How To Fix Mixed Content Error In WordPress! (Solved)
Last Updated on 13th January 2022 by Ajmer Singh
This article contains a detailed guide on how to fix mixed content error in WordPress.
Have you ever run across a mixed content issue on your site? Oftentimes, it is a result of migrating from HTTP to HTTPS.
During the process of migration, some files were carried over.
Hence, the end product is a mixed content error.
Wondering what the mixed content error is? I will explain in the next paragraph.
what does the mixed content error mean?
Mixed content error is said to happen if your website loads over a secured HTTPS connection, but other content such as the image, scripts, are loaded over an insecure HTTP connection.
If a site displays a mixed content error, it simply means that some of the content on that site is not secured and is susceptible to malware attacks.
However, there are two types of mixed content, and I will be explaining them below;
Types of mixed content error
we have two types of mixed content error namely:
- Passive mixed content error
- Active mixed content error
Passive mixed content error
Mixed content error is said to be passive when the HTTP content of the site is restricted and cannot react with the rest of the page. (Images and videos)
For instance, an attacker can have access to only the videos or image content on the site but is restricted and can’t have access to alter any change to the rest of the page.
Oftentimes, the passive mixed content error is not considered a threat to a site, but in actual fact, it is.
An attacker can decide to replace the image or video content on your site with nudes and indecent content, or with ads that redirect users to a different site.
This defaces your site to users, hence the need to act fast.
2. Active mixed content error
A mixed content error is said to be active when the unencrypted HTTP content is not restricted, It can interact with and alter the entire page.
The active mixed content poses more threat to a site’s page than the passive mixed content.
Once compromised, an attacker has access to the entire webpage and can alter or make changes on the entire page.
The attacker has access to sensitive information about your users and this might include their login details, their bank information, etc.
He can decide to redirect users to an attacker’s site and can also make use of the sensitive information of users against them.
Most browser often indicates that a site isn’t secured and it contains mixed content, However, some browsers block the active mixed content.
However, each rule varies with different browsers.
Read our article on how to move from HTTP to HTTPS in WordPress
Causes of mixed content error
The mixed content error appears often times after the migration of a WordPress site from HTTP to HTTPS.
Some of the content refuses to be loaded over the HTTPS, hence mixed content warning occurs.
Below are some of the causes of mixed content warnings;
- Images that have hardcoded URLs (Images that run over HTTP)
- Links attached to the HTTP version of external scripts
- Embedded video script that is loaded on HTTP instead of HTTPS
Where to check mixed contents?
To know if your site contains the mixed content error
- Simply right-click or Ctrl+SHIFT+I on your web page
- Choose the ‘inspect‘ option from the series of options displayed
- A page will pop open on the right side of the page.
- Click on the console tab. If your site has any mixed content error, it will be displayed here.
How to fix mixed content error in WordPress
The first approach to getting the mixed content error fixed in WordPress is to install and activate the SSL Insecure Content Fixer plugin.
Upon activation, navigate to the settings page of the SSL insecure content fixer plugin to get it configured.
The plugin provides five levels of fixing the mixed content error, I will give an explanation to each one of them.
- Capture all.
This is the most recommended and fastest method of fixing mixed content errors in WordPress for beginners.
It fixes mixed content errors for scripts, style sheets, and WordPress media automatically.
If after trying out the simple method, the mixed content error on your site isn’t fixed, try out this method.
It uses all the features found in the simple method, but it also has an additional feature of fixing WordPress content and text widgets.
These contain all the features in the content method.
It has an additional feature of fixing resources loaded in the WordPress widgets of your site
The capture method, however, captures every page on your website including the header and footer of your page.
It also replaces all URLs with HTTPS.
The disadvantage of this method is that it is quite slow and it affects the performance of your site.
After you have tried out all the methods listed above, and you still don’t get your expected result, try this method.
The capture-all method fixes everything on your site.
However, the downside of this method is that it has a negative impact on the performance of your site.
After you have successfully activated and configured the SSL insecure content fixer plugin, it’s time to verify that the issue is solved.
How to verify that the mixed content issue is solved
In this paragraph, I will be illustrating how you can verify that the mixed content error issue on your site has been solved.
To verify, simply use the whynopadlock online tool to check. This tool consequently checks your website and informs you about the success of the process.
