You will get creation of extensions for Chrome and/or Firefox
Project details
I develop extensions for Firefox and Chrome following best practices in performance, security, and user experience. I specialize in creating custom tools that optimize workflows, improve productivity, and offer intuitive interfaces.
In addition, I implement SEO strategies to improve visibility in extension stores and automation techniques to integrate intelligent processes that save time and resources.
My approach focuses on delivering efficient, scalable, and easy-to-maintain solutions tailored to each client's specific needs.
In addition, I implement SEO strategies to improve visibility in extension stores and automation techniques to integrate intelligent processes that save time and resources.
My approach focuses on delivering efficient, scalable, and easy-to-maintain solutions tailored to each client's specific needs.
Programming Languages
HTML & CSS, JavaScriptWhat's included $100
These options are included with the project scope.
$100
- Delivery Time 12 days
- Number of Revisions 3
- Design Customization
- Source Code
6 reviews
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KT
Kristel T.
Jul 30, 2026
sistema gamificado de asistencia y recompensas
He understood the concept of gamification very well and successfully transformed the idea into an attractive and functional system. He included important features such as attendance tracking, participation stickers, student strengths, and areas for improvement. The platform is well-organized, colorful, interactive, and easy to use. It is an excellent tool for motivating students and making learning more engaging and enjoyable. Outstanding work, Samuel!
AA
Alessandro A.
Dec 15, 2025
Fix react drag and drop calendar bug
Fixed my React calendar in no time! Always available, professional, and reliable. Highly recommended!
DA
David A.
Nov 28, 2025
Edit sheets
Awesome freelancer to work with. Quick response times and great quality
LZ
Luis Z.
Nov 22, 2025
MERN full stack
Working with this developer has been a fantastic experience from start to finish. His technical mastery of React is evident at every stage of the project. He quickly grasped not only the technical requirements but also the project's purpose and vision, enabling him to offer solutions aligned with our objectives.
One of the aspects I valued most was his ability to solve problems with clarity and initiative. He approached every challenge with a positive attitude, proposed effective alternatives, and implemented them flawlessly. This level of commitment significantly reduced difficulties throughout the development process.
He was always clear, concise, and proactive in providing updates, asking the right questions, and ensuring we were always on the same page. This made the workflow smooth and efficient.
Another highlight is that he delivered the work ahead of schedule without compromising quality. In fact, the final result exceeded our expectations.
I had my doubts at first, like anyone would, but we would definitely work with Samuel again in the future.
One of the aspects I valued most was his ability to solve problems with clarity and initiative. He approached every challenge with a positive attitude, proposed effective alternatives, and implemented them flawlessly. This level of commitment significantly reduced difficulties throughout the development process.
He was always clear, concise, and proactive in providing updates, asking the right questions, and ensuring we were always on the same page. This made the workflow smooth and efficient.
Another highlight is that he delivered the work ahead of schedule without compromising quality. In fact, the final result exceeded our expectations.
I had my doubts at first, like anyone would, but we would definitely work with Samuel again in the future.
DA
David A.
Nov 21, 2025
Web Scraping Expert
Amazing team member to work with, quick responses, fast turnaround, overall 10/10 experience, thanks Samuel
About Samuel
SaaS & AI Full Stack | React, Next.js, Supabase | Landing Page
100%
Job Success
Ciudad del Este, Paraguay - 9:55 pm local time
I've delivered production features for applications used by thousands of users, and solved technical challenges other developers couldn't complete — including a Chrome extension currently serving over 100,000 users. My focus is not just writing code, but building solutions that hold up in production: clean architecture, strong performance, and a smooth user experience your customers will actually enjoy.
What I can build for you:
- SaaS platforms and startup MVPs
- Admin dashboards and internal tools
- AI integrations (OpenAI, Claude, automation workflows)
- Real-time applications
- Authentication, payments, and subscriptions
- React Native mobile apps
- Supabase and PostgreSQL backends
- Browser extensions and workflow automation
Tech stack: React, Next.js, TypeScript, Node.js, Supabase, PostgreSQL, React Native, Expo, Firebase, REST APIs
If you need a developer who can take your idea from concept to a reliable, production-ready product — and communicate clearly with you every step of the way — I'd be happy to discuss your project.
Steps for completing your project
After purchasing the project, send requirements so Samuel can start the project.
Delivery time starts when Samuel receives requirements from you.
Samuel works on your project following the steps below.
Revisions may occur after the delivery date.
extension functionality
indicate your ideas or functionalities for the extension and for which browser