[amine_benselim]

minify your css, uglify your js and you're good to go. the visual part of your code will be available anyway, that's how the browser knows how to render your app.

when i comes to monetize, that depends on what kind of application you're making, just like a website you can use freemium model, a premium one, you can run ads on it.. as i said, it greatly depends on the type of extension you're creating

[GhostVII]

How would minifying and uglifying help? It's not hard to read minified CSS and uglified JS, and you can still use the minified/uglified versions in a knockoff app just fine.

[mattm]

IIRC minifying is against the terms of use and is more likely to result in your Chrome extension being removed from the Chrome webstore.