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I will develop custom google chrome extension for your needs
Bernardo Costa
About this gig
Need a custom Google Chrome Extension built specifically for your business or workflow?
You're in the right place!
I will build a professional, fast, and secure Google Chrome Extension tailored to your specific needs using modern Manifest V3 standards.
What can I build?
- Custom Chrome Extensions
- Web Scraping & Data Extraction
- Web Automation & Repetitive Tasks
- API & Webhook Integrations
- AI integrations (OpenAI, Gemini, Claude)
- Custom Popups, Side Panels & UI
- Form Filling, Data Entry & DOM Automation
- CSV, JSON & Excel Data Export
Whether you have a simple automation idea or a complete SaaS extension, I'll turn your requirements into a reliable and easy-to-use solution.
Why work with me?
- Clean and maintainable code
- Modern Manifest V3 architecture
- Secure and performance-focused development
- Clear communication and support
Whether you have a fully defined technical specification or just an idea, I can help transform it into a functional Chrome Extension.
IMPORTANT: Every project is different, so please contact me before placing an order. Send me your requirements or idea, and I'll review the scope and provide the best solution and a custom quote.
Let's build your Chrome Extension!
Get to know Bernardo Costa
Bernardo Costa
Sky is the limit!
- FromPortugal
- Member sinceFeb 2020
- Last delivery1 year
Languages
English, Portuguese
Hello! I'm Bernardo, a senior Software Developer with over 8 years of experience in the tech industry, having worked with various multinational companies. My expertise spans multiple programming languages, including Kotlin, Java, Python, JavaScript, and C#, to name a few. I specialize in developing robust and scalable backend microservices using Kotlin with Spring, ensuring top-notch performance and security. I bring a unique combination of technical prowess and security-focused development to every project.
Other Software Development Services I Offer
FAQ
Why should I message you before ordering?
Every automation project is unique. Messaging first allows me to provide a 5-minute technical breakdown and a realistic timeline. This prevents scope issues and ensures I select the right tech stack (React, GAS, or Node.js) for your specific business goals.
Does this work on other browsers like Edge or Brave?
Yes! Most Chrome extensions are fully compatible with Chromium-based browsers like Edge, Brave, and Opera.
Who owns the source code?
You do — complete rights and ownership are transferred to you.
How are custom Google Chrome Extensions developed?
Google Chrome Extensions are developed using web technologies like HTML, CSS, and JavaScript. Developers create a manifest file and define permissions, allowing Google Chrome Extensions to interact with browser features and external APIs.
What if a website updates and breaks the extension?
I offer bug fixes for 14 days after delivery. For long-term maintenance, we can set up a custom monthly milestone.
Can you integrate the extension with my own database?
Absolutely. I can connect the extension to your REST API, Firebase, or other backend systems (Standard or Premium packages).
Will my extension be Manifest V3 compliant for 2026?
Yes. I build all tools with Manifest V3 standards to ensure security, high performance, and 2026 compatibility. This prevents "unsupported" warnings and ensures your tool remains functional on the Chrome Web Store. I focus on future-proof development.
