How to add Upvote buttons for your Docusaurus documentation website


This is a step by step guide to integrate Feelback with your Docusaurus website. With this guide you will add the Is your page useful widget with upvote buttons to your documentation pages.

Docusaurus documentation upvote button example

In this tutorial you will:

Step 1: Setup the Feelback project

If you don't have already a Feelback account, please signup and create one. It's free and doesn't require a credit card to use.

Access the Feelback panel, and create a project if you don't have any. Feelback panel projects

You can use your website name.

Feelback panel create project

After that, create a ContentSet which will contain your content and feedbacks you will receive.

Feelback panel create content-set

Pick the YesNo type to enable this content-set to receive Upvote signals.

Feelback panel content-set type

You will end up with a ContentSet like the following one:

Feelback panel content-set info

Step 2: Install the Feelback plugin

In your Docusaurus project directory, just install the @feelback/react package:

npm install @feelback/react

Step 3: Add the FeelbackYesNo component to the layout page

Now you are ready to add the Is this page useful? widget with upvote buttons. Let’s suppose you want the widget at the bottom of your sidebar.

To edit the default theme, in Docusaurus you have to run a procedure called Swizzling which allows to replace a builtin component with a custom one.

Perform the Docusaurus swizzle on the sidebar component

We want to wrap the current sidebar component and add the upvote buttons. For the Docusaurus default theme, the component is called: DocSidebar

In the your Docusaurus directory run:

npm run swizzle @docusaurus/theme-classic DocSidebar --wrap

This will copy the original component to your source folder at src/theme/DocSidebar so you can modify it.

Edit the component and add the Upvote/Downvote buttons

Now you can wrap the original component and add the widget for the YesNo feedback.


import React from 'react';
import DocSidebar from '@theme-original/DocSidebar';
import { FeelbackYesNo, PRESET_LIKE_DISLIKE } from "@feelback/react";

export default function DocSidebarWrapper(props) {
  return (
    <div className="feelback-sidebar" style={{ position: "relative", height: "100%" }}>
      <DocSidebar {...props} />

      <div style={{ position: "absolute", left: 0, right: 0, bottom: 0, padding: "1rem" }}>
        <FeelbackYesNo contentSetId="your-content-set-id"
          textQuestion="Is this page useful?"

Include the default Feelback style

Append the default style provided by the package at the end of your custom.css file.


 *  Your docusaurus custom css here

@import "@feelback/react/styles/feelback.css";

The result should be something like this:

Documentation upvote and downvote buttons

Additional documentation with all properties and customization you can use is available inside the dedicated React integration guide for each Feelback components.

Step 4: (Optional) Customize the component style

You can override the predefined style with additional CSS.

For example, you can add some selector to change the button icons size and set some custom value.


 *  Your docusaurus custom css here

@import "@feelback/react/styles/feelback.css";

.feelback-sidebar .feelback-icon svg {
  width: 22px;
  height: 22px;

.feelback-sidebar .feelback-q .feelback-text {
  flex-grow: 1;

Full documentation with advanced customization is available inside the React integration guide.


The @feelback/react package is open source and available on github. Any contribution is much appreciated. Issues, bug reports and feature requests are welcome. Do not hesitate to reach us or ask for help.

Additional resources

Other guides for Docusaurus