This has happened to all of us when writing an email or composing a blog article – you try to copy some text from a webpage but when you paste it in, you get all the original fonts, colors, and other formatting along with the copied text. Google Chrome has a keyboard shortcut the avoid this.
Alongside the common Ctrl-V keyboard shortcut for "paste", Google Chrome supports a similar shortcut, Ctrl-Shift-V, for "paste as plain text". (And it’s Command-Shift-Option-V on a Mac.)
You can use this shortcut in any rich text editor like Gmail's compose window, or when writing in Google Docs to strip out all the presentation from the original source and just paste in a block of text.
[via Chrome blog]