PIE (Literacy Edition) is a Chrome extension developed by The PIE Project. It is a free program that aims to assist American children in learning to read by providing phonetic pronunciation guides through the use of diacritics. This extension automatically adds diacritics to English words, making their pronunciation crystal clear. The diacritics are based on a one-page, easy-to-learn scheme that is included in the extension.

The "Literacy Edition" of PIE is specifically designed for American children who are learning to read. It offers five different modes - Full, Less Full, Medium, Lite, and Extra Lite - catering to users with varying levels of literacy. The modes for advanced learners show fewer diacritics, allowing for a gradual progression in reading skills.

For individuals learning English as a second language, The PIE Project also offers an "English Learner's Edition" on their website. This edition utilizes a slightly different scheme that mimics the International Phonetic Alphabet (IPA) to help learners master correct pronunciation.

PIE (Literacy Edition) is a valuable tool for children learning to read, providing them with clear phonetic guides to enhance their reading skills.