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English
$
USD
I will develop a chrome or browser extension and web app with react and api integration
Danish Karim
5.0
5.0
About this gig
Need a custom browser extension, web app, or both? I build secure, featurerich Chrome and Firefox extensions and companion web applications using React, Vite, and modern web APIs.
What I can build:
Crossbrowser extensions (Chrome, Firefox, Edge) with React UIs
Companion web dashboards and admin panels
Extensions with realtime updates and API integrations
Fullstack web apps that extend extension functionality
Productivity tools, content filters, and CRM integrations
My expertise:
Built a crossbrowser ResearchCollab extension with realtime sync
Experienced with Manifest V3, background/service workers, and store submissions
Integrated extensions with Supabase, AWS, and custom Node.js backends
Tech stack: React, Vite, JavaScript/TypeScript, Chrome/Firefox APIs, Tailwind CSS, Node.js, REST/GraphQL.
Tell me about your project and Ill provide a clear scope, architecture suggestion, and quote.
Get to know Danish Karim
Danish Karim
Senior Full Stack and AI Developer, React, Nodejs, AWS, LLM Integration
- FromPakistan
- Member sinceMar 2018
- Last delivery4 months
Languages
Urdu, English
👨💻 Senior Full Stack & AWS Developer | 6+ Years Exp
I build scalable web apps for:
🏥 Medical & Secure Platforms
🔄 SaaS & Real-Time Tools
⚙️ High-Performance Backends
🧩 Browser Extensions & Web Apps
✅ Tech: React, Next.js, Node.js, AWS Amplify, Lambda, Supabase, TypeScript.
📁 Featured Work: CloudHolter, ResearchCollab, Hunt
avino, Microlnvesting.
Let’s build something amazing. Message me today!
My Portfolio
Other Software Development Services I Offer
FAQ
Do you develop extensions for both Chrome and Firefox?
Yes, I build cross-browser extensions compatible with Chrome, Firefox, and Edge using modern web extension APIs and React.
Can you build a web app that works with the extension?
Absolutely. I often build companion web dashboards or full-stack apps that sync with extension data via APIs or real-time connections.
Do you handle Chrome Web Store/Firefox Add-ons submission?
Yes, I can prepare, test, and submit your extension to official stores and guide you through the review process.
What’s your experience with Manifest V3?
I’ve built extensions using Manifest V3 with service workers, promises, and modern Chrome APIs. I ensure future-proof, performant extensions.
Can you add real-time features to an extension?
Yes, I’ve integrated WebSockets, Supabase Realtime, and polling mechanisms for live updates in extensions (like in ResearchCollab).
Reviews
4 reviews for this Gig
| (4) | ||
| (0) | ||
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| (0) |
Rating Breakdown
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- Quality of delivery
- Value of delivery
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B 
brian123abcd
Repeat Client
United States
Overall you have done a really good job, Thank you so much for your help, highly recommend your service, Thanks!
Up to $50
Price
1 day
Duration
Helpful?J 
jfpb1980
Canada
good communication, great service
Helpful?S 
soney09
Repeat Client
United States
Expert in JS JQuery! Fixed my JS file and counteroffered half the price of my initial offer!! Understands the project and works with a realistic timeline and budget. Did more than I even asked, he fixed the bugs and also optimized it
Helpful?S soney09
Repeat Client
United States
Great job! Tried to understand the issue properly in the beginning, and deliver the result super quick!
D 
Seller's Response
Helpful?
Reviews
4 reviews for this Gig
| (4) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
B brian123abcd
Repeat Client
United States
Overall you have done a really good job, Thank you so much for your help, highly recommend your service, Thanks!
Up to $50
Price
1 day
Duration
Helpful?J jfpb1980
Canada
good communication, great service
Helpful?S soney09
Repeat Client
United States
Expert in JS JQuery! Fixed my JS file and counteroffered half the price of my initial offer!! Understands the project and works with a realistic timeline and budget. Did more than I even asked, he fixed the bugs and also optimized it
Helpful?S soney09
Repeat Client
United States
Great job! Tried to understand the issue properly in the beginning, and deliver the result super quick!
D Seller's Response
Helpful?
