Upload a clear photo
Choose a close-up image of the affected skin from your phone or computer.
Free online tool and bite guides
Compare a photo with common mosquito, tick, bed bug, flea, ant, chigger, and spider bite patterns. The free browser tool runs privately on your device and provides educational guidance, not a medical diagnosis.
What it does
Use the browser tool for a private visual comparison, then read the relevant guide for symptoms, first-aid information, and warning signs.
Choose a close-up image of the affected skin from your phone or computer.
The recognition model runs in your browser, so the selected photo is not uploaded to our servers.
Review educational information and learn which warning signs need professional attention.
Learn more
Compare appearance, typical symptoms, first-aid steps and signs that warrant medical advice.
Small, raised and often intensely itchy bumps.
Read the guideLearn about common ant stings and skin reactions.
Read the guideRecognition, careful removal and warning signs.
Read the guideCommon symptoms, first aid and when to seek help.
Read the guideItchy clusters that often appear around the lower legs.
Read the guideVery itchy red bumps from microscopic mites.
Read the guideGrouped or linear bites that may appear overnight.
Read the guide