JSON vs XML: Which Should You Choose?
Both JSON and XML are data-interchange formats. This article compares them on readability, size, parsing difficulty and ecosystem to help you choose.
Readability: both can express hierarchical data, but JSON has a simpler syntax without XML’s paired tags, making it easier on the eyes.
Size & parsing: for the same information JSON is usually shorter and parsing is more direct; XML must parse a tag tree, costing a bit more in size and parsing.
Expressiveness: XML supports attributes, namespaces, CDATA, and comments, suiting complex document data; JSON’s structure is simpler and better for structured data (especially APIs).
Recommendation: prefer JSON for front-end/back-end APIs, config, and mobile communication; keep XML where strong validation, documentation, or an existing XML ecosystem (e.g. legacy enterprise systems, RSS) is required.