Currently, most IDC vendors in China, such as Alibaba Cloud and Tencent Cloud, provide image processing APIs (such as pornography detection). When the server is located in China, it is best to use the IDC's own image processing service. However, when the business is hosted overseas, calling the APIs of Chinese vendors can be very slow. In this case, it is necessary to consider using foreign APIs as alternatives.

Original Intention

Finding free APIs is to provide image pornography detection for ImgURL. After searching for several options, xiaoz finally found the following two options which are quite good. Developers in need can refer to them.

Moderate Content

Moderate Content is the image pornography detection solution currently used by ImgURL. There is no limit on the number of calls, and it provides third-party plugins and API support. Moderate Content is not limited to image pornography detection, it also provides other functionalities, as follows:

• Detecting inappropriate content - adult, teenager, everyone, hate speech
• Detecting faces
• Detecting gender
• Detecting age
• Safe box - a place to submit misclassified images
• Animation GIF support
• Image types: .jpg .png .bmp .gif .webp
• Maximum image size: 10 MB
• Protocols: HTTP | HTTPS |
• Request types: GET | POST | POST multipart/form-data | POST application/json

Moderate Content official website: https://www.moderatecontent.com/

sightengine

sightengine offers a free version with a limit of 2000 calls per month and no more than 500 calls per day. If you don't have many images, it is completely sufficient. The image recognition features of sightengine are as follows:

sightengine also provides API statistics in the backend, which clearly records each of your requests, as shown in the screenshot below.

sightengine official website: https://sightengine.com/

Others

If you have collected good image recognition APIs, feel free to leave a comment and recommend them.