All you need to do is simply visit the whynopadlock website on your browser. Enter the URL of your site.
Click on the test page option displayed.
You will receive a response similar to the image below if the mixed content issue has been resolved on your site.
Another method of verifying that the mixed content error issue has been fixed is by clicking around a few pages and checking the browser status indicator in the search bar.
A secured padlock indicates that the error has been fixed
If after clicking a few pages, the mixed content error isn’t fixed, you will have to revisit the plugin and restart the configuration process.
FAQS about Mixed Content Errors!
Q: What is a mixed content error?
A: A mixed content error occurs when there are HTTPS referenced resources, but the page itself is being served over HTTP.
Q: When would I see a mixed content error?
A: You would see this error when you are connected to the Internet through a secure HTTPS connection, but trying to view a webpage over an HTTP connection.
Q: How do I prevent mixed content errors?
A: The best way to prevent mixed content in your website is to have an SSL certificate installed on your web server,
which ensures that all visitors to your site are in fact seeing your site; it also encrypts all traffic between user and server.
Q: How can I fix mixed content errors?
A: Here are the steps to take to resolve a mixed content error:
1. Download the latest version of your CMS.
2. Install the latest versions of all modules, including any third-party modules.
3. Reinstall any plugins or themes that are not part of your CMS package to ensure they are up-to-date and compatible with the latest versions of their respective applications.
4. Once installation is complete, upload the website back to your web server.
5. Test for mixed content errors using https://www.whynopadlock.com
Q: Are there other ways to handle mixed content?
A: You can set up HTTPS on an alternate port or subdomain so that you are not serving over HTTP at all.
This solution requires SSL certificates and may require a separate IP address.
Q: Why does HTTPS matter? Do I need it if my website doesn’t ask for sensitive information?
A: You do not necessarily “need” HTTPS, but it is an important step in keeping your users safe when they are browsing content on your site.
Not all mixed content compromises the security of your website, but why risk it?
Q: How can I check if a website uses HTTPS?
A: You can use this tool “WhyNoPadlock” to determine if a domain name or web address is secure and you can also verify that an SSL certificate has been installed on the webserver.
Q: My site does not show up in search engines when browsing via HTTPS, why is that?
A: This is most likely because your site was not indexed for the HTTPS version of your website. You can begin indexing with Google Webmaster Tools.
Q: I have a secure SSL certificate installed on my webserver and my page still shows a mixed content error. What should I do?
A: You can check your website with WhyNoPadlock to determine if you have a mixed content issue.
If the checklist results in one or more errors, then you will need to resolve them before your site is secure.
A migration from HTTP to HTTPS needs to be handled carefully, and it is recommended that developers of websites use a professional migration service.
Q: What is SSL?
A: SSL stands for Secure Sockets Layer, which is the most common security technology that’s used to establish an encrypted link between a web server and a browser.
This link ensures that all data transmitted between the web server and browsers remain private and integral.
Websites using HTTPS encrypts all HTTP content before sending it to the browser.
The connection between the website and the browser is secure, protecting both parties from potential man-in-the-middle attacks.
Q: What is HTTPS?
A: HTTPS stands for Hypertext Transfer Protocol Secure, which is the secure version of HTTP.
However, your site does not need to run on HTTPS to have an SSL certificate installed on your web server.
The two are completely separate concepts. The important thing about HTTPS is that it ensures that all visitors browsing your website will be doing so securely.
Q: I have set up HTTPS on my website, now what?
A: Congratulations! Now you can begin to index your site with Google Webmaster Tools.
When you first set up HTTPS on your site, Google will automatically switch to indexing the HTTPS version of your website.
However, this can take some time.
Q: What is HTTP?
A: HTTP is Hypertext Transfer Protocol and specifies the communication protocol for data transfer on the World Wide Web.
All major browsers support this protocol, which ensures that all users can browse websites using HTTP.
Q: Why do I need HTTPS?
A: Websites running over HTTP are susceptible to attacks in which an attacker can alter the website for their own purposes.
A man-in-the-middle attack is when a malicious user intercepts all data between two devices, allowing them to access any information being sent between your device and the remote resource.
This attack is virtually impossible to detect.
With HTTPS, your web server and browser encrypt all data transmitted between each other for a secure session without the risk of being intercepted by a third party.
Q: How do I get an SSL certificate?
