by SSL Zen - Free SSL/HTTPS 4.9 (664 reviews)

SSL Zen — SSL Certificate Installer & HTTPS Redirects

Name: SSL Zen — SSL Certificate Installer & HTTPS Redirects
Rating: 4.9 (664 reviews)
Author: SSL Zen - Free SSL/HTTPS

Free SSL certificate for WordPress — install a Let's Encrypt SSL, force HTTPS, fix mixed content and redirect HTTP to HTTPS. No coding needed.

SSL Zen ranks #2,183 among WordPress.org plugins with 10,000+ active installations, is #154 of 4,514 in the Security category, a 4.9/5 rating from 664 reviews, and was last updated Jul 11, 2026. Data from WordPress.org, refreshed twice daily — see methodology.

Tested up to WP 7 (Current: 7.1)

v4.7.42 Current Version v4.7.42

Updated 2 months ago Last Update on 11 Jul, 2026

Refreshed 8 hours ago Last Refreshed on

#154 of 4,514 in Security Top 5% by installs Downloads +5.3% this week

View on WordPress.org

Rank

#2,183

— No change

Active Installs

10K+

-6.8%

KW Avg Position

— No change

Downloads

1.1M

+22 today

Support Resolved

— No change

Rating

98%

Review 4.9 out of 5

4.9 (664 reviews)

Next Milestone 20K

Total Progress 4.9%

10K+ 20K+

762

Ranks to Climb

Growth Needed

8,000,000

Active Installs

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Need 9,514 more installs to reach 20K+

Rank Changes

Current #2,183

Change

Best #

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Active Installs Growth

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Active Installs 0,000,000+

Growth +0.0%

Peak 0,000,000

Downloads Growth

Downloads

Growth

Peak

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Reviews & Ratings

4.9

664 reviews

Overall 98%

638 (96%)

8 (1%)

5 (1%)

4 (1%)

9 (1%)

Security History

Source: WPVulnerability

7 known vulnerabilities on record · 2 in the last 24 months · checked 1 week ago

Aug 18, 2026 UNPATCHED

SSL Zen — SSL Certificate Installer & HTTPS Redirects [ssl-zen] <= 4.7.43 (unfixed)

CVE-2026-28569 · No fix released
Oct 16, 2024

SSL Zen — SSL Certificate Installer & HTTPS Redirects [ssl-zen] < 4.0.5

CVE-2022-4974 · Fixed in v4.0.5
Apr 17, 2024

SSL Zen — SSL Certificate Installer & HTTPS Redirects [ssl-zen] < 4.6.0

CVE-2024-1076 · Fixed in v4.6.0
Jul 18, 2023

SSL Zen — SSL Certificate Installer & HTTPS Redirects [ssl-zen] < 4.5.3

CVE-2023-33999 · Fixed in v4.5.3
Mar 4, 2022

SSL Zen — SSL Certificate Installer & HTTPS Redirects [ssl-zen] < 4.0.5

CVE-2022-4974 · Fixed in v4.0.5
Feb 28, 2022

SSL Zen — SSL Certificate Installer & HTTPS Redirects [ssl-zen] < 4.0.5

Fixed in v4.0.5
Feb 28, 2022

SSL Zen — SSL Certificate Installer & HTTPS Redirects [ssl-zen] < 4.0.5

Fixed in v4.0.5

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Plugin Details

Version: 4.7.42
Last Updated: Jul 11, 2026
Requires WP: 4.2+
Tested Up To: 7
PHP Version: 5.6 or higher
Author: SSL Zen - Free SSL/HTTPS

Support & Rating

Rating: ★ ★ ★ ★ ★ 4.9
Reviews: 664
Support Threads: 0
Resolved: 0%

Keywords

force ssl free ssl mixed content ssl ssl certificate

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TL;DR

AI summary of the plugin's readme

This plugin is for WordPress site owners who want to secure their site with an SSL certificate. It helps generate, install, and renew a free Let's Encrypt SSL certificate and redirect HTTP traffic to HTTPS without manual server configuration.

Generate free SSL certificate
Domain ownership verification
Install SSL certificate via tutorials
Renew SSL certificate every 90 days
SSL certificate validity settings page
Email reminder before expiry
Secure padlock in browser
Force HTTPS redirects

Frequently Asked Questions

Common questions about SSL Zen — SSL Certificate Installer & HTTPS Redirects

Install the free SSL Zen plugin, enter your domain and email, verify domain ownership with a one-time DNS record or file upload, then install and activate the free Let's Encrypt® SSL certificate — no coding required. Your WordPress site will be served over HTTPS with a valid padlock in minutes, and SSL Zen fixes mixed-content warnings and redirects HTTP to HTTPS for you.

SSL Zen installs a free SSL certificate, forces HTTPS on every page, and automatically rewrites insecure HTTP resources to HTTPS so the "Not Secure" warning and mixed-content errors disappear. No manual code edits needed.

An SSL (Secure Sockets Layer) certificate is a digital certificate that authenticates the identity of a website and encrypts information sent to the server using SSL technology.

Yes. All SSL certificates are generated by Let’s Encrypt® (nonprofit) with a mission to create a more secure and privacy-respecting Web by promoting the widespread adoption of HTTPS.

An SSL Certificate protects your customers’ sensitive information such as their name, address, password, or credit card number by encrypting the data during transmission from their computer to your web server.

If you are using the free version of the plugin, you will be able to download the SSL certificate. Follow the on-screen instructions to install the SSL certificate on your web server or hosting panel.

Let's Encrypt® SSL certificates are valid for 90 days and can be renewed at no additional cost. You can easily renew your SSL certificate through our plugin.

Simply follow the same process you used to generate and install the SSL certificate the first time and your SSL certificate will be renewed.

We've made the process of generating and installing the SSL certificate extremely easy. All you have to do is follow our simple step-by-step guide.

Our plugin is open-source and anyone can download and inspect it before installing it on their website.