How is an image transmitted from the server to the user on a web page?

The image is transmitted from the server to the user on a web page usually via the HTTP protocol as a separate resource. The process looks like this:

1. In the HTML code of the page, an <img> tag is specified with a src attribute pointing to the image URL.

2. When the browser loads the page, it sees the <img> tag and sends a separate HTTP request to the server at the address specified in src.

3. The server processes the request and returns the image as binary data with the appropriate Content-Type header (e.g., image/png or image/jpeg).

4. The browser receives the data and displays the image on the page.

Example HTML:

<img src="/images/photo.jpg" alt="Photo">

If the server is written in Python (for example, using Flask), it can serve the image like this:

from flask import Flask, send_file
app = Flask(__name__)

@app.route('/images/photo.jpg')
def get_image():
    return send_file('path/to/photo.jpg', mimetype='image/jpeg')

Thus, the image is transmitted as a separate HTTP resource, which the browser loads and displays on the page.