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Fiverr Pro
English
$
USD
I will create custom chrome or firefox extensions with full functionality
Sumalya
About this gig
Want a powerful, lightweight, and secure browser extension that solves real-world problems?
I specialize in creating custom Chrome extensions and browser plugins using modern tech like HTML,5, CSS3 and JavaScript, React, and Next.js. Whether it's for automation, productivity, scraping, content filtering, or API-based tools I've got you covered. I already own 25+ browser extensions in firefox that has average 4000+ daily users with zero marketing.
What I offer:
- Custom Chrome/Edge/Firefox extensions
- Automation tools (form fillers, clickers, scrapers)
- Backend/API integration
- Extension UI with React or plain HTML
- Bug fixing & feature updates
Why choose me?
As a React/Next.js developer, I focus on performance, UX, and reliability. Even as a new seller on Fiverr, Im confident I'll deliver top-tier work fast.
Lets bring your idea to life and create something awesome.
Respect third-party rights
Please be aware that it is against Fiverr's policies for sellers to include themes, templates, or any other elements that infringe third-party rights or applicable laws in the delivered work. Read more about in our Guide to Responsible Digital Creation.
Get to know Sumalya
Sumalya
React, NextJS, HTML5 Developer who also creates Chrome Extensions
- FromIndia
- Member sinceAug 2025
Languages
Bengali, English, Hindi, German
I'm Sumalya, a passionate website developer mastered specially in react, next and angular js for frontend and nodejs, firebase, authjs, sanity for backend to give you fullstack website experience. I can create websites from your imaginations, drawings or screenshots.
I build
- 100+ HTML websites,
- 20+ NextJS websites,
- 20+ web games for Y8 and Poki that has over 200000+ gameplays,
- 30+ firefox extension that has 4000+ daily active users.
Now I am here to help you to create the best websites for you and help you in your awesome journey.
Tech Stacks:
React, NextJS, Angular, Html, CSS, JS
My Portfolio
FAQ
I have an idea, but I don't know how Chrome extensions work. Can you help?
Absolutely! Just describe what you want your extension to do — even in simple words — and I’ll take care of the technical part.
What browsers will the extension support?
I create extensions for cross browser support so your extension will work on Firefox, Edge and Chrome.
Can you upload the extension to the Chrome Web Store for me?
Yes! I can either guide you through the submission process or handle it for you if you provide access to your developer account.
Will the extension be built using Manifest V3?
Yes, all new Chrome extensions are built using the Manifest V3 standard for performance and security. If you need support for V2, just ask.
Can the extension interact with websites, click buttons, or fill forms?
Yes. Using content scripts, I can inject custom behavior into specific websites — such as scraping, form filling, and automation.
Will I receive the full source code?
Yes. You will receive clean, well-documented source code — and you own it completely. Just request it within 30 days of delivery.
Will the extension work offline?
That depends on the features you need. Many tools (like productivity or automation extensions) can work offline. Just mention your use case.
Can you add backend functionality (like saving user data or API requests)?
Definitely! I can integrate the extension with Firebase, custom APIs, or databases to store data, fetch content, or handle user logins.
