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I will develop custom chrome extension with browser automation
Zlatko M
About this gig
Need a custom Chrome extension, browser automation tool or AI-powered browser extension built for your business, SaaS product or workflow?
My name is Zlatko. I have 7+ years of experience in web design and development, with 120+ projects delivered for clients across different industries.
I build modern Chrome extensions and browser extensions using JavaScript, TypeScript, React and Manifest V3, with a strong focus on clean UI, reliable functionality and production-ready code.
I can build:
- Custom Chrome extensions
- Browser automation tools
- AI-powered extensions
- OpenAI, Claude and Gemini integrations
- API integrations
- SaaS companion extensions
- Productivity tools
- Data extraction and export tools
- Custom popups and side panels
- Authentication and user accounts
- Supabase / Firebase integrations
- Existing extension fixes and improvements
- Manifest V3 upgrades
- Chrome Web Store ready extensions
You will receive clean source code, a tested extension and clear communication throughout the project.
Have an idea already? Send me the functionality, target websites and any references, and I will recommend the best approach before we start.
Get to know Zlatko M
Zlatko M
I build, fix, and launch AI websites, SaaS MVPs, and agency websites
- FromCroatia
- Member sinceDec 2021
- Avg. response time1 hour
- Last delivery1 week
Languages
English, Croatian
I build and launch production-ready websites, SaaS products, AI apps, and full-stack web applications using Claude Code, Cursor, Lovable, Replit, Next.js, React, Supabase, Stripe, APIs, and Vercel. I fix broken AI-built apps, auth, databases, payments, bugs, performance, and deployment. Starting from scratch? Send a brief or Figma. Agencies can hire me white label. 7+ years, 120+ projects, 80+ five-star reviews, 4.9 rating, 100% on-time. Send your repo, brief, or broken preview.
Among my clients
EGC
Vault Apps
Mavesta Media
My Portfolio
FAQ
Can you develop a custom Chrome extension from scratch?
Yes. I can develop a custom Chrome extension or browser extension from scratch using JavaScript, TypeScript, React and Manifest V3. I can handle the UI, browser automation, API integrations, AI features, backend connections and complete source code.
Can you build AI-powered Chrome extensions with OpenAI, Claude or Gemini?
Yes. I can build an AI Chrome extension using OpenAI, Claude, Gemini or other AI APIs. This can include AI assistants, summarization, content generation, data analysis, workflow automation, smart browser tools and custom AI features inside your browser extension.
Can you create browser automation and web automation Chrome extensions?
Yes. I develop Chrome extensions for browser automation, workflow automation and repetitive web tasks. Your custom browser extension can interact with websites, process page data, automate actions, export information and connect with APIs while using modern Manifest V3 standards.
Can you integrate APIs, Supabase, Firebase or a backend into my Chrome extension?
Yes. I can connect your Chrome extension to REST APIs, OpenAI, Supabase, Firebase, custom backends, databases and third-party services. I can also add authentication, user accounts, cloud data, settings, API requests and secure backend functionality to your browser extension.
Can you fix or upgrade an existing Chrome extension to Manifest V3?
Yes. I can fix, debug, improve or upgrade an existing Chrome extension or browser extension, including Manifest V3 migration. I can resolve broken features, permissions, service workers, API issues, UI problems, browser automation bugs and outdated Chrome extension code.
Can you publish my Chrome extension to the Chrome Web Store?
Yes. I can prepare your Chrome extension for Chrome Web Store submission, including Manifest V3 configuration, icons, package setup, permissions review and store-ready files. I can also guide you through publishing, although final approval is always handled by Google.
Can you build Chrome extensions with custom UI, popups and side panels?
Yes. I can design and develop a polished Chrome extension UI including custom popups, side panels, settings pages, dashboards and browser interfaces. I use modern frontend development with React, TypeScript and clean UX so your browser extension feels like a real product.
Will I receive the full source code for my custom Chrome extension?
Yes. Every custom Chrome extension package includes the complete source code unless a custom offer states otherwise. You will receive clean, maintainable browser extension code that can be edited, deployed, upgraded and continued later by you or another Chrome extension developer.
Can you build a Chrome extension for web scraping and data extraction?
Yes. I can develop a custom Chrome extension for web scraping, data extraction and structured data export. Your browser extension can collect allowed page data, process it, filter results and export to CSV, JSON or APIs while using Manifest V3 and clean extension architecture.
Can you make my Chrome extension work on Firefox and Microsoft Edge too?
Yes. I can develop or adapt your Chrome extension for Firefox and Microsoft Edge where browser APIs allow it. I can handle compatibility fixes, Manifest V3 differences, permissions, browser-specific testing and packaging so your browser extension can reach users across multiple browsers.
