Bundle Drop Sight

See exactly what's inside your React Native bundle.

Find large dependencies and compare builds in React Native and Expo. Free, local analysis. Your files stay in your browser.

No upload · No account · No analysis history

New local analysis

Add the two files Metro generated together

Sight uses generated positions from the source map to attribute the JavaScript bundle's bytes to application files and packages.

Sight analyzes these files entirely in your browser. Bundle Drop never receives or stores your code.

Production JavaScript bundleDrop here or choose a file.jsbundle, .bundle, or .js

Matching source mapDrop here or choose a file.map — source-map version 3 JSON