Pinyinizer is a free Chrome extension developed by Shinya Fujino. It falls under the category of Browsers and specifically falls under the subcategory of Add-ons & Tools. The main purpose of Pinyinizer is to annotate 汉字 (Hanzi) on webpages with corresponding 拼音 (Pinyin) using ruby.

With Pinyinizer, users can easily detect and annotate 汉字 on any webpage. Simply click on the extension's icon, and all 汉字 on the page will be annotated with their corresponding 拼音 using ruby. This functionality is particularly useful for Chinese language learners who want to improve their reading and pronunciation skills.

Pinyinizer was primarily developed with the intention of assisting Chinese language learners. Its user-friendly interface and seamless integration make it a valuable tool for anyone studying the language. Whether you're a beginner or an advanced learner, Pinyinizer can enhance your learning experience. So why not give it a try and start annotating 汉字 with 拼音 today? 加油吧!