Browser Extension Development Company
More Than Just a Code
We provide a wide range of Google Chrome extension development services, including the engineering of various custom plugins and add-ons for both small businesses and large-scale corporations to enrich your browsing experience and make it more impactful.
Whether you’re a startup launching an MVP or a product company enhancing user workflows, Upstaff provides the expertise to make your browser extension a success:
🚀 Proven Track Record: We’ve built browser extensions used by thousands, from job analysis tools to enterprise-grade productivity enhancers.
📈 Focus on Business Impact: We don’t just code—we ensure your extension meets business KPIs, drives engagement, and provides real user value.
💡 Rapid Prototyping & MVP Development: Launch fast, test the market, and iterate efficiently with our agile development approach.
⚡ Post-Launch Support & Growth Strategy: Need updates, new features, or ongoing maintenance? We offer continuous support and iteration strategies.
End-to-End Development
From concept validation to publishing on the Chrome Web Store, Edge Add-ons, or Firefox Marketplace, we handle the full development cycle.
Performance & Security
We optimize extensions for speed, memory efficiency, and security best practices to meet browser policies and user expectations.
Cross-Browser Compatibility
Our extensions work seamlessly across Chrome, Firefox, Edge, Brave, and Safari, ensuring the widest possible user reach.
Scalability & Maintainability
We build extensions with future growth in mind—whether that means adding new features, integrating with third-party APIs, or handling high user loads.
Automation & AI Integration
Need automation, scraping, or AI-powered insights? We integrate cutting-edge technologies like OpenAI, GPT-based analysis, Gemini Mini, and machine learning models.
Please meet Upstaff Browser Extension development team
- 7 years of commercial experience with JavaScript, ECMAScript 6. - 5 years with Vue.js framework (including Vue 3 core principles, Style Guide, Composition API, official documentation of the framework) - Deep understanding of HTML5 and CSS3. - Interacting with API endpoints and other web services. - Converting UI/UX mockups into functional web applications with pixel perfection - Experience with responsive layout, web sites, mini applications in JS and SPA in Vue.js. - Familiar with SOLID, DRY and other clean code design principles. - Experience with UI components like UI Kit & Bootstrap - Unit tests (Cypress) - Projects with Wordpress - Intermediary English
Middle
Vinnitsa, Ukraine
10+ years of experience in web development, M.Sc in Software Engineering, GAI, LLMs Front-End: Angular, React, Vue.js (JavaScript & TypeScript) Back-End: Node.js, Next.js, TypeScript , PHP Mobile: React Native AWS Cloud infrastructure Control systems (e.g., Git) and familiarity with DevOps practices for continuous integration and deployment (CI/CD). Unit testing, integration testing, and end-to-end testing. Experience leading and mentoring a team of developers, including assigning tasks, providing guidance, and ensuring the team's success. Ability to motivate and inspire team members, resolve conflicts, and provide constructive feedback. Experience conducting assessments and interviews remotely.
Architect/Team-lead
Ukraine
- 3 years of commercial experience, early projects since 2017. (Vue.Js, JavaScript, Chrome extensions) - Has good knowledge of JavaScript, working with arrays, working with elements, sorting and data algorithms. Good understanding of HTML and CSS. - Familiar with methodologies, principles, paradigms, and patterns in software development. - Vuex for state management and Styled Components for styling. - Rest APIs (Google, NovaPoshta) and Git for version control. - Tailwind, Figma, and Webpack for UI - Experienced in using Google Firebase, Cloud Firestore and Authentication.
Junior
Dnipro, Ukraine
• 15+ years JavaScript programming • Over 10 years in Node.JS programming • Familiar with React.js • Experience building highly scalable distributed web applications and browser extensions • Extensive experience with REST services • Strong communication and cooperation skills • Solid experience as a Backend developer • Fluent in English, written and spoken • long Term experience in remote work with USA and Europien companies • Self-directed person, with proven ability to manage goals and deadlines effectively
Expert
Belarus
Project-based Model
Get a custom platform design along with any other services you might need (expert consultations, product design, web engineering, digital platforms, mobile application development, Operations and Clouds, Data and Analytics, Desktop, Embedded systems, Blockchain, No-code/Low-code, Website optimization, SEO and much more) at a fixed price.
Dedicated Development Team
Get a dedicated team of software developers working on your project according to our flexible time and materials payment scheme.
Consulting
We help our clients to identify the potential of a software development for their organization including market research, project’s feasibility assessment, analysis of blockchain platforms, tools, right features prioritization.
Steps of Creation a Browser Extension
How to write Browser Extensions? Let’s consider the important steps in this Chrome Extension guide:
Define Extension Purpose and Features
First step of Chrome Extension development guide is to clearly outline the purpose and functionality of your extension. Understand what problem it solves or what value it adds to users.
Set Up Your Development Environment
Ensure you have a code editor (e.g., Visual Studio Code) and a working knowledge of HTML, CSS, and JavaScript.
Create Manifest File
To make a Chrome extension, we start with a manifest file (manifest.json). This file outlines essential details about your extension, such as its name, version, permissions, and scripts.
Create HTML, CSS, and JavaScript Files
Develop the necessary files for your extension. For example, if your extension has a popup, create popup.html, popup.css, and popup.js.
Test Extension Locally
Load extension locally by navigating to chrome://extensions/, enabling “Developer mode,” and clicking “Load unpacked.” Select the directory containing your extension files.
Add Functionality
Implement the core functionality of your extension using JavaScript. Handle events, manipulate the DOM, and interact with Chrome APIs as needed.
UI/UX Design
Ensuring extension has a user-friendly interface and adheres to Chrome’s design guidelines. Consider using icons, colors, and layouts that align with the overall Chrome experience.
Testing and Debugging
Thoroughly test of extensions in various scenarios to identify and fix bugs. Utilize Chrome DevTools for debugging.
Publishing and Support
- Placement on browser stores (Google Store, Firefox, Safari etc)
- Extension description content and page
- Product placement on other platforms
- On-going support, maintenance and new version releases.
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