I’m new to Python Flask, and when I run my web app using the Flask development server in VS Code, I keep seeing this in the terminal:
GET /favicon.ico HTTP/1.1" 404
What exactly is favicon.ico, and why is Flask returning a 404 error for it?
Do I need to create one or configure something to get rid of the error?
Just trying to understand if it’s something critical or can be ignored in development.
Browsers automatically try to fetch /favicon.ico even if you haven’t added one, it’s just part of the default behavior.
If Flask doesn’t find a file at that path, it returns a 404.
It’s harmless during development but if you want to avoid the warning altogether, just drop a small icon file named favicon.ico inside your static folder and link it like this in your HTML:
html
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<link rel="icon" href="{{ url_for('static', filename='favicon.ico') }}">
This tells the browser exactly where to look, and Flask won’t try to guess anymore.