What Is an SSL Certificate and Does Your Website Need One?

Quick Answer: An SSL certificate encrypts data between your visitor's browser and your server, enabling the https:// padlock. Every website needs SSL. Google has used HTTPS as a ranking signal since 2014, and Chrome shows a "Not Secure" warning on HTTP sites. Most hosting providers offer SSL free via Let's Encrypt — enabling it takes less than 15 minutes.

You may have noticed that some website addresses start with "http://" while others start with "https://" — with an S at the end. That S stands for "Secure," and it's there because of something called an SSL certificate.

If your website still shows http:// (without the S), you need to read this.

What Is an SSL Certificate?

An SSL certificate (Secure Sockets Layer) is a digital file that enables an encrypted, secure connection between a visitor's browser and your website server.

Here is what happens without SSL:

A visitor types their email address into your contact form
That data travels across the internet as plain text
Anyone on the same network — at a coffee shop, airport, or hotel — could intercept and read it

Here is what happens with SSL:

The same data is encrypted before it leaves the visitor's browser
It can only be decrypted by your web server
Even if intercepted, it looks like random gibberish

SSL is what makes the padlock icon appear in your browser address bar. It is what makes https:// instead of http://.

How to Tell If Your Website Has SSL

The quickest check:

Open your website in a browser
Look at the address bar
Does the URL start with https://? You have SSL.
Does it start with http:// (no S)? You do not have SSL.
Do you see a padlock icon? That confirms SSL is active and valid.

You might also see a warning that says "Not Secure" in the address bar — this is Chrome telling visitors your site lacks SSL.

For a full check including whether your SSL certificate is valid, correctly configured, and not about to expire, run a free audit with Unsnag.

Why Your Website Absolutely Needs SSL

1. Google Requires It for Good Rankings

Google has used HTTPS as a ranking signal since 2014. All else being equal, a site with SSL will outrank the same site without SSL.

In 2018, Google Chrome started showing a "Not Secure" warning for all HTTP sites. This warning appears in the address bar to every visitor. The impact on trust and conversions is significant.

2. Visitors Will Not Trust Your Site Without It

When potential customers see "Not Secure" next to your website URL, many will immediately leave — even if your site is completely legitimate. Modern internet users have been trained to look for the padlock.

For e-commerce sites, a missing padlock will directly kill sales. Even for informational sites, it affects credibility.

3. Contact Forms and Login Pages Require It

If you collect any information through your website — email addresses, phone numbers, passwords, payment details — that data must be encrypted in transit. Sending it over HTTP is a security risk and may violate data protection regulations (GDPR, CCPA).

4. It Protects Both You and Your Visitors

SSL protects against "man-in-the-middle" attacks, where a malicious actor intercepts communication between your site and its visitors. This is particularly common on public Wi-Fi networks.

SSL Certificate Types Explained

There are several types of SSL certificates. Most small businesses need the most basic type:

Domain Validation (DV) — Recommended for most small businesses

Verifies you own the domain
Issues in minutes
Free (via Let's Encrypt) or low cost
Provides the padlock and HTTPS
Sufficient for blogs, informational sites, and small business sites

Organization Validation (OV)

Verifies your organization identity in addition to domain ownership
Takes a few days to issue
Costs $50–200/year
Shows your company name in certificate details
Good for mid-size businesses with higher trust requirements

Extended Validation (EV)

Most rigorous verification process
Costs $100–500/year
Mainly used by banks and large e-commerce
Not necessary for most small businesses

Wildcard SSL

Covers your main domain AND all subdomains (blog.yoursite.com, shop.yoursite.com, etc.)
Useful if you have multiple subdomains
Costs $80–300/year (free wildcards available via Let's Encrypt with some hosts)

How to Get an SSL Certificate

Option 1: Free SSL Through Your Hosting Provider (Recommended)

Most modern hosting providers offer free SSL certificates via Let's Encrypt — a nonprofit certificate authority trusted by all major browsers.

How to check if your host offers free SSL:

Log in to your hosting control panel (cPanel, Plesk, or your host's custom panel)
Look for "SSL" or "Security" in the menu
Enable Let's Encrypt or "AutoSSL"

Hosts that include free SSL: SiteGround, Bluehost, HostGator, GoDaddy, DreamHost, WP Engine, Kinsta — and most others.

Option 2: Free SSL via Cloudflare

Cloudflare is a CDN and security service with a free tier that includes SSL:

Sign up for a free Cloudflare account
Add your website
Update your domain nameservers to point to Cloudflare
SSL activates automatically

This also gives you CDN performance benefits and basic DDoS protection.

Option 3: Purchase an SSL Certificate

If your hosting does not offer free SSL (rare these days), you can purchase one:

Cost: $10–100/year for a DV certificate
Your host support team can usually help with installation

SSL Common Issues to Watch For

Expired certificate: SSL certificates expire (usually annually). Set a calendar reminder to renew before expiry. Unsnag monitors SSL expiry and alerts you.

Mixed content: Your site is on HTTPS, but some resources (images, scripts, CSS) are still loaded via HTTP. Browsers will show security warnings. Fix by updating all internal links to use HTTPS.

SSL on the wrong domain: If your certificate only covers www.yourdomain.com but visitors access yourdomain.com (without www), the certificate will show a security error.

Certificate not trusted: Using a self-signed certificate will show a "Your connection is not private" error in browsers. Production sites must use certificates from trusted certificate authorities.

Does SSL Affect Website Speed?

The short answer: negligibly, and modern implementations can actually be faster.

Modern TLS 1.3 (the current standard) is faster than older HTTP in many scenarios. HTTP/2, which requires HTTPS, offers significant performance improvements including multiplexing and header compression.

Bottom line: Do not let speed concerns stop you from enabling SSL.

Related reading:

The Bottom Line

SSL is not optional in 2026. Every website needs it. The good news: it is free for most sites and takes less than 15 minutes to enable.

Run a free Unsnag audit to check your SSL certificate status, expiry date, configuration, and mixed content issues — and get exactly what to fix.

Frequently Asked Questions

Does every website need an SSL certificate? Yes. Google uses HTTPS as a ranking signal (confirmed since 2014), Chrome displays a "Not Secure" warning on HTTP sites, and any site that collects visitor data (contact forms, email signups, logins) is legally required to encrypt it in transit under GDPR, CCPA, and similar regulations. There is no legitimate reason to run a website without SSL in 2026.

How much does an SSL certificate cost? For most small business websites, SSL is completely free. Your hosting provider likely offers free SSL via Let's Encrypt — check your hosting control panel under Security or SSL settings. Cloudflare's free tier also includes SSL. Paid certificates start at around $10/year and are only needed for special configurations.

How do I get an SSL certificate? Log in to your hosting control panel and look for an SSL or Security section. Most hosts let you enable Let's Encrypt or AutoSSL with a single click. If your host does not offer free SSL, sign up for a free Cloudflare account and route your domain through it — SSL activates automatically.

What is the difference between HTTP and HTTPS? HTTP (HyperText Transfer Protocol) is unencrypted — data sent between your visitor's browser and your server is plain text that anyone on the network could read. HTTPS adds SSL/TLS encryption, making the connection private and secure. All modern websites should use HTTPS.

Why is my website showing "Not Secure" even though I have SSL? This is usually a mixed content issue — your page loads over HTTPS but pulls in some resources (images, scripts, or stylesheets) using HTTP URLs. Check your site's source for any http:// resource links and update them to https://. Tools like Unsnag and SSL Labs can identify mixed content problems.