Fig. 4: User interface of the mini-program for liver fibrosis screening based on tongue image analysis.

The mini-program comprises three sections: a the homepage, b the tongue image acquisition page, and c the result page. The original Chinese text in the interface has been translated into English, with translations provided according to the numbered annotations (①–⑨): ① Tongue Image-Based Liver Fibrosis Intelligent Evaluation System ② Upload tongue image ③ Rapid detection ④ Intelligent Analysis ⑤ Start ⑥ Ensure that the entire tongue is positioned within the shooting frame; Adequate lighting, no backlight, no exposure, no reflection; Make sure the tongue is not stained ⑦ Result ⑧ Tongue Analysis: Damp-heat syndrome, Tongue color: Red; Tongue coating color: Yellow; Cracks: None; Tooth marks: Yes; Tongue coating thickness: Medium; Greasy coating: Yes; Petechiae: None. ⑨ Screening Result: Liver fibrosis (+); Referral to hepatology is recommended.