How can an existing json string be cleaned up/minfied? I've seen regexes being used. Any other (maybe more efficient) approach?

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Install-Package Newtonsoft.Json

Just parse it and then serialize back into JSON:

var jsonString = " { title: \"Non-minified JSON string\" } "; var obj = JsonConvert.DeserializeObject(jsonString); jsonString = JsonConvert.SerializeObject(obj);

SerializeObject(obj, Formatting.None) method accepts Formatting enum as a second parameter. You can always choose if you want Formatting.Indented or Formatting.None.

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