Let's Encrypt review
A focused free service for automating publicly trusted TLS certificate workflows.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Let's Encrypt is a nonprofit certificate authority that issues free, publicly trusted TLS certificates for websites. It is designed for website operators, hosting providers, and developers who need HTTPS with automated certificate workflows. Certificate requests are handled through the ACME protocol by an ACME client or hosting provider, while the service supports issuance, renewal, revocation, and Certificate Transparency logging. Its API platform focus suits teams that want to automate domain-validated certificate operations rather than manage certificates from a conventional administrative console.
The main strength is the depth of its ACME workflow. Domain control can be validated through HTTP-01, DNS-01, or TLS-ALPN-01 challenges, giving deployments several ways to prove control of a domain. Automatic renewal support and automatic certificate configuration for website use help reduce recurring operational work. Certificate revocation is available through the ACME API, and separate production and staging endpoints support different workflow needs. These capabilities make Let's Encrypt a practical fit for repeatable public TLS issuance across websites and hosting environments.
The trade-off is its narrow scope. Let's Encrypt is an ACME service and certificate authority, not a full certificate-management suite with verified discovery, inventory, integrations, or private-CA management. Teams seeking centralized visibility across certificates, broader ecosystem connections, or private certificate authority workflows should choose a different product. For website operators, developers, and hosting providers that can work with an ACME client and need free public TLS certificates, its focused model aligns well with the job.
Let's Encrypt pros and cons
- Where it wins
- Free ACME issuance and automatic renewal support
- Supports HTTP-01, DNS-01, and TLS-ALPN-01 validation
- Provides production, staging, revocation, and transparency APIs
- Where it doesn't
- Requires an ACME client or hosting-provider integration
- Does not provide certificate inventory or discovery
- Does not manage private certificate authorities
Let's Encrypt fact sheet, pricing and score →
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