Portrait HD restoration, group photo HD restoration, individually restore each person's face with 99.9% similarity without changing the original features of each face.

The advantage of this workflow is that the similarity of 99.9% ensures that the features of each face will not be altered, keeping the characters very close to the original image. It avoids changing the shape of the facial contours, eyes, nose, and mouth in pursuit of high definition, which could result in a completely different appearance. If the original image is very blurry, it can be repaired once and then repaired again if necessary.
For standalone high-definition portrait restoration, you can use: https://www.runninghub.cn/ai detail/1906435334542905346
For landscape photo restoration (photos without people): https://www.runninghub.cn/ai detail/1906717532584300545