AST Explorer

Use this free online AST explorer to visualize the Abstract Syntax Tree of JavaScript and TypeScript code. Paste your code and instantly view a hierarchical tree of nodes — functions, variables, expressions, statements, and more. Click any AST node to highlight the corresponding source code. Essential for understanding how parsers and compilers interpret your code, building Babel plugins, ESLint rules, or codemods. Supports TypeScript AST exploration with full type annotation parsing.

Key Features

• Process and analyze data entirely in your browser — nothing is sent to any server
• Handles edge cases, special characters, and large inputs gracefully
• Intuitive interface designed for quick, daily developer tasks
• Keyboard-friendly workflow for power users
• Instant output with zero server round trips
• Responsive design — works perfectly on desktop, tablet, and mobile

How to Use AST Explorer

1. 1Enter your input data in the AST Explorer input area above
2. 2Adjust any available options or settings to match your requirements
3. 3Click the action button to process your data with AST Explorer
4. 4Copy the result to your clipboard or download it for use in your project

When to Use AST Explorer

AST Explorer is ideal for developers who need a quick, reliable way to paste javascript or typescript code and view the ast (abstract syntax tree) visually. Whether you're working on a personal project, debugging production issues, or building enterprise applications, this tool saves time by handling formatters & beautifiers tasks directly in your browser without requiring any software installation or account setup.

Common use cases include day-to-day development workflows, code reviews, API debugging, data migration tasks, and quick one-off transformations. Since all processing happens client-side, AST Explorer is safe to use with sensitive or proprietary data — nothing ever leaves your machine.