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Athreya aka Maneshwar
Athreya aka Maneshwar

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404 Not Found: What Does It Mean?

Hello, I'm Maneshwar. I'm building git-lrc, an AI code reviewer that runs on every commit. It is free, unlimited, and source-available on Github. Star Us to help devs discover the project. Do give it a try and share your feedback for improving the product.

If you’ve spent any time browsing the web, you’ve probably run into the infamous 404 Not Found error. It’s one of the most common HTTP responses—and one of the most misunderstood.

What is a 404 error?

A 404 Not Found error is an HTTP status code returned by a web server when the requested resource (like a webpage, image, or file) cannot be found.

In simple terms:
👉 The server is reachable, but the page you asked for doesn’t exist.

This is defined as part of the HTTP, which governs how browsers and servers communicate.

Why does it happen?

There are a few common reasons you might see a 404:

  • Broken or outdated links – The page was moved or deleted.
  • Mistyped URL – Even a small typo can lead nowhere.
  • Content removed – The resource no longer exists on the server.
  • Incorrect routing – Especially common in modern web apps.

404 vs Other Errors

Not all errors are the same. Here’s how 404 compares:

  • 404 Not Found → Resource doesn’t exist
  • 403 Forbidden → You don’t have permission
  • 500 Internal Server Error → Something broke on the server

Understanding this helps you debug faster instead of guessing blindly.

How developers handle 404s

Good applications don’t just show a boring error page—they turn it into a useful experience.

Common approaches include:

  • Custom 404 pages with helpful navigation
  • Redirecting users to relevant content
  • Logging missing URLs for fixes
  • Suggesting similar pages or search results

Final thoughts

A 404 error isn’t a “crash”—it’s just the web telling you, “That page isn’t here.”

Handled well, it can even improve user experience instead of frustrating it.

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Top comments (1)

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kamalhinduja profile image
Kamal Hinduja

The 404 error means page not found, That's why the 404 error comes.