extension ExtPose


CRX id


Description from extension meta

A simple, easy to use HTTP client to send API requests from within Chrome and see formatted, syntax highlighted responses.

Image from store JaSON
Description from store Great for testing and debugging JSON and XML APIs, RESTful APIs, GraphQL APIs, web services, web applications and more. Cookie support: Automatically sends cookies from Chrome. This is extremely handy for APIs which require authentication. Simply authenticate via your browser as normal and JaSON will send cookies for requests which match. HTTP methods: GET, POST, PUT, PATCH, DELETE, HEAD, and OPTIONS Dark/light theme: Change the colour theme to suit your work environment. Request history: Keeps request history with full text search. Individual history items can be deleted, or marked as a "favourite" for easy access. History from previous versions of JaSON will be automatically migrated. Stores history in IndexedDB for improved performance. Formatted input/output: Provides an IDE like experience when editing request body and headers. Automatically formats request/response body syntax and colour based on content type. Content type: Supports JSON, XML, and form encoded data by default. Additional content types can be used by setting a custom content type header. New and improved: Completely re-written, new styling, layout, colours, additional features and improved performance. 100% open source Source code is available from GitHub. Privacy policy https://github.com/shanebell/JaSON/blob/master/privacy-policy.md

Latest reviews

  • (2019-06-27) Karin van Heerwaarden: Defo my fave json tool. Keep up the great work Shane Bell.
  • (2019-06-18) Ever Cuevas: Muy buena, gracias por tan excelente extensión
  • (2018-02-08) Chan Go: Genial
  • (2018-02-08) Developer C C: Altamente recomendable
  • (2018-01-25) Luis Flores: COOL

Latest issues

  • (2021-03-12, v:5.0.23) Konstantin: request failed - is there a timeout threshold?
    Hi! I'm testing a GET call that takes longer than a minute to execute, and I always get "request failed" and a number like "60024" next to it in JaSON. With other tools like curl, however, I can get the response. Is there a some kind of a timeout? If so, how can I change it? Thanks!
  • (2020-05-30, v:5.0.4) Bascamao Quintana: Request header too small for tokens
    Hi, I have tried to prove a restful service where a token is required in the header. But it is impossible fill the Authorization header because the size of the "Request headers" The field is like Authorization: Bearer + <token o 1432 characters> But the "Request headers" only allows -> Authorization: Bearer + <token of 979 characters> My version is v5.0.3 Thanks in advanced. Marcos
  • (2018-09-04, v:4.0.0) Add a 'send request twice' button
    So many times you're testing concurrency and how your app behaves with concurrent requests. I think this would be a game changer ;-)
  • (2018-07-19, v:4.0.0) Alejandra Samayoa: no abre
    como se puede abrir no se como
  • (2018-04-19, v:4.0.0) Potassium OH: ฺBug format
    if end of line in response box is comma(,) your program will cut it out


7,727 history
4.4 (40 votes)
Last update / version
2021-04-23 / 5.0.25
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