Chín tạ is a free Chrome extension designed to enhance the accuracy of Vietnamese writing. It automatically detects and highlights spelling errors, diacritical marks, grammar issues, and punctuation errors in real-time across various platforms like Gmail, Google Docs, and Facebook. Users benefit from a streamlined experience, as the tool operates directly in the text input fields, eliminating the need to copy and paste text for corrections.

The extension features intuitive color coding to differentiate error types—red for spelling, blue for diacritics, orange for grammar, and purple for punctuation. Users can easily access correction suggestions by clicking on the underlined words. With convenient keyboard shortcuts for navigating between errors, Chín tạ is ideal for students, professionals, and anyone looking to improve their Vietnamese writing skills without slowing down their browsing experience.