It uses a hybrid mapping + rule-based engine . It doesn't just swap one letter for another (which fails for Gopika). It reads the flow of the text to understand if a half-letter (Ardha-Akshar) is intended.
is a popular non-Unicode (legacy) Gujarati font known for its clean, professional appearance in print media. Unlike modern Unicode fonts (such as Shruti or Noto Sans Gujarati), legacy fonts like Gopika use unique character encoding that often doesn't display correctly on websites or mobile devices unless the specific font is installed. Why You Need a Unicode Font Converter Free Gujarati Unicode Text Gopika Font Converter BEST
Advanced converters allow users to save their results directly as .doc or .txt files. It uses a hybrid mapping + rule-based engine