PIE (English Learner's Edition) is a Chrome extension developed by The PIE Project. It aims to assist English learners in improving their pronunciation by adding diacritics to English words, making their pronunciation crystal clear. The extension follows a one-page, easy-to-learn scheme that is based on the International Phonetic Alphabet (IPA), which is familiar to most ESL learners worldwide.

Designed specifically for people learning English as a second language, PIE (English Learner's Edition) focuses on correct pronunciation, which is also crucial for spelling. It offers five different modes, including Full, Less Full, Medium, Lite, and Extra Lite, catering to users of varying English proficiency levels. The modes for advanced learners display fewer diacritics, allowing them to gradually enhance their pronunciation skills.

In addition to PIE (English Learner's Edition), The PIE Project also offers another useful Chrome extension called Word Translator. This free extension enables users to not only access the pronunciation of English words but also obtain their meaning in their native language. For English learners seeking comprehensive language support, Word Translator is a valuable tool.