What is HTTP and HTTPS? How the Web Works
General • Concepts Explained • 6 min read
HTTP and HTTPS are how browsers and servers communicate. Learn methods, status codes, and why HTTPS matters.
What is HTTP and HTTPS? How the Web Works
Every time you visit a website, HTTP or HTTPS is involved. Understanding these protocols helps you build better web applications.
What is HTTP?
HTTP (HyperText Transfer Protocol) is how browsers and servers communicate. When you type a URL, your browser sends an HTTP request to a server, which responds with the website's content.
HTTP Methods
| Method | Purpose | Example |
|---|---|---|
| GET | Retrieve data | Load a webpage |
| POST | Send data | Submit a form |
| PUT | Update data | Edit a profile |
| DELETE | Remove data | Delete a post |
HTTP Status Codes
- 200 — OK (success)
- 301 — Moved permanently (redirect)
- 404 — Not found
- 500 — Server error
What is HTTPS?
HTTPS (HTTP Secure) is HTTP with encryption. It uses TLS/SSL to secure data in transit. The padlock icon in your browser means the site uses HTTPS.
Why HTTPS Matters
- Security — Encrypts data between browser and server
- Trust — Users see the padlock icon
- SEO — Google ranks HTTPS sites higher
- Required — Modern APIs require HTTPS
How to Get HTTPS
- Get a domain name
- Use a hosting provider with free SSL (Netlify, Vercel)
- Or use Let's Encrypt for free SSL certificates
Note: Always use HTTPS in production. It's free, easy to set up, and essential for security.