ZeroSSL (Free DV / paid plans) review 2027

What problem does ZeroSSL solve for small agencies?

ZeroSSL is the pick when you want free certificates but also want to see them all in one place and be told before they expire. That is the gap it fills: free certificates with a real management dashboard and expiry alerts, so you are not hunting through control panels to find out which site is about to break.

It is ACME-compatible, so existing Certbot setups can point at it, and it offers simple browser-based issuance for people without shell access. Paid plans issue one-year certificates, which means fewer renewals to manage. It suits small agencies managing a handful of sites, and it scored 8.1 overall, ranking third of six tested in this category.

How did we score ZeroSSL across five criteria?

Issuance & validation: 22 out of 25. We measured time from payment to an installed, trusted certificate on our test domain, and how painful domain or organisation validation was. ZeroSSL issued in 3 minutes in our test.

Coverage: 17 out of 20. This covers subdomains, wildcards, multi-domain SAN slots, and the browser and device trust store the issuing root reaches. Wildcards are available, but only on paid plans.

Warranty & assurance: 8 out of 15. The stated warranty, the validation level offered (DV, OV, EV) and the site seal all count here. ZeroSSL is DV only, with no warranty on the free tier.

Support & tooling: 13 out of 15. Installation help, CSR tools, auto-renewal, API, and how quickly support answered a real installation question. The dashboard and ACME endpoint carried this score.

Value: 21 out of 25. Annual cost against what a free Let's Encrypt certificate already gives you. Free certificates are the core of the value case, but the free tier is capped at three certificates.

What does ZeroSSL do better than the alternatives?

The dashboard is the differentiator. Free certificates with a real management dashboard and expiry alerts mean you get told before a certificate lapses, rather than discovering it from a browser warning. It is ACME-compatible, so existing Certbot setups can point at it without rebuilding automation.

Paid plans issue one-year certificates, which cuts the number of renewals you manage. And issuance is simple in a browser for anyone without shell access. In our test, a certificate was issued in 3 minutes.

What are the parts and terms behind ZeroSSL?

• Cheapest certificate: 0 USD/yr
• Validation levels: DV
• Wildcard: Yes (paid plans)
• Wildcard price: 600 USD/yr
• Warranty: None on free tier
• Issued in (our test): 3 minutes
• Free reissues: Yes
• Refund window: 30 days on paid plans

How does ZeroSSL compare with the other tested certificate providers?

Against SSLs.com (8.5, $3.88), ZeroSSL is ahead on price for the first three certificates and on dashboard tooling, but SSLs.com offers DV, OV and EV validation, a $50,000 warranty on PositiveSSL, and issued in 6 minutes in our test. ZeroSSL is DV only.

Against Let's Encrypt (8.3, Free), ZeroSSL matches the free price and adds a dashboard and expiry alerts. Let's Encrypt issued in under 1 minute in our test, includes wildcards at no cost, and has unlimited free reissues. ZeroSSL caps the free tier at three certificates and charges for wildcards.

Against DigiCert (7.9, $268), ZeroSSL is far cheaper and faster to issue, but DigiCert offers DV, OV and EV, a warranty up to $2,000,000, and a 30-day refund window. DigiCert issued in 4 hours on OV in our test.

Where does ZeroSSL fall short?

The free tier is capped at three certificates. Wildcards need the $50 Premium plan, and the wildcard price on the spec sheet is 600 USD/yr. It is DV only, with no organisation validation, so it cannot serve buyers who need OV or EV. There is no warranty on the free tier.

Is ZeroSSL good value?

Price summary: Free (paid from $10/mo). The value criterion scored 21 out of 25, measured as annual cost against what a free Let's Encrypt certificate already gives you. For the first three certificates the cost is zero, and the dashboard and expiry alerts are included. Beyond that, paid plans start at $10/mo, and the wildcard price is 600 USD/yr. SSLs.com starts at $3.88, Sectigo at $87, and DigiCert at $268, while Let's Encrypt and Google Trust Services are free.

Who should buy ZeroSSL?

Small agencies managing a handful of sites. If you want free certificates but also want to see them all in one place and be told before they expire, ZeroSSL fits. If you need wildcards on the free tier, organisation validation, or a warranty, look at the alternatives above.