A CLI tool that lets you visually compare your installed npm package versions with any available release. Autocomplete helps you select a package, then pick a version to visually diff against your current one.

Use npm-peek instantly with npx:

# Interactive mode with autocompletion using your package.json
npx npm-peek

# Direct comparison mode with specific package & version
npx npm-peek react --target 19.1.0

• Smart Dependency Detection: Automatically finds and lists all packages from your package.json
• Fuzzy Search: Quickly locate packages with partial name matching
• Version Autocomplete: Easily select from all available versions of a package
• Visual Diff Viewer: See all changes in a clean, browser-based HTML interface
• One-Command Operation: Compare versions with minimal typing
• Zero Configuration: Works out-of-the-box with any npm project

1. Reads package.json to identify dependencies and used version
2. Prompts you to select a package and target version (with autocomplete)
3. Generates a visual diff
4. Opens the diff in your default browser