Million Overview
Million is a comprehensive performance optimization toolchain for modern React applications. It aims to eliminate the complexity and time-consuming nature of traditional performance profiling. Instead of forcing developers to decipher complex flamegraphs, Million integrates directly into the development environment (via a VSCode extension called Million Lint) to provide real-time, actionable insights. It automatically detects performance issues like slow components, excessive re-renders, and input lag, then suggests and often automates the fix, much like a linter for performance.
The core philosophy of Million is 'Profile-guided optimization' (PGO). Unlike static analysis tools such as the React Compiler, which can only optimize based on code structure, Million instruments the code to collect runtime performance data. This allows it to understand the actual behavior of the application and identify optimization opportunities that static analysis would miss. It's like having an expert performance engineer constantly reviewing your code as you write it. The tool is incredibly lightweight, adding less than 4kB (gzipped) to your bundle and consuming minimal JS execution time, making it safe for both development and production environments.
How to use Million
Getting started with Million is designed to be quick and seamless, integrating into your existing React project in minutes. The primary method is through a simple command-line interface.
- Automatic Installation: Open your terminal in the root of your React project (Next.js, Vite, Create React App, etc.) and run the command:
npx million@latest. - Setup Wizard: The installer will guide you through the process, which includes installing the
@million/lintpackage and the companion Million Lint VSCode extension. It automatically configures your build tool (e.g.,next.config.jsorvite.config.js) to work with Million. - Start Developing: Once installed, simply run your development server as usual. Million Lint will now work in the background.
- Identify & Fix: As you navigate and interact with your application, Million Lint analyzes component rendering performance. It will highlight slow components and performance bottlenecks directly in your VSCode editor, next to the relevant lines of code. It provides clear explanations of the issue and often offers a one-click 'quick fix' to apply the optimization.
Core Features of Million
- Automatic Performance Issue Detection: Proactively finds the slowest components and performance hogs in your application without manual profiling.
- In-IDE Analysis and Fixing: Displays performance metrics and actionable suggestions directly within VSCode, turning performance optimization into a seamless part of the development workflow.
- AI-Powered Code Suggestions: Uses a combination of runtime data and language models to generate precise code fixes for complex issues like input lag, inefficient state management, and unnecessary re-renders.
- Event Replay: A powerful debugging feature that allows you to record and replay user interactions to consistently reproduce and investigate performance issues.
- Optimizing Compiler (Million.js): A separate but integrated compiler that can automatically optimize DOM-heavy operations, delivering performance gains of up to 70%.
- Extremely Lightweight: The runtime script is less than 4kB gzipped and has a negligible performance overhead (
- Production Observability (Upcoming): Future capabilities will allow you to collect performance data from your live production application and see the insights directly in your IDE.
Use Cases for Million
Million is invaluable for any developer or team building with React, especially for complex, data-driven applications.
- E-commerce Sites: Optimizing product grids, search filters, and checkout forms to improve user experience and conversion rates.
- Dashboards and Data Visualization: Speeding up applications that render large datasets, charts, and tables, preventing UI lag.
- Social Media & Content Platforms: Ensuring smooth scrolling and interaction in feeds with many components.
- SaaS Applications: Improving the responsiveness of complex user interfaces with heavy state management (e.g., using Redux, MobX, or Context API).
- Improving Core Web Vitals: Directly addressing issues that cause poor Interaction to Next Paint (INP), First Contentful Paint (FCP), and Largest Contentful Paint (LCP) scores.
Advantages of Million
Million offers a significant advantage over traditional performance tools and workflows.
- Simplicity and Accessibility: It abstracts away the complexity of profilers and flamegraphs, making performance optimization accessible to all developers, not just experts.
- Proactive, Not Reactive: It finds issues as you code, preventing performance regressions from ever reaching production.
- Contextual and Actionable: By showing issues directly in the IDE, it provides the right information at the right time, enabling developers to fix problems in minutes.
- Runtime-Aware Intelligence: Its Profile-guided optimization (PGO) approach provides more effective and creative solutions than purely static analysis tools.
- Holistic Toolchain: Combining a linter (Million Lint) and a compiler (Million.js), it offers a multi-layered approach to performance.
Pricing and Plans
Million operates on a freemium model, making it accessible for projects of all sizes. Developers can start using the tool with a Free account, which includes the core features for individual use. For teams and companies that require more advanced capabilities, collaboration features, and dedicated support, Million offers custom Enterprise plans. To learn more about Enterprise pricing and features, you can contact their sales team directly through the official website.
Traffic
Latest traffic
Status
Monthly traffic trend
- 2025-9: 29.9K
- 2026-1: 19.0K
- 2026-2: 19.0K
- 2026-3: 16.8K
- 2026-4: 12.8K
- 2026-5: 22.9K
Geography
Top 5 countries / regions
- 🇺🇸United States39.5%
- 🇮🇳India29.8%
- 🇫🇷France14.5%
- 🇧🇷Brazil8.4%
- 🇲🇾Malaysia7.8%
Traffic sources
| Source type | Percentage |
|---|---|
Direct | 87.1% |
Referral | 12.9% |
Top keywords
| Keyword | Cost per click |
|---|---|
| million | $2.32 |
| million js | $0.00 |
| million.js | $0.00 |
| millionjs | $0.00 |
| million react | $0.00 |
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