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All You Need to Know about MUI Loading to Elevate Apps

In the dynamic landscape of web applications, the need for loading indicators has become paramount. As users navigate through various online experiences, they expect instant feedback and responsiveness. Loading indicators, like MUI loading, play a pivotal role in meeting these expectations by providing users with clear signals that processes are underway, mitigating frustration and uncertainty.

Consider a real-world scenario where a user submits a form or initiates a data-fetching task and if that operation will take some time, Without a loading indicator, users might be left in the dark, unsure whether their request is being processed. Loading indicators bridge this communication gap, offering a visual cue that assures users their actions are in progress.

Real-World Examples

Take, for instance, popular applications like e-commerce platforms or social media networks. When users performs activity like uploading images, post comments, or perform searches, loading indicators communicate the system’s responsiveness and status of ongoing processes, enhancing the overall user experience. A well-designed progress component not only fulfils a functional role but also contributes to the aesthetic appeal of an application, aligning with modern design principles.

In this exploration of Material UI Loading in React, we’ll delve into the intricacies of these loading indicators, understanding their features, implementation, and the art of crafting a seamless user experience. Let’s learn how Material UI Progress components elevate the responsiveness of web applications, creating interfaces that not only function flawlessly but also delight users with their design finesse.

Understanding MUI Loading

Material UI Loading components form a crucial part of the Material UI framework, designed to seamlessly handle progress indicators in React applications. These components play a pivotal role in enhancing the user experience by providing visual cues about ongoing processes. At its core, Material UI adopts a comprehensive approach to handling progress. This ensures that developers have a diverse set of tools to convey different types of loading scenarios effectively.

In addition, get to know more about Material UI in this free Material UI CrashCourse. It offers basic to advanced knowledge of Material UI Framework with hands-on examples.

Explanation of various types of progress indicators available

From linear progress bars to circular loaders, MUI Loading components cater to a variety of application needs.

Linear progress bars are ideal for showcasing the progression of a task, such as form submissions or file uploads. They offer a clear visual representation of how much of the process is complete.

Circular loaders, on the other hand, are best for scenarios where the duration of the task is uncertain. Their circular animation assures users that something is happening in the background, creating a sense of anticipation.

Getting Started with MUI Loading

  1. Installing Material UI in a React Project: Begin by installing Material UI in your React project. You can easily do so by running the following command:

    npm install @material-ui/core @emotion/react @emotion/styled

    This command installs the necessary dependencies for Material UI to seamlessly integrate with your React application.

  2. Adding Material UI Progress Components: Once Material UI is successfully installed, you can start incorporating Material UI Progress components into your project. Import the necessary components at the beginning of your React file:

    import React from 'react'; 
    import LinearProgress from 'material-ui/core/LinearProgress'; 
    import CircularProgress from '@material-ui/core/CircularProgress';

  3. Basic Usage of Material UI Progress: With the components imported, you’re ready to use Material UI Progress in your application. For a linear progress bar, you can include the following code:

    const LinearProgressBar = () => { return <LinearProgress />; };

    Similarly, for a circular progress indicator:

    const CircularProgressBar = () => { return <CircularProgress />; };

    These examples represent the fundamental usage of Material UI Progress components, offering a glimpse into their simplicity and effectiveness.

This section not only lays the foundation for incorporating Material UI Progress but also ensures that you grasp the basic concepts of installation, component addition, and initial usage, setting the stage for more advanced exploration in the subsequent parts of this article.

MUI Loader Basic Customization

MUI Progress root

The Material UI (MUI) Progress component also provides utility classes for easy styling and customization. Two key classes, MuiLinearProgress-root and MuiCircularProgress-root, target the root element of the Linear and Circular Progress components, respectively.


This class allows customization of the Linear Progress component’s root element.


import LinearProgress from '@mui/material/LinearProgress';
import CircularProgress from '@mui/material/CircularProgress';

const CustomLinearProgress = () => {
  return (
<CircularProgress className="MuiCircularProgress-root" />
<LinearProgress className="MuiLinearProgress-root" />);

In this example, the MuiLinearProgress-root class is applied to the Linear Progress component, providing the flexibility to add specific styles or adjustments to its root element. Similarly, the MuiCircularProgress-root class targets the root element of the Circular Progress component.

By using these classes, developers can easily style the root elements of Linear and Circular Progress components, ensuring a cohesive and visually appealing design. These utility classes simplify the customization process, allowing for a seamless integration of Material UI Progress components into your React applications.

MUI Loading color

The color property in the Material UI (MUI) Progress component is a powerful tool for customizing the appearance of progress indicators. It allows developers to assign different colors to the progress bar, providing visual cues to users about the status of an operation.


import LinearProgress from '@mui/material/LinearProgress';

const ColoredLinearProgress = () => {
  return (
<LinearProgress color="primary" />;
<LinearProgress color="secondary" />;

In this example, the color property is set to “primary” and “secondary,” indicating that the progress bar will have the secondary color from the theme. MUI supports various color options such as “error,” and “info,” among others.

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Advanced Progress Handling: Customization and Styling

Material UI Progress components offer not only functionality but also an extensive range of customization options, allowing you to tailor the appearance of progress indicators to suit your application’s design. In this section, we’ll delve into the realm of customization and explore various styling options. We also provide you with practical code examples.

  1. Styling Material UI Progress Components:

    Customizing the appearance of progress indicators involves adjusting their color, size, and other visual attributes. Here’s an example of styling a linear progress bar with a specific color:

    import LinearProgress from "@mui/material/LinearProgress";
    import { styled } from "@mui/system";
    const StyledLinearProgress = styled(LinearProgress)({
      backgroundColor: "#e0e0e0",
      "& .MuiLinearProgress-barColorPrimary": { backgroundColor: "#4caf50" },
    const StyledProgressBar = () => {
      return <StyledLinearProgress />;

    This example showcases how you can use the styled utility from Material UI to apply custom styles to a Linear Progress component.

