# Why the Server Checks Again

The browser's checks help people fill in a form, but anyone can switch them off, so the server that receives the answers must check every one again.

![Codey's cheat sheet for Why the Server Checks Again: The browser's checks help people fill in a form, but anyone can switch them off, so the server that receives the answers must check every one again.](https://fsdtrainingmedia.blob.core.windows.net/public/images/2026/10/72784bc8d8644ef295ee197f661baf67.webp)

- Category: HTML
- Level: Journeyman
- Tags: Client-Side Validation, html, Server-Side Validation, web-development
- Updated: October 31, 2026

Source: https://www.ask-codey.com/cheat-sheets/html-forms-why-the-server-checks-again-cheat-sheet