Custom extension development
We build browser extensions from scratch around your product logic, user journey and business goals.
Browser extension development team
We build browser
extensions for
every kind of product.
TabForge is a team of browser extension specialists. We design, build, migrate and maintain extensions for startups, SaaS products, ecommerce teams, internal tools and ambitious new ideas.
store.example.com / headphones
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$129.00
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Chrome
Safari
Firefox
CHROME EXTENSIONS✦EDGE EXTENSIONS✦FIREFOX ADD-ONS✦SAFARI EXTENSIONS✦MANIFEST V3✦WXT / PLASMO✦
Browser extension development
Extension specialists
Extension specialists
from concept to store launch.
Chrome, Edge, Firefox & Safari
We create a maintainable cross-browser architecture and handle browser-specific APIs where they differ.
Manifest V3 migration
We modernize legacy extensions, replace deprecated patterns and move complex products safely to MV3.
Backend & API integrations
Authentication, payments, AI services, CRM, affiliate platforms, analytics and your own product APIs.
Store publishing
We prepare production builds, permissions, listings and review materials for browser extension stores.
Maintenance & support
We keep extensions compatible, secure and release-ready as browsers, APIs and store policies evolve.
Working with TabForge
Clients come to TabForge
Clients come to TabForge
for deep extension expertise.
“
TabForge understood our extension architecture immediately. Their team simplified a complicated browser workflow, handled the store requirements and gave us a release we felt confident shipping.
AK
Alex KimProduct Lead, ecommerce platform
“
We chose TabForge because we needed people who actually specialize in browser extensions. The team owned architecture, content scripts, permissions, QA and publishing instead of treating the extension like a small side project.
MS
Maya StoneFounder, SaaS startup
“
The TabForge team migrated our legacy extension to Manifest V3 without derailing the product roadmap. Stability improved and releases became much easier for our internal team to manage.
DL
Daniel LeeCTO, B2B software company
Why TabForgeWe are developers
We are developers
focused on browser extensions.
Browser extensions are our specialty. Our team works across extension architecture, content scripts, background logic, browser APIs, permissions, security, publishing and long-term maintenance.
Extension-first engineering
We understand the constraints of service workers, content scripts, messaging, permissions and browser store policies before development starts.
↗Any extension use case
AI assistants, productivity tools, ecommerce, scraping, workflow automation, developer tools, internal enterprise extensions and more.
↗Modern extension stack
TypeScript, React, WXT/Plasmo, Manifest V3, service workers, secure messaging and reliable build pipelines.
↗Built for real users
We plan for performance, browser differences, telemetry, permissions, update safety and maintainability from day one.
↗A team after launch
TabForge can stay with your extension for updates, new features, store issues, bug fixes and browser compatibility work.
↗
Extension use cases
We build extensions
We build extensions
for products of all kinds.
AI browser assistants
Context-aware copilots, summarizers, writing tools and AI workflows directly inside the browser.
SUMMARIZE PAGE
Productivity tools
Turn repetitive browser work into fast, focused workflows.
12.4hworkflow time saved
Data & page automation
Extract, transform and act on page data with reliable content-script logic.
Ecommerce & shopping
Coupons, cashback, price intelligence, affiliate flows and contextual shopping experiences.
Price dropped by 12%An item on your list is worth another look →
Internal company tools
Secure browser workflows for sales, support, operations and back-office teams.
Existing extension upgrades
Audits, refactors, MV3 migration, performance fixes and feature development.
✓
Our extension processFrom extension idea
Discuss your project ↗
From extension idea
to production release.
01
Discovery & planning
We define the extension use case, target browsers, permissions, page contexts, integrations and the right scope for version one.
02
UX & prototype
We design the popup, side panel, options pages, injected UI and browser-specific interaction states before development begins.
03
Development & QA
Our extension developers build content scripts, background logic, APIs, storage, analytics and automated quality checks.
04
Store launch
TabForge prepares browser-store builds, listings, permission rationale, privacy materials and supports the review process.
05
Growth & support
We maintain browser compatibility, resolve store issues, ship new extension features and improve performance after launch.
FAQThe essentials,
The essentials,
answered.
If you are planning, rebuilding or migrating a browser extension, send TabForge a note and we will help you choose the right technical path.
How long does development take?＋
A focused MVP usually takes 4–6 weeks. A more advanced product with authentication, backend integrations and multiple browsers typically takes 8–14 weeks.
Do you build for Chrome, Firefox, Safari and Edge?＋
Yes. We use a shared codebase and isolate browser-specific behavior in adapters so you are not maintaining four separate products.
Do you work with Manifest V3?＋
Yes. New Chrome and Edge extensions are designed around MV3: service workers, strict CSP, permissions and modern content-script patterns.
Can you migrate an existing extension?＋
Yes. We begin with a technical audit, move the critical pieces in stages and aim to preserve release continuity throughout the migration.
Do you help with store submission?＋
Yes. We prepare builds, descriptions, screenshots, permission rationale and support the review process through publication.
First step
Have an idea?
Have an idea?
Let's make it
part of the browser.
Tell our extension development team what you want to build, migrate or improve. We will review the browser requirements and recommend a practical scope for the first release.
↗
Talk directly with the TabForge development teamYou speak with people who understand browser extension architecture, APIs and store requirements.