Professor X – Get this Extension for 🦊 Firefox (en-US)

The Professor X Extension let's you see inside a page's head without viewing the sourcecode. Once installed the Professor X command is available by right-clicking as well as in the Tools menu. When applied to a page it will display the contents of the page's head element, including Meta, Script and Style content. This can help you see how a website was constructed without having to go back and for

[GSOHB7]

ヘッダー情報を表示するためのアドオン。今までにも色々あったけど見た目が良いのでとりあえず使ってみる。