As a software developer that deals much with RESTful API, reading raw JSON data on browser can be a pain. It always easier  to read a well formatted JSON in tree view than  in raw data format. Luckily, Chrome has some extensions that could format raw JSON data into tree view format that can be read easily. Here i’ll will show  four best Chrome extensions for reading JSON on Chrome browser, most of them work perfectly and very easy to use.

1. JSONView
   This extension is a porting from original JSONView Firefox extension and supports JSONP. It validates JSON using a client-side javascript implementation of JSONLint and compliant with rfc 4627.
   JSONView  supports syntax highlighting and displays JSON in tree view where the nodes on the tree can be collapsed and expanded by clicking on the plus (+) or minus (-) sign on  the left of each node.
   
2. JSONFormatter
   JSONFormatter supports syntax highlighting and displays JSON in tree view where the nodes on the tree can be collapesed and expanded by clicking on the triangle icon on the left of each node. It also provides a button for switching to original (raw) data.
   
3. PrettyJSON
   PrettyJSON supports syntax highlighting and displays JSON in tree view. Unlike the two previous extensions, the nodes on the tree can not be collapsed and expanded. And because of it doesn’t check for a valid content type (application/json), it will not format JSON data that comes from a URL without ‘json’ appended. For example, it will display correctly the JSON data that comes from http://example.com/data.json but will not work if the JSON data comes from http://example.com/data.php.
   
   
4. JSON Prettifier
   JSON Prettifier  supports syntax highlighting and displays JSON in tree view where the nodes on the tree can be collapsed and expanded by clicking on the plus (+) or minus (-) sign on  the left of each node. It also has a button for switching to original (raw) data.
   

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