Most STD symptoms are not so specific that you can look at STD pictures and identify which STD is causing them. Even the symptoms that are clearly identifiable in person might not always be recognizable in STD pictures - if you could find an informed medical practitioner who was willing to look at them. Bad photography and uncertainty are not worth risking a malpractice suit over, which is yet another reason why most health care providers will not diagnose you except in person. In their offices they can give you a proper examination and perform any necessary diagnostic tests (e.g. a biopsy or bacterial culture) rather than relying on guesswork based on a hope that the photograph was taken with good lighting.
If you want to be tested for STDs, you have numerous options. You can go to your doctor or a free clinic and, for certain diseases, even arrange to be tested online (although such tests still require you to either go to a lab or for samples to be sent in.) You can not, however, be tested for STDs by e-mailing your STD pictures to me. I am a researcher, not a physician, and even if I were a health care provider I would not be willing to diagnose you through photos sent to me over the Internet.
I also recommend against posting your STD pictures on the web. Doing so is not only unlikely to lead to a useful diagnosis, it could lead to personal or professional problems. The truth is that most website visitors are not qualified to make a diagnosis, and, even if they could look at your STD pictures and tell you what was wrong, there is no way for them to prescribe treatment. Plus, you never know who is looking at your pictures and giving you their opinion. It's just as likely to be your boss or a bored teenager as it is to be a nurse or doctor and joke or folk treatments can be actively harmful when misused for genital symptoms. Do you really want to take those kinds of chances with your sexual health?
In my opinion, STD pictures are really only useful when they are pictures from people with known diagnoses. STD pictures that come with medically verified captions can sometimes help people develop a rough idea of what may be going on with their bodies. Still, even those pictures are not always useful or helpful, because every person's body is different and symptoms will not always look the same. In all honestly, looking at STD pictures and trying to diagnose yourself is as likely to give you a false estimate of your safety or scare you unnecessarily as it is to actually provide you with an accurate understanding of your state of health or disease.
