SSL certificates come in three validation levels: DV (Domain Validation), OV (Organization Validation), and EV (Extended Validation). All three provide the same encryption strength — the difference is how thoroughly the Certificate Authority verifies the certificate requester’s identity.
For most websites, a free DV certificate from Let’s Encrypt is sufficient.
Quick comparison
| DV | OV | EV | |
|---|---|---|---|
| Validates | Domain ownership only | Domain + organization exists | Domain + thorough org audit |
| Issuance time | Minutes (automated) | 1-3 days | 1-2 weeks |
| Encryption | Same | Same | Same |
| Price | Free (Let’s Encrypt) | $50-200/year | $100-500/year |
| Browser display | Padlock | Padlock | Padlock (green bar removed in 2019) |
| Organization name in cert | No | Yes | Yes |
| Warranty | None | $10K-250K | $250K-1.75M |
| Wildcard available | Yes | Yes | No |
| Best for | 90%+ of websites | Enterprise compliance | Regulated industries |
Domain Validation (DV)
DV certificates verify only that you control the domain. The CA checks this automatically via:
- HTTP-01 challenge — place a file on your server
- DNS-01 challenge — add a TXT record to your DNS
- Email validation — respond to an email sent to admin@yourdomain.com
No paperwork, no phone calls, no waiting. Issuance takes minutes.
Who issues DV for free:
- Let’s Encrypt — via GetHTTPS, Certbot, acme.sh
- Buypass Go — 180-day validity
- Google Trust Services — via ACME
DV is sufficient for:
- Personal sites and blogs
- SaaS applications and APIs
- E-commerce (PCI DSS accepts DV)
- Startups and small businesses
- Internal tools
- Staging/development environments
Organization Validation (OV)
OV certificates verify domain ownership plus the organization’s legal identity. The CA checks:
- Domain control (same as DV)
- Organization exists in government registries
- Physical address verification
- Phone verification call
OV certificates include the organization’s legal name in the certificate metadata. However, modern browsers show no visual difference between DV and OV — users see the same padlock icon.
When you might need OV:
- Enterprise procurement that specifically requires OV
- Compliance frameworks that mandate organizational identity in certificates
- Internal company policy requiring OV
Extended Validation (EV)
EV certificates require the most thorough verification:
- Everything in OV
- Verify the organization’s operational existence (not just legal)
- Verify the physical address
- Verify the applicant’s authority to request the certificate
- Annual renewal of all verification steps
The green bar is gone. Chrome removed the EV green address bar in 2019 (version 77). Firefox followed. There is now no visual distinction between DV, OV, and EV in any major browser. Users cannot tell the difference.
When you might need EV:
- Specific regulatory requirement (verify the actual regulation — many people assume EV is required when it isn’t)
- Some financial institutions require it for compliance
- Rarely justified on technical or security grounds
Decision tree
Do you have a specific compliance requirement mandating OV or EV?
├── Yes → Get OV or EV from a commercial CA
└── No → Is there a procurement policy requiring org identity in the cert?
├── Yes → Get OV
└── No → DV is sufficient → Get a free one from Let's Encrypt94.3% of all SSL certificates are DV. The market has spoken.
Common misconceptions
“EV is more secure than DV.” Wrong. All three types use identical encryption. A DV certificate from Let’s Encrypt provides the same TLS protection as a $500 EV certificate from DigiCert. The encryption doesn’t know or care about the validation level.
“E-commerce sites need EV.” PCI DSS (the payment card industry standard) requires encryption, not a specific validation level. DV certificates meet PCI requirements. Your payment processor (Stripe, PayPal) handles the most sensitive parts anyway.
“Users trust EV sites more.” Since browsers no longer show any visual difference (no green bar since 2019), users can’t distinguish EV from DV. Studies showed most users never noticed the green bar even when it existed.
Frequently asked questions
Does Google rank EV sites higher than DV?
No. Google has confirmed that the type of SSL certificate does not affect search rankings. Any valid HTTPS certificate provides the same SEO signal.
Can I upgrade from DV to OV later?
Yes. Buy an OV certificate from a commercial CA and replace the files on your server. No migration or downtime needed.
Why do commercial CAs push EV?
Revenue. EV certificates cost $100-500/year vs $0 for DV from Let’s Encrypt. CA marketing emphasizes trust and warranty, but the encryption is identical and the green bar is gone.
What about the warranty on paid certificates?
Certificate warranties cover damages if the CA issues a certificate to the wrong party (mis-issuance). They do NOT cover you if your site gets hacked. In practice, warranty claims are extremely rare and have narrow conditions. No significant warranty payout has ever been publicly documented.