Using client libraries
Learn the fundamentals of Cloud Vision API by interacting with it programmatically using the client libraries for your language of choice (C#, Go, Java, Node.js, PHP, Python, and Ruby).
Using the command line
Use the Vision API on the command line to make an image annotation request for multiple features with an image hosted on Google Cloud Storage.
Using API explorer
Use the embedded API Explorer to make Vision API requests without leaving the docs.