SSL Certificates

SSL Certificate is a digital certificate that authenticates a website's identity and encrypts data transmitted between a web server and a user's browser. It uses TLS encryption to secure communication over the internet.

When a website has an SSL certificate installed, the connection changes from HTTP to HTTPS and a padlock icon appears in the browser address bar. SSL is commonly used to protect sensitive data such as login credentials and online transactions.

Read more: What Is an SSL Certificate? How It Works, Benefits & Types

Both free SSL (like Let's Encrypt) and paid SSL certificates provide the same industry-standard TLS encryption to secure data transmission. The primary differences lie in the validation levels, browser trust indicators, warranty coverage, and technical support.

The table below highlights the key differences to help you decide:

Summary: Free SSL is a basic solution for encrypting personal or non-commercial sites. However, paid SSL is a necessary investment for businesses to maximize customer trust, display verified legal identity, and benefit from strong warranty protection.

All three types of SSL certificates—DV, OV, and EV—provide the same industry-standard TLS encryption (typically 256-bit). The key difference lies in the SSL certificate validation levels and the trust indicators they convey to your website visitors.

Here is a detailed comparison to help you choose the right one:

Summary: Choose DV for quick, cost-effective encryption. Upgrade to OV or EV if you are a registered business aiming to maximize customer trust and protect your brand identity.

Choosing the right SSL certificate depends on the type of website you run, the level of identity verification required, and the trust indicators you want to present to visitors. While all SSL certificates provide industry-standard TLS encryption, different types are designed for specific use cases.

The following table can help you choose the most suitable validation level:

Beyond validation levels, consider the number of domains you need to secure:

• To secure a single domain (e.g., domain.com) → Choose Single Domain SSL.
• To secure one primary domain and unlimited subdomains (e.g., shop.domain.com, crm.domain.com) → Choose Wildcard SSL.
• To secure multiple entirely different domains on a single certificate (e.g., domain1.com, domain2.net) → Choose Multi-Domain (SAN) SSL.

Summary: Combine your required trust level (DV, OV, EV) with your domain coverage needs (Single, Wildcard, SAN) to choose the most cost-effective and optimal SSL certificate for your project.

Yes, absolutely. Since 2014, Google has officially confirmed that HTTPS is a ranking signal, meaning secure websites may receive a small ranking advantage in search results.

Here are the top 3 reasons why an SSL certificate is crucial for your SEO strategy:

• Direct Ranking Boost: If two websites are identical in content quality and backlinks, search engines will give a ranking advantage to the site with an active SSL certificate (HTTPS) over the non-secure one (HTTP).
• Lower Bounce Rate (Avoiding "Not Secure" Warnings): Modern browsers like Google Chrome and Safari actively flag HTTP websites with a prominent "Not Secure" warning. This warning can discourage visitors from staying on the site, drastically increasing your bounce rate. A high bounce rate often indicates poor user experience, which can indirectly harm your SEO performance.
• Faster Page Load Speeds (HTTP/2 Enabled): Modern browsers typically enable HTTP/2 or HTTP/3 only for HTTPS websites, allowing faster and more efficient page loading. Combined with high-performance engines like LiteSpeed Web Server, your secure site will load significantly faster, helping you pass Google’s Core Web Vitals assessment.

Summary: Today, an SSL certificate is no longer just a security feature; it is an essential investment for any successful SEO campaign and for maximizing visitor trust.

Yes—but in a highly positive way. In the past, HTTPS encryption could introduce a slight delay during the initial secure connection (the handshake). However, thanks to modern web technologies, websites using SSL certificates now perform significantly faster and more reliably than outdated HTTP websites.

Here are the key factors that make modern SSL a speed booster rather than a bottleneck:

• Unlocking HTTP/2 and HTTP/3: Modern browsers typically enable HTTP/2 and HTTP/3 only for HTTPS websites. These advanced protocols allow multiple files to load simultaneously over a single connection, drastically reducing overall page load times.
• Optimized TLS Handshakes: With the latest encryption standards like TLS 1.3, the time it takes to establish a secure connection is significantly reduced. Features like TLS session resumption (0-RTT) mean returning visitors experience almost instantaneous load times.
• High-Performance Web Servers: When paired with highly optimized web servers like LiteSpeed or Nginx, the encryption/decryption overhead is handled with incredible efficiency, resulting in an outstanding Time to First Byte (TTFB).

Summary: The idea that SSL slows down a website is a myth of the past. Today, HTTPS is the essential key to unlocking the fastest modern web protocols, directly enhancing both user experience and technical SEO performance.

Yes. VietHosting provides assistance with installing and configuring SSL certificates for websites hosted on our Shared Hosting, VPS, and Dedicated Servers.

Our technical support typically includes:

• SSL certificate installation: Deployment on common web server environments such as cPanel, DirectAdmin, Nginx, Apache, or LiteSpeed.
• HTTPS configuration: Setting up automatic redirects from HTTP to HTTPS to ensure all website traffic is strictly encrypted.
• SSL troubleshooting: Assistance with resolving common issues such as incorrect certificate chains, mixed content warnings, or misconfigured HTTPS settings.
• Renewal and maintenance: Guidance or direct support for renewing SSL certificates to keep your website continuously secured.

Note: In many modern hosting environments provided by VietHosting, SSL certificates can be installed and renewed automatically using tools such as AutoSSL or Let’s Encrypt.

Summary: If you encounter any difficulties installing or configuring SSL, VietHosting’s technical team is always ready to assist and ensure your website runs securely over HTTPS.

Yes. VietHosting offers refunds for paid SSL certificate services under certain conditions.

• Refund period: Customers may request a cancellation and refund within 30 days from the date the SSL certificate is successfully activated.
• Eligible services: This policy applies only to paid SSL certificates. Free SSL certificates issued automatically (AutoSSL) are not eligible for refunds.
• How to request a refund: Please submit a request through our client support ticket system for processing.

For complete terms and exclusions, please refer to our Refund Policy.