LoremFiller

With just a few clicks, you quickly insert Lorem Ipsum placeholder text into any text field on webpages in Chrome. Making it a breeze to add natural-looking text to mock-ups, when testing out designs, and prototyping your projects. There are multiple text length choices, you can for example insert a short one-sentence Lorem ipsum text, a section or a multi-paragraph text. LoremFiller also supports custom texts, so you can easily add your own frequently-used phrases and sentences.

Screenshots from Chrome Web Store

Screenshots from Mozilla Add-ons