Service

Browser Extension Development

Custom browser extensions for productivity and business workflows, built to the permission model and publishing requirements of the relevant extension store, and handed over as complete source code.

01

Browser Extension Development

Custom browser extensions for productivity and business workflows, built to the permission model and publishing requirements of the relevant extension store, and handed over as complete source code.

What this covers

  • Custom extension development for Chrome, Firefox and Edge
  • API integrations including AI APIs
  • Browser automation for forms, repetitive tasks, clicks and multi-tab workflows
  • HTML manipulation and DOM traversal
  • Web data parsing and export to JSON, CSV, XML, Excel or Sheets
  • UX/UI enhancements
  • Performance optimization and security enhancements
  • Authentication, licensing and payment integrations for monetized extensions
  • Manifest V3 development or migration
  • Assistance with browser-store deployment

What you receive

  • A working browser extension for the agreed browser(s); requested automation or extension functionality; user interface where required; API/AI integrations where scoped; Manifest V3-compatible source code where applicable; tested extension package; complete source code; installation/testing guidance and store-deployment assistance where scoped.

Technologies

  • JavaScript
  • TypeScript
  • React
  • Next.js
  • Plasmo
  • Manifest V3
  • Express.js
  • Node.js
  • jQuery
  • Tailwind CSS

Extensions are built for lawful, authorized use. Fahymas LLC does not develop extensions intended for credential stuffing, account takeover, fake-account creation, CAPTCHA bypass, authentication bypass, security-control circumvention, detection evasion, platform abuse, spam, fraudulent automation or unauthorized account manipulation. Automation is built for systems and accounts you own or are authorized to use.

Start this project

Pricing

Starting package.

This is the published entry package for this service. Larger or more complex work is quoted individually after a requirements review.

Browser Extension Development

Basic

$315

Best for A single-purpose extension with one clear job to do.

Simple browser extension with basic functionality.

Delivery
3 days
Revisions
Unlimited
  • Source code
Request this package

Package pricing applies to the scope described. Requirements outside that scope are reviewed separately and included in a written proposal before any additional work begins. All prices are in US dollars (USD) and exclude any taxes that may apply. Larger or more complex projects are quoted individually.

How the work runs

1) Discuss requirements (Zoom available) → 2) Develop extension → 3) Test functionality → 4) Deliver complete source code

Other services

Full-Stack AI SaaS Development · AI API Integration & LLM Applications · AI Chatbot & RAG Development · JavaScript, React & Next.js Debugging · Authorized Data Extraction & API Automation · Authorized JavaScript Code Analysis & Maintenance

Next step

Start this project.

Send your requirements and we will confirm the scope, the package and the price in writing before anything is invoiced.