Chrome/Firefox: access source of an extension

Question

Do Chrome or Firefox make your extension\'s source code open to the host machine? And if yes where are the respective folder on Mac?

Answer 1

view online

^{View a Chrome/Firefox/Opera extension/addon’s source in browser (without downloading):}
https://robwu.nl/crxviewer/

bookmarklet

bookmarklet usage

Click the bookmarklet when on an extension’s page in the Chrome Web Store, Firefox addon gallery or Opera addon gallery.

bookmarklet source

javascript: location.href='https://robwu.nl/crxviewer/?crx='+document.location.href; 

bookmarklet link

view extension source online (Chrome .crx) @ https://robwu.nl/crxviewer/?crx= ← You can drag this link to your bookmark bar to create the bookmarklet, but you have to edit its URL afterwards: Delete everything before javascript, including the single slash: http://delete_me/