Quick Source Code Viewer от Hannah

A lightweight WebExtension designed for quickly inspecting website source code, including HTML, JavaScript, and CSS files, without leaving your current tab.

Main features:

Clean source code display with syntax highlighting and formatted structure for better readability

Toolbar icon displays detected JavaScript resource count

Shows line numbers, file size information, and cache-related headers

Easily copy source code to clipboard

Highlight selected URLs within the source file list through the options settings