What Is ESP32 Web Server?


Larry Thompson

The ESP32 Web Server is a feature-rich microcontroller board that allows you to host and control web pages on your local network. It is based on the powerful ESP32 chip, which combines Wi-Fi and Bluetooth capabilities with a dual-core processor, making it perfect for building IoT projects and web-based applications.

Why Use the ESP32 Web Server?

There are several reasons why the ESP32 Web Server is a popular choice among developers:

  • Easy to set up: The ESP32 Web Server comes with built-in libraries and examples that simplify the process of creating and hosting web pages. Even if you’re new to web development, you can quickly get started.
  • Flexible connectivity options: With Wi-Fi and Bluetooth capabilities, the ESP32 Web Server can connect to your local network or interact with other devices wirelessly.

    This opens up possibilities for remote control, data logging, and real-time monitoring.

  • Powerful processing: The dual-core processor of the ESP32 ensures smooth performance even when running complex web applications. You can handle multiple requests simultaneously without compromising speed or stability.
  • Built-in security features: The ESP32 Web Server supports secure connections using HTTPS protocols, providing encryption for data transfer. This is especially important when handling sensitive information or accessing resources remotely.

Getting Started with the ESP32 Web Server

To start using the ESP32 Web Server, you’ll need an ESP32 development board and access to the Arduino IDE. Here are the steps to set it up:

  1. Install the ESP32 Board in Arduino IDE:
  2. If you haven’t done so already, you’ll need to install the ESP32 board in the Arduino IDE. Open the IDE, go to “File” > “Preferences” and add the following URL to the “Additional Board Manager URLs”:


    Then, go to “Tools” > “Board” > “Boards Manager”, search for “ESP32”, and install the ESP32 board package.

  3. Create a New Sketch:
  4. In the Arduino IDE, create a new sketch by going to “File” > “New”.

  5. Import Necessary Libraries:
  6. To work with the ESP32 Web Server, you’ll need to import specific libraries.

    Go to “Sketch” > “Include Library” > “Manage Libraries”. Search for and install the following libraries:

    • ESPAsyncWebServer
    • WiFi
  7. Set Up Wi-Fi Credentials:
  8. In your sketch, define your Wi-Fi credentials by adding the following code snippet:

    const char* ssid = "Your_SSID";
    const char* password = "Your_PASSWORD";

    Replace ‘Your_SSID’ with your Wi-Fi network name and ‘Your_PASSWORD’ with your network password.

  9. Create Web Server Routes:
  10. To handle different web page requests, you’ll need to define routes. For example, you can create a route for the home page (“/”), a route for handling form submissions (“/submit”), and so on. Use the following code as a starting point:

    AsyncWebServer server(80);
    void setup() {
    // ..
    server.on("/", HTTP_GET, [](AsyncWebServerRequest *request){
    request->send(200, "text/html", "

    Welcome to my ESP32 Web Server!

    // .

  11. Start the Web Server:
  12. In the setup function of your sketch, start the web server by adding the following code:

    void setup() {
    // .begin();

  13. Upload and Test:
  14. Connect your ESP32 board to your computer and upload the sketch. Open the Serial Monitor to view the IP address assigned to your ESP32 board. Enter this IP address in your web browser, and you should see your web page.


The ESP32 Web Server is a powerful tool for hosting and controlling web pages on your local network. With its easy setup process, flexible connectivity options, powerful processing capabilities, and built-in security features, it is an excellent choice for IoT projects and web-based applications. By following the steps outlined in this tutorial, you can quickly get started with building your own ESP32-powered web server.

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