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I will develop custom chrome extension, browser extension manifest v3
Joy B
Level 2
About this gig
I build custom Chrome extensions that automate workflows, enhance productivity, and integrate AI all built on Manifest V3 to meet Google's latest standards.
Whether you need a simple popup tool or a complex browser extension with AI, APIs, and real-time data processing, I deliver clean, scalable code that works flawlessly.
WHAT YOU GET:
- Custom Chrome extension built from scratch (Manifest V3)
- AI-powered extensions (OpenAI, Gemini, custom AI integration)
- Browser automation & web scraping extensions
- Popup, sidebar, content scripts & background service workers
- API integration & third-party service connections
- Cross-browser support (Chrome, Firefox, Edge, Safari)
- Chrome Web Store submission & deployment
POPULAR USE CASES:
- SaaS tools & productivity dashboards
- AI assistants & smart browser tools
- Data extraction & content scrapers
- E-commerce price trackers
- Social media automation tools
- Custom workflow automation
TECH STACK:
JavaScript, TypeScript, React.js, Node.js, HTML/CSS, REST APIs
WHY ME:
- Manifest V3 compliant future-proof code
- Clean, documented, maintainable source code
- Fast communication & on-time delivery
MESSAGE ME BEFORE ORDERING with:
- Concept or reference
- Feature list
Get to know Joy B
Joy B
Data Mining Expert, Python Web Scraper, Medical and B2B Research
Level 2
- FromBangladesh
- Member sinceApr 2021
- Avg. response time1 hour
- Last delivery3 days
Languages
Bengali, English
Hi, I’m Joy Barmon, a Level 2 Seller with 7+ years of experience bridging the gap between data and technology. I specialize in Python Web Scraping, B2B Lead Generation, and specialized Data Research. Beyond data, I develop custom Chrome Extensions and high-performance AI Mobile Apps/SaaS using FlutterFlow and React Native. Need to optimize your workflow? I provide expert AI Prompt Engineering for ChatGPT-5o and Midjourney. From verified email lists to custom automation tools, I deliver accurate, CRM-ready results. Let’s scale your business with data-driven tech solutions!
My Portfolio
FAQ
Can you build any type of Chrome extension?
Yes! I've built productivity tools, AI assistants, data scrapers, price trackers, social media tools, SaaS dashboards, and more. Message me your idea — I'll confirm feasibility within a few hours.
Do you build with Manifest V3?
Absolutely. All my extensions are built on Manifest V3 — Google's latest standard. MV2 extensions are being phased out, so MV3 ensures your extension stays on the Chrome Web Store long-term.
Can you integrate AI (ChatGPT/Gemini) into an extension?
Yes! I integrate OpenAI GPT, Google Gemini, and custom AI models into browser extensions. AI assistants, content generators, summarizers, smart search — all built natively into the extension.
Will my extension work on Firefox, Edge, and Safari?
Yes! I build cross-browser compatible extensions. Chrome is the primary target, but with minor adjustments, the same codebase works on Firefox, Edge, and Safari. Select my Standard or Premium package.
Do you handle Chrome Web Store submission?
Yes. I prepare all assets (icons, screenshots, descriptions), handle the submission process, and address any review feedback from Google until your extension is live on the Chrome Web Store.
Can you add API integrations to my extension?
Yes! I integrate REST APIs, GraphQL, OAuth authentication, webhooks, and third-party services. Whether it's connecting to Notion, Slack, OpenAI, or your custom backend — I handle it.
Do I get the source code?
Yes, every package includes the complete source code. You receive clean, well-documented JavaScript/TypeScript code organized in a maintainable project structure with a README.
Can you fix or update my existing extension?
Yes! I fix bugs, add features, migrate MV2 to MV3, optimize performance, and update existing extensions. Message me with your current extension details and I'll assess the work needed.
What tech stack do you use?
JavaScript/TypeScript for core logic, React.js for popup and options UIs, Node.js/Express for backends, Tailwind CSS for styling, and Chrome APIs (storage, tabs, alarms, scripting, etc.).
What happens after delivery?
All packages include post-delivery support (7-30 days depending on tier). I fix bugs, handle CWS review issues, and ensure everything runs smoothly. Extended maintenance plans available as extras.
