SSL Certificate Buying Guide: DV / OV / EV Certificate Differences
SSL/TLS certificates are essential for HTTPS. Market prices range from free to thousands of dollars. What's the difference? Is more expensive more secure?
1. Three SSL Levels
1.1 DV (Domain Validation)
Validation: Domain ownership only
Speed: Minutes to hours
Price: Free - ¥500/year
Browser: 🔒 HTTPS
Providers: Let's Encrypt (free), Cloudflare SSL (free), ZeroSSL
1.2 OV (Organization Validation)
Validation: Domain + Business identity
Speed: 1-3 business days
Price: ¥500 - ¥2,000/year
Browser: 🔒 HTTPS
Providers: DigiCert, Sectigo, GlobalSign
1.3 EV (Extended Validation)
Validation: Strictest business verification
Speed: 3-10 business days
Price: ¥2,000 - ¥5,000+/year
Browser: 🔒 + Company name (older UI)
Providers: DigiCert, Sectigo, GlobalSign
2. Comparison Summary
| Feature | DV | OV | EV |
|---|---|---|---|
| Encryption | Same | Same | Same |
| Speed | Minutes | 1-3 days | 3-10 days |
| Price | Free-¥500 | ¥500-¥2,000 | ¥2,000-¥5,000 |
| Best for | Personal sites | Business sites | Finance, government |
Important: DV, OV, and EV certificates have IDENTICAL encryption strength. The difference is only in validation rigor.
3. Browser UI Changes
In 2026, EV certificates no longer show company names prominently in Chrome/Firefox/Safari. The visual trust signal advantage of EV has diminished significantly.
4. Buying Recommendations
Personal / Blog / Small Projects
Recommend: DV (Let's Encrypt free)
Reason: Same encryption, free, auto-renewal
Business / E-commerce
Recommend: DV with CDN, or OV
Reason: DV encryption is sufficient with CDN
Finance / Government
Recommend: OV or EV
Reason: Compliance, audit, brand protection
5. Free vs Paid
| Free (Let's Encrypt) | Paid |
|---|---|
| 90-day validity | 1-2 year validity |
| Auto-renewal needed | Manual or auto-renewal |
| DV only | DV/OV/EV available |
| No warranty | Warranty ($1,000-$10,000+) |
Conclusion: Free certificates are sufficient for most personal sites and SMEs.
6. Summary
DV certificates are identical to OV/EV in encryption security. Choose based on your needs and budget. The best SSL certificate is the one you properly configure and keep updated.