A photo of a resume is not necessarily a photo of a certificate. It can only be said that the size of the certificate photo is suitable for making a resume photo, and so is your life photo. If it is too big, attach it to your resume. You don't have to post it, but you must be able to see your face clearly in the photo. It's best not to bring a sun hat or sunglasses. In addition, the dress for the interview depends on your interview progress and the position you are applying for. Judging from the interview progress, if it's just a preliminary test, people who attend the interview are generally middle-level personnel in the personnel department, and there may be middle-level personnel in the employing department, so you don't have to dress formally, you can dress appropriately, generously and neatly. However, if it's the final exam, all the interviewees are the senior managers and the chairman of the enterprise, so it's best to dress formally, because people at this level will generally wear more clothes to take part in this final exam. From the position, if you are applying for some administrative and sales positions and need to meet other internal employees or external customers, you should dress formally or professionally to show your professionalism. If you are applying for design, network and software development, you don't have to dress formally, because this kind of occupation needs divergent thinking. If you dress too formally, you will feel unimaginative, innovative or outdated. If you apply for a position of manager or above, you should dress formally from the beginning, so as to show that you are a professional manager or manager. (typing for a long time exhausted me ~ ~)