Chrome Extension Development Services

Manifest V3 is the current Chrome extension architecture that defines how modern extensions declare permissions, service workers, content scripts, extension pages, APIs, and security requirements. See Google What is Manifest V3 overview and the Chrome Extensions documentation.

Yes, and it is now urgent. Chrome 138 disabled Manifest V2 extensions for all users in July 2025, Chrome 139 removed the enterprise policy that kept them running, and the remaining Manifest V2 extensions were removed from the Chrome Web Store on August 31, 2026 (Google’s Manifest V2 support timeline). We migrate the manifest, move background pages to a service worker, replace blocking web requests with declarativeNetRequest, bundle any remotely hosted code, and re-check permissions and Chrome Web Store readiness.

Yes. We can prepare extension packages, listing copy, screenshots, icons, metadata, privacy disclosures, permissions explanations, and support the Chrome Web Store review process.

Yes. We build internal Chrome extensions for organizations, including managed deployment considerations for enterprise environments.

Yes. Extensions can connect to SaaS platforms through REST APIs, GraphQL, OAuth, webhooks, embedded UI, CRM workflows, dashboards, and authenticated user accounts.

Yes. We build AI extensions that integrate OpenAI, Gemini, Claude, or custom AI services for chat, summarization, translation, writing assistance, accessibility suggestions, and workflow automation.

Yes. We support secure authentication flows, OAuth integrations, token handling, API access, and user state management for browser extension products.

Yes. We can build Chrome side panel extensions with accessible layouts, responsive UI, keyboard support, and integration with extension background logic.

Yes. We build extensions for autofill, form automation, page interactions, data extraction, workflow automation, and CRM or SaaS integrations.

Yes. We provide compatibility updates, Chrome API support, policy updates, feature development, bug fixes, performance improvements, and store release support.

Yes. Most Manifest V3 code can be shared across Chrome, Microsoft Edge and Firefox because they all use the WebExtensions model. Edge Add-ons has required Manifest V3 for new extensions since July 2022, and Firefox has supported Manifest V3 since Firefox 109, with some differences (Firefox uses event pages instead of service workers, for example). We build a shared core with small browser-specific layers and can publish to the Chrome Web Store, Microsoft Edge Add-ons and Firefox Add-ons. See the Firefox Manifest V3 guide.

It depends on how many interfaces the extension has (popup, side panel, options page, injected UI), the sites it works on, login, integrations, AI features and testing. We give you a written scope and timeline after a short discovery call. Chrome Web Store review time is outside anyone’s control, so we plan launch dates with a buffer and prepare permission justifications and privacy disclosures in advance to reduce the risk of rejection. Share your idea to get a timeline.

We use Manifest V3, JavaScript, TypeScript, React, Vite, Tailwind CSS, Chrome Extension APIs, Firebase, Supabase, Node.js, REST APIs, and GraphQL where appropriate.

Yes. We build accessible toolbar popup interfaces with keyboard navigation, focus management, forms, buttons, state updates, and responsive layouts.

Yes. We build settings and options pages for account preferences, feature configuration, integrations, permissions guidance, and extension controls.

Yes. Content scripts can analyze, enhance, modify, or inject UI into webpages, subject to permissions, browser rules, website behavior, and user privacy expectations.

Yes. We can add context menu actions for selected text, links, pages, images, forms, and workflow-specific commands.

Yes. Extensions can support keyboard shortcuts where appropriate, and those shortcuts should be documented, configurable when possible, and tested for conflicts.

Yes. Extensions can send browser notifications, scheduled reminders, background task updates, and status alerts when designed with appropriate permissions and user expectations.

We use minimal permissions, secure authentication, bundled code, safe storage choices, least-privilege architecture, careful messaging, privacy-conscious data handling, and Chrome Web Store policy alignment.

Yes. We build extension popups, side panels, options pages, injected UI, and forms with keyboard navigation, screen reader support, visible focus, semantic HTML, and proper ARIA usage aligned with WCAG 2.2 and the WAI-ARIA APG.

Yes. We can audit existing extension UI, popup flows, side panels, options pages, injected overlays, forms, keyboard behavior, and screen reader support.

Yes. We can review permissions, authentication, storage, message passing, content scripts, third-party scripts, data handling, and privacy-related risks.

Yes. We build developer utilities, debugging tools, accessibility testing tools, QA helpers, API tools, and workflow accelerators.

Yes. We build CRM extensions, prospecting tools, sales enablement workflows, data capture, account research helpers, and SaaS companion tools.

Yes. We can build browser-based accessibility testing tools, WCAG checkers, developer utilities, audit helpers, and accessibility evaluation workflows.

Manifest V3 changes background processing, permissions, extension APIs, service worker behavior, remotely hosted code rules, and security expectations compared with older Manifest V2 extensions.

Yes. We can review rejection reasons, update permissions, metadata, privacy disclosures, code behavior, policy compliance, and resubmit store-ready builds.

Every extension is quoted after scoping, because the cost depends on the interfaces, integrations, AI features, browsers and maintenance you need. Send your idea through our project form and we reply with a scoped estimate. If you only need an accessibility review of an existing extension or the web app behind it, start with a free accessibility needs assessment. Our audits are fixed-price: $500 Quick Audit and $2,000 Complete Audit (see pricing).

No. Chrome 138 disabled Manifest V2 extensions for all users in July 2025, and Chrome 139 removed the enterprise policy that kept them running. On August 31, 2026 the remaining Manifest V2 extensions were removed from the Chrome Web Store, so they can no longer be installed fresh or updated (Chrome for Developers). Any extension you sell or maintain must be Manifest V3.

No. In Manifest V3 all extension logic must be part of the package, and Chrome Web Store policy does not allow loading and running JavaScript from your server or a CDN. You can still load remote configuration (for example a JSON file that turns features on), call your own web service or API, or run remote code inside a sandboxed iframe. We plan this architecture before development starts (Google’s guidance).

Yes. We build and maintain the free HalfAccessible Accessibility Toolkit, a WCAG testing extension with a target size checker (WCAG 2.5.8), text spacing checks, axe audits, an HTML copier and DOM insights. It carries the Chrome Web Store Featured badge, is rated 5.0 and had 2,000 users as of October 2026. See it with our other free accessibility tools.

A short description of what the extension should do, who will use it (public Chrome Web Store users or employees), which websites or apps it works with, any APIs, login or AI services involved, the browsers you need (Chrome, Edge, Firefox) and your launch date. Share it through our contact form. Designs, an existing codebase or a Manifest V2 extension to migrate help us quote faster.

Book the free 30-minute call if you are exploring an extension idea, need a quote, or want to understand where you stand before a project starts. Book the $100 one-hour consultation when you need a hands-on technical session — for example walking through Manifest V3 permissions, reviewing injected UI with your developer, or checking audit findings live.

Yes. Use AccessibilityScore.in as a starting point to spot common issues on the web app your extension will sit on. It complements — it does not replace — a manual audit of extension popups, side panels and injected UI. Ready for a human review? Start with a $500 Quick Audit or book a free 30-minute call.