Last updated: April 7, 2026
HTTP vs HTTPS — What's the Difference?
Quick Answer
HTTPS is HTTP with TLS/SSL encryption. HTTP sends data in plain text — anyone on the network can read it. HTTPS encrypts all data in transit, verifies server identity via certificates, and prevents man-in-the-middle attacks. Every website should use HTTPS — Google requires it for SEO, and browsers show "Not Secure" for HTTP sites.
HTTP vs HTTPS — Side by Side
| Feature | HTTP | HTTPS |
|---|---|---|
| Encryption | No — plain text | Yes — TLS encryption |
| Authentication | No server identity verification | Certificate verifies server identity |
| Port | 80 | 443 |
| Data integrity | No — data can be modified in transit | Yes — TLS MAC prevents tampering |
| SEO | Penalized by Google | Positive ranking signal |
| Browser warning | "Not Secure" in address bar | Padlock icon |
| Speed | Slightly faster (no handshake) | TLS 1.3 minimizes overhead |
| Cookie security | Cookies can be stolen | Secure + HttpOnly cookies protected |
Verdict
Always use HTTPS. There is no legitimate reason to use HTTP for any website in 2026. Free TLS certificates from Let's Encrypt, automatic HTTPS from Vercel/Netlify/Cloudflare, and performance improvements in TLS 1.3 eliminate any remaining arguments for HTTP.
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