1. View the image properties: By viewing the image properties on the computer or mobile phone, you can know the basic information of the image, such as shooting time, resolution and file size. In addition, some picture editing software can also view the metadata of pictures, including copyright information.
2. Use online tools: There are many online tools that can help you query the copyright information of images, such as TinEye and Google reverse image search.
3. Consult a professional: If the copyright of the picture is still uncertain, you can consult a professional, such as a lawyer or a copyright consultant.