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JaSON
A simple, easy to use HTTP client to send API requests from within Chrome and see formatted, syntax highlighted responses.
Users3KCurrent public install base
Rating4.5Store average score
Reviews38Public review volume
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7-day growth--Net users gained this week
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1 assetsJaSON Media preview
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4.47
Latest
4.47
30-day rating change
0.00
2026年7月4日2026年7月5日
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A simple, easy to use HTTP client to send API requests from within Chrome and see formatted, syntax highlighted responses.
Reviews
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Reviews with text16Synced review bodies
Total reviews38Chrome Web Store public rating/review count
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I use this extension every single day, no kidding! It is simple and it works well. It formats the json response in a pretty format and when I copy the response it retains that nice formatting. The history is also extremely useful. I do not understand why google has now disabled this extension.
This extension provided exactly what I was looking for - the ability to test an API which responds to HTTP POST requests with JSON responses. One feature I love is that it remembers previous requests which makes it very easy to fire off an earlier request again or change the JSON body of the request and then do the same. Excellent!
I honestly love this extension <3
Just doing what he has to do.
Genial
Altamente recomendable
COOL
nice
It's a very simple interface, it should work without any problem but I cannot make it work. No matter how I try to create my json data the parameters don't seem to reach the php. So sorry because I really need this kind of tool.
cool.