Diffbot’s Image API doesn’t require any rules or training. All you need to do is to send an image-heavy page and you can sit back and let Diffbot evaluate image content, identify elements and generate tags. Its structured search ensures you only get matching results. The image API automatically evaluates image content and generates tags based on its identified elements.
Diffbot doesn't let you define custom tags. It however does allow you to assign relevant tags to all your images in an automated fashion.Imagga and Clarifai are two products you might be interested in. They both allow you to define custom tags. Clarifai has a free plan that lets you tag 5000... Show moreImage Tagging APIs