A: You can get a free SSL certificate from your hosting provider like Cloudways or use a free SSL certificate offered by Let’s Encrypt.
Once you have purchased it, the installation process is rather simple and can be done within just a few minutes.
Q: Why do I need HTTPS even if my site does not contain any sensitive information?
A: Even if your website does not save user data, HTTPS is vital for the future of your website.
In April 2015, Google announced that HTTPS will be a ranking signal in their search algorithm.
Q: Do all connections between my browser and web server need to be encrypted?
A: No, this is not a requirement.
Only the connection between the browser and web server needs to be encrypted in order for a website to qualify as being HTTPS.
Any connections made from your webserver to a third party is out of your control and does not affect whether or not you have configured your site correctly with HTTPS.
Q: What is an example of an HTTPS connection?
A: When you type in http://www.google.com into your browser, the data is sent over HTTP which then connects to Google’s server with HTTPS.
This ensures that any information being sent between you and another party remains private.
Q: Do I need to encrypt my entire website?
A: If you are using HTTPS to secure your personal information, then yes it is important to encrypt every page on your website.
However, if you are using HTTPS for any other purposes such as creating an SSL certificate for testing purposes or just want to have a more secure connection with your web server, then this is not necessary.
You can use a free WordPress plugin such as Really Simple SSL to enable HTTPS on every page of your website.
Q: I have installed HTTPS on my site, how can I tell if everything has been configured correctly?
A: You can check the security configuration of your site by entering our SSL Checker Tool.
It will scan your web server and identify any issues with your HTTPS configuration.
Q: What if I do not have an SSL certificate?
A: This is okay as long as you know the risks and are okay with sending all data over HTTP.
When first setting up your site, it’s important to first determine why you want to use HTTPS before going through the installation process.
Q: Can I convert my HTTP website into an HTTPS website?
A: Yes, you can use a free WordPress plugin such as Really Simple SSL to quickly and easily convert all pages of your website to HTTPS.
This only works if you do not have a lot of custom code on your site or any resources hosted externally.
You can also purchase a new SSL certificate to enable HTTPS on your website.
Q: Is there a difference between HTTP and HTTPS?
A: Yes, the “s” stands for secure.
When visiting an HTTP site, any data transmitted between you and the webserver is sent in plain text which means it can easily be read by an attacker.
With HTTPS fully encrypting all data between you and the webserver, it is much more difficult for an attacker to intercept any of your information.
Q: What are the requirements for using HTTPS?
A: You need two things in order to use HTTPS – a digital certificate and a secure web server.
The certificate is used to encrypt all communication between your device and remote servers.
A secure web server ensures that the data transmitted between your device and web server remains private.
Q: Is HTTPS more secure than HTTP?
A: Yes, it is much more difficult for an attacker to intercept any information when using HTTPS because all data sent between you and a remote server is fully encrypted.
Without the use of encryption, it is possible for an attacker to access any information being transmitted.
Q: What is the benefit of using HTTPS?
A: When visiting an HTTP website, any data sent between your device and the webserver is not encrypted which means it can easily be read by an attacker.
With HTTPS fully encrypting all data between you and the webserver, it is much more difficult for an attacker to intercept any of your information.
Q: I don’t need a SSL certificate… what should I do?
A: If you do not need an SSL certificate, then you can just disable HTTPS on your site.
This is only recommended if you have a very simple WordPress site with no plugins or customizations as it may cause errors to appear.
Q: I want to be 100% secure… what should I do?
A: To ensure you are 100% secure, it is recommended that you purchase an SSL certificate to enable HTTPS on your site.
Q: What if I have more questions?
A: If you have any other questions about HTTPS or the security configuration of your site, then comment below.
Webmasters and site owners need to be aware of mixed content errors, as they can cause a number of problems with your website.
If you’ve noticed that some parts of your sites are not loading properly or you have security warnings about certain scripts on the page, then it is possible that there may be an issue with mixed content.
We hope we were able to answer any questions and provide helpful information in regards to fixing your mixed content error issue.
You might also want to read what is an SSL certificate and how does it work
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Ajmer Singh is the Founder & Author of Findmytricks. He is a Passionate Blogger, Content writer & WordPress developer. He loves sharing content related to WordPress and Blogging. He enjoys playing games in his free time.
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