  2. Variant Determinate Example with Determinate Value:

    The variant=”determinate” in Material UI Progress components is used when you have a specific, known duration or progress value that you want to represent visually. It allows you to set a determined completion percentage, giving users a clear indication of the progress towards completion.

    Real-World Example: File Upload Progress

    MUI Loading component are most commonly seen when user is performing processes such as loading. Consider a file upload feature in a web application. When users upload a file, the application needs to show the progress of the upload to keep users informed. In this scenario, the variant=”determinate” is valuable.

    Let’s break down how this would work:

    1. Initialization:

      • When a user initiates a file upload, the application sets the initial progress to 0%.

      <LinearProgress variant="determinate" value={0} />
    2. Upload Progress Update:

      • As the file upload progresses, the server or client-side logic updates the completion percentage.

      • Suppose the upload is 25%, 50% or 75% complete. You dynamically update the value prop:

      <LinearProgress variant="determinate" value={25} />
      <LinearProgress variant="determinate" value={50} />
      <LinearProgress variant="determinate" value={75} />
    3. Completion:

      • Once the file is fully uploaded, the progress reaches 100%, indicating that the task is complete.

      <LinearProgress variant="determinate" value={100} />

Example with complete code to update progress dynamically using determinate value progress

import * as React from 'react';
import Box from '@mui/material/Box';
import LinearProgress from '@mui/material/LinearProgress';

export default function LinearDeterminate() {
  const [progress, setProgress] = React.useState(0);

  React.useEffect(() => {
    const timer = setInterval(() => {
      setProgress((oldProgress) => {
        if (oldProgress === 100) {
          return 0;
        const diff = Math.random() * 10;
        return Math.min(oldProgress + diff, 100);
    }, 500);

    return () => {
  }, []);

  return (
    <Box sx={{ width: '100%' }}>
      <LinearProgress variant="determinate" value={progress} />
  • The component starts with an initial progress state of 0.

  • The useEffect hook is used to create an interval that updates the progress every 500 milliseconds.

  • The setProgress function is used to update the progress state.

  • If the progress reaches 100%, it resets back to 0, simulating a continuous and repeating progress.

  • The LinearProgress component is rendered with the determined progress value.

Example with Backdrop in Progress:

Enhance the user experience by overlaying a backdrop behind the progress indicator. This indicates that the application is busy with a task. Here’s an example of a circular progress indicator with a backdrop:

import CircularProgress from "@mui/material/CircularProgress"; import Backdrop from "@mui/material/Backdrop"; const ProgressWithBackdrop = () => {   return (     <div>       {" "}       <Backdrop open={true}>         {" "}         <CircularProgress color="inherit" />{" "}       </Backdrop>{" "}     </div>   ); };

The Backdrop component creates a subtle overlay, drawing attention to the ongoing process.

These examples demonstrate the versatility of Material UI Progress components. This allows you to seamlessly integrate them into your application while ensuring they align with your desired visual style. Customize, style, and enhance the user experience with these advanced handling techniques.

We have handpicked a Material UI Loading Tutorial. You can go through this video tutorial if you wish to recap these concepts further and get some hands-on experience.

Best Practices and Tips

When incorporating Material UI Progress into your React applications, it’s essential to follow best practices for smooth user experience. Here are some key practices and tips to consider:

Key Practices and TipsDescription
Responsive DesignDesign progress indicators to be responsive, adapting to various screen sizes.Utilize Material UI Progress’ responsive features for optimal visibility across different devices.
Accessibility MattersEnsure progress components are accessible to all users, including those with disabilities.Leverage Material UI’s built-in accessibility features and ARIA attributes for meaningful information to assistive technologies.
Optimal MUI Loading ExperienceChoose the appropriate type of progress indicator (linear or circular) based on the application context.Implement loading indicators with consideration for user wait time, providing a visual cue without causing frustration.
Clear and Informative MessagingAccompany progress indicators with clear, concise messages to inform users about the ongoing process.Use tooltips or labels for additional context, helping users understand the purpose of the progress.
Consistent StylingMaintain a consistent visual style across the application by adhering to a unified design system.Customize the appearance of Material UI Progress components to align with the application’s overall theme and branding.
Efficient Code ManagementOrganize code by encapsulating progress-related logic into reusable components.Leverage React’s modular structure for efficient state and update management, promoting maintainability and scalability.
Testing and Performance OptimizationThoroughly test progress components under different scenarios to ensure expected functionality.Optimize performance by minimizing unnecessary updates and re-renders, especially with determinate progress.

By following these best practices, you can elevate the usability of Material UI Progress in your React applications, creating a more engaging and user-friendly interface. These tips aim to enhance the overall user experience, making progress indicators a valuable and seamlessly integrated aspect of your application.

Final Comments on Material UI Progress

In this comprehensive exploration of Material UI Progress in React, we’ve delved into the essential aspects of creating efficient and visually appealing progress indicators. To recap, we began by understanding the importance of loading indicators in web applications and witnessed real-world examples highlighting their significance.

As we navigated through Material UI’s extensive set of features, we uncovered the versatility and ease of use provided by Material UI Progress components. From the fundamental installation steps to advanced handling and customization, we’ve equipped you with the knowledge to integrate these components seamlessly into your projects.

I encourage you, dear readers, to embrace Material UI Progress for an elevated UI/UX design. Its responsive design, accessibility features, and customization options empower you to create loading experiences that not only serve a functional purpose but also contribute to a positive user perception.

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Yash Poojari

Yash Poojari