Free tool
What Spider Is This? Free Spider Identifier
Upload a photo and find out what spider you found.
Most spiders people find indoors are harmless, but "harmless" is hard to believe while one is sitting on the wall. Upload a photo and get the species, plus a plain note on whether it bites or is venomous.
Confidence:
Want the full profile?
Habitat, diet, behavior and a follow-up chat — in the app.
AI identification from a single photo. Accuracy depends on the photo — treat an uncertain result as uncertain.
Get the app for more identifications
Animal Identifier gives you 2 free identifications a day, no signup.
- 2 free identifications every day
- Habitat, diet and behavior for every find
- Ask follow-up questions about the animal
- Your identifications saved in one place
Frequently Asked Questions
Can it tell me if a spider is dangerous?
It returns a short factual note on whether the species is venomous or known to bite. That is identification information, not medical advice — if you have been bitten and are having a reaction, contact a doctor or poison control rather than an app.
How do I photograph a spider I do not want to get close to?
Use your phone camera zoom and get the sharpest shot you can from a safe distance, then crop in. Leg pattern, body shape and the arrangement of markings carry most of the identifying detail, so a clean top-down or side view is worth more than a close shot that is blurred.
Is this spider identifier free?
Yes. You get one free identification here with no account and no signup. For more, the Animal Identifier app gives you 2 free identifications a day.
How do I take a photo that actually works?
Fill the frame as much as you safely can and keep it in focus. Most failed identifications are photos taken from too far away. A sharp close-up beats a wide shot every time, and a second angle helps when the first is ambiguous.
Does it work offline?
No. Identification runs in the cloud, so you need an internet connection — both here and in the app.
How accurate is it?
It depends almost entirely on the photo. A clear, close, well-lit image of a distinctive species usually returns a confident answer. A blurry or distant shot of something with close relatives often cannot be resolved from the image alone, and it is better to know that than to be given a confident guess.