SP REST JSON modifies the accept property in the request header for SharePoint REST API calls to get the response in JSON format and to show it directly in Firefox instead of downloading a XML file. Works for on-premises and SharePoint online.

SP REST JSON is a Firefox add-on that allows you to modify the accept property in the request header for SharePoint REST API calls. It changes the response format to JSON and enables direct viewing in Firefox instead of downloading XML files.
By: DDesch
Users: 133 ▼ -7
Rating: 5.00 (1)
Version: 1.5.1 (Last updated: 2022-08-24)
Creation date: 2018-11-26
Weekly download count: 6
Firefox on Android: No
Risk impact: High risk impact
Risk likelihood: Low risk likelihood
Manifest version: 2
  • <all_urls>
  • activeTab
  • tabs
  • storage
  • webRequest
  • webRequestBlocking
Size: 72.64K
URLs: Website
Stats date:

Other platforms

Not available on Chrome
Not available on Edge
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Once a tab is active, the current URL is matched against the following strings:

  • /_api/web/
  • /_api/site/
  • /_api/sp.
  • /_api/search
  • /_vti_bin/ListData.svc
At a match the accept property in the request header is changed to 'application/json;odata=verbose' per default.

Global Options

  • Add or change SharePoint URL filters
  • Set the accept header per URL filter
In the Global options the following options can be chosen:
  • application/json;odata=verbose
  • application/json;odata=minimalmetadata
  • application/json;odata=nometadata
  • text/xml
User reviews
This extension makes debugging the REST API possible with FireFox since MS decided to use an ATOM/XML content type and hose FF apparently by default. Thank you!
View all user reviews
Risk impact

SP REST JSON is risky to use as it requires a number of sensitive permissions that can potentially harm your browser and steal your data. Exercise caution when installing this add-on. Review carefully before installing. We recommend that you only install SP REST JSON if you trust the publisher.

Risk likelihood

SP REST JSON has earned a fairly good reputation and likely can be trusted.

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