Understanding HTTPS and SSL/TLS

What is HTTPS?

HTTPS is the secure version of HTTP. It encrypts data between your browser and the server using SSL/TLS, preventing eavesdropping and tampering.

HTTP vs HTTPS

	HTTP	HTTPS
Encryption	None	Yes (TLS)
Port	80	443
Padlock	No	Yes
SEO	Penalized	Boosted

How TLS Works (Simplified)

1. Browser connects and requests a secure session.
2. Server sends its SSL certificate (public key).
3. They perform a "handshake" to agree on encryption keys.
4. All data is now encrypted.

SSL Certificates

A certificate proves a site's identity, issued by a Certificate Authority (CA). Let's Encrypt provides them free.

Why HTTPS Matters

• Protects passwords and payment data.
• Prevents man-in-the-middle attacks.
• Required for modern browser features.
• Boosts SEO rankings.

FAQs

Is HTTPS free?

Yes — Let's Encrypt issues free certificates. More in our Security section.

SSL or TLS?

TLS is the modern successor to SSL, though people still say "SSL."