3lines.org is a free iPhone application developed by Jon Hargett that falls under the Utilities & Tools category. This handy app allows users to import ePub files in Simplified or Traditional Chinese and convert them to include a romanization line (pinyin, Sidney Lau, Yale) and a native language line (English, Spanish). The converted document can then be easily saved as a PDF.

One of the key features of 3lines.org is the ability to copy Chinese text from any source and paste it directly into the app. This makes it convenient for users who come across Chinese text in various contexts, such as messages, emails, or web pages. The app automatically converts the text into 3 lines, with romanization and native language translations.

Another useful feature of 3lines.org is the ability to copy a URL from the Safari web browser and paste it into the app. This allows users to pull up the entire web page in the app and convert the Chinese text on the page into 3 lines.

With its intuitive interface and powerful conversion capabilities, 3lines.org is a valuable tool for anyone who needs to simplify and convert Chinese text. Whether you're a student, a language enthusiast, or simply looking for a way to better understand Chinese content, this app provides a user-friendly solution.