store accounts, policy responses, support, and future browser changes.
The same workflow works in a normal web application without page access.
The business model depends on hidden collection, automation, or permissions users would not expect.
Guaranteed store approval or a permanent page DOM is required.
Focused scope
| Browser extension | Web application | |
|---|---|---|
| Best fit | Assist inside approved browser pages | Own the full workflow and interface |
| Access | Browser APIs and declared host permissions | Only the application's own origin and integrations |
| External dependency | Page DOM and browser-store policy | Browser standards and hosting platform |
| Distribution | Store or enterprise-managed installation | URL, account, and normal deployment |
| Starting price | $15K for one browser | Scoped against the application workflow |
Use web application development when the product owns its screen. Use an extension when leaving the current page breaks the workflow or browser capabilities are essential. A companion web dashboard may still fit account, billing, administration, or history.
Delivery
Four steps keep product behaviour, permissions, and listing claims aligned.
Name the user task, supported pages, account state, data handled, and reason the workflow must live in the browser. Record the first browser and features outside the release.
Choose content scripts, service worker, storage, backend, authentication, and the narrowest permissions that support the job. Review disclosures before development hardens the wrong boundary.
Develop the workflow, exercise page changes and failures, test upgrades, and verify data handling across clean, existing, and restricted profiles on the first browser.
Align the listing, disclosures, screenshots, permission justifications, release package, and support runbook before submission. Respond to reviewer feedback without promising approval.
Scope and price
Begin with one job, one permission boundary, and one store package before expanding the browser matrix.
Store accounts, Apple membership, model APIs, backend hosting, and other third-party costs remain separate unless the proposal includes them.
Starting investment
Starts at $15K
A first release usually takes 4 to 6 weeks before external review. Cross-browser support, Safari, backend services, and sensitive data increase scope.
Permissions map to behaviour
The scope records why each permission is needed, which pages it covers, what data moves, and how the listing discloses it.
No approval promise
RaftLabs prepares and supports submission, while browser stores retain control of policy, review duration, rejection, and approval.
Related client platforms
Web application development
Build a standalone browser product that owns its interface, data flow, deployment, and user account. It needs no page-level extension access.
Progressive web app development
Add installability, offline behaviour, and supported web notifications without extension page access.
Desktop app development
Choose an installed client when files, devices, background work, or deeper OS integration define the product.
Build an extension when the workflow must read or change an approved page, respond to navigation, use browser APIs, or assist without moving the user away from current context. Use a web app when the workflow owns its interface and data. An extension can use a backend, but it should have one clear browser-specific purpose.
Chrome and Edge usually share most WebExtensions code. Firefox often needs API, permission, and test adjustments. Safari requires an Apple project wrapper, signing, and its own distribution path. Shared code is useful, but store policy, browser APIs, background execution, and review still differ. We validate one browser before expanding the matrix.
No. Browser stores control review, policy interpretation, timing, and rejection. RaftLabs can design against current requirements, justify permissions, align disclosures and listing claims with behaviour, prepare the package, and respond to reviewer feedback. Approval and review duration remain external dependencies and are not guaranteed.
The scope should minimize page access, permissions, stored data, and backend transfer. Tokens belong in appropriate browser or server storage, logs need redaction, and disclosures must match behaviour. The client remains responsible for legal and privacy requirements; RaftLabs implements agreed controls but does not provide legal advice or certify compliance.
A focused one-browser extension with one core job and store package starts at $15,000 and usually takes 4 to 6 weeks before external review. Cross-browser differences, Safari packaging, complex page behaviour, authentication, backend services, AI calls, enterprise deployment, and sensitive data increase scope. Store accounts and third-party services remain separate.
Work with us
We will test whether an extension is justified, narrow its page access and data path, and scope the smallest store-ready release.