There are basically 2 areas where JSON is really wasteful. Compression can help with both of those. 1. Dictionary keys are repeated when you have an array of

There are basically 2 areas where JSON is really wasteful. Compression can help with both of those. 1. Dictionary keys are repeated when you have an array of similar objects. 2. Non-text data. JSON can't natively represent binary data, forcing people to use things like base64 for binary and base10 for numbers.