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Photo Captcha API

PhotoCaptcha is an image based captcha used to prevent bots from posting to a website. It presents users with images as opposed to letters that can often be difficult to read. Users are asked to click a series of images from those presented instead of having to type letters. PhotoCaptcha is translated to English, Polish and Italian. PhotoCaptcha is implemented via JavaScript. In order to verify if captcha was solved correctly a user's script needs to contact the API sending PhotoCaptchaResponse and client's IP address. The API uses RESTful calls and responses are formatted in CSV.

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Photo Captcha: Highlights

Image based captcha service
Data Formats
API home

Photo Captcha: Specifications


Client Install Required
Service Endpoint

Signup and Licensing

Signup Requirements
Developer Key Required
Account Required
Commercial Licensing
Non-Commercial Lic.
Data Licensing
Usage Fees
Program Fees
Certification Program
Usage Limits
Terms of Service


Authentication Model
SSL Support
Read-only Without Login


Vendor API Kits
Community API Kits
API Blog
Site Blog
API Forum
Developer Support
Console URL

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