Privacy Policy

How Big Is This Fish estimates a fish's length and weight from a photo you upload. This is a plain explanation of what happens to your data.

Your photos. When you upload a photo, it's sent to Anthropic's API to be analyzed. We don't store your photos on our servers — once your result comes back, the photo is discarded. We don't use your photos to train any AI models.

Analytics. We collect basic, anonymous usage analytics to understand how the site is used. This doesn't identify you personally.

Ads. We don't currently show ads on this site, but we may in the future. If we do, those ads may use cookies.