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Demo for React.js and Keycloak SSO integration.

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Keycloak React.JS Demo

Demo for React.JS and Keycloak SSO integration.

YouTube videos

There are three videos on YouTube about this demo repository and how to integrate your React.js based application with Keycloak:

Part 1: Configuration & Usage, w/o 3rd party libs

Part 2: Conditional rendering of components

Part 3: React Router Integration, depending on Keycloak Roles

Please check out also my entire Youtube Channel with various videos on Keycloak and stuff around:

Silent Check-SSO feature

This demo comes now with the

silent check-sso
feature, introduced in version 8.x of the Keycloak JavaScript adapter. Therefor, see
and of course the official Keycloak docs of the JavaScript adapter.

(Silent check-sso is not the same as silent refresh for implicit flow! Implicit flow is today considered as insecure and shouldn't be used anymore. Instead, use standard authorization code flow with PKCE, which is also supported by Keycloak since version 7.x.)


  • based on React version >= 16.8 (using hooks) and
  • Keycloak server must be at least version 9.x (no more legacy Keycloak promise API, only native promise API)

!!! Important Notice !!!

This demo is just for showing one possibility on how to configure the app when using Keycloak and it requires a certain knowledge about Keycloak SSO (installation, operation, configuration), see

Backend service

For convenience, I provide a backend service running at the location specified in


However, there's also a swagger spec (

) providing the API of the needed backend, so you can spin up a service on your own. The URLs in the

section shows my local Keycloak setup, you have to adjust this possibly! (Also don't forget to adjust the host/port in the
file, if you run your service on ohters than default.)

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