Completely unrelated the content - which I cannot read due to the tiny font, but can anyone recommend a plugin/extension for Firefox that can take webpages like

Completely unrelated the content - which I cannot read due to the tiny font, but can anyone recommend a plugin/extension for Firefox that can take webpages like this and trim out the excessive whitespace? I cannot read the text and increasing the size (control-+) just makes the white space bigger too.