Restrict access to your page, if visitor has an old browser version

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Why do users need to update their browsers?
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Answer the Sphinx’s question and your life will be spared! In this case, the Sphinx asks about your Browser Version! If it is correct, you will be granted permission to view the treasures hidden in the website! If not, you will be banished from it, until your answer is not right!

What is this plugin about?

You want to tell Internet Explorer users to change their browser when they access your web page? Or is your site is for Chrome only? Now you can choose what version of what browsers will trigger a warning popup on your web site.

Sphinx Browser Version Checker is the best solution for a modern website which is not compatible with some old browser versions.
The plugin has some handy features, including:

+We take care not to erroneously notify users by constantly tweaking and improving the detection code. Users are presented with an up-to-date list of browsers that are available for their system.
+You can customize the style of the message, the text and other options.
+Automatically detect users web browser version
+Full modern browser support – Google Chrome, Firefox, IE, Edge, Opera, Safari
+Support for adding shortcodes with information about the session of the user (browser name and version, Operating System)
+Two display modes: popup and top panel display
+Option to block your website if users browser is too old (only popup will be shown)
+Option to add links to the location of the newest browser version that the user has installed (and also, your website supports it)
+Responsive layout
+Ability to display notification only once per visitor (uses cookies)
+Customizable message: text, images, links
+Option to add links to the location of the newest browser version that the user has installed (and also, your website supports it)
+Ability to block mobile browsers from displaying your website
+Optimized for speed – no speed impact
+Lifetime updates and support.

Test this plugin now!

You can give the plugin a try, using it’s live demo, here

Other cool stuff about this plugin

New feature in 1.5 update: Ability to fully block web page, if version requirement not met by user browser and to display a custom HTML message instead – more info about the update here.
New feature in 1.5 update: Ability to define a maximum supported browser version, for all popular browsers
New feature in 1.5 update: Ability to block unrecognized browsers (including bots)
It display notification when the user’s browser does not support your website
Allows you to select the browser versions which are supported by your website
You can easily customize the notification message and display options
It supports the 6 largest and most popular browser on the market:

  • Firefox
  • Chrome
  • Safari
  • Opera
  • Internet Explorer
  • Edge

You can customize the warning message, choose if you want to display links to the download pages of your supported browsers, select what browsers and browser versions should trigger the popup and if the user can or can’t hide the popup.
You can choose that if you allow users to hide the popup, a cookie is set that expires after 24h. After 24h, the user will see the popup again with the option to hide it for another 24h. Or, you can configure the popup to show every time a user used an unsupported browser version you defined.


Right now, the plugin does not support the usage of caching plugins. This limitation is planned to be lifted in a future plugin update.

Learn more about this plugin

Extended License

Need support?

Please check our knowledge base, it may have the answer to your question or a solution for your issue. If not, just email me at and I will respond as soon as I can.

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Version 1.0 Release Date 2016-11-16

First version released!

Version 1.1 Release Date 2017-02-02

Fixed some detected issues

Version 1.2 Release Date 2017-02-03

Added multisite support

Version 1.3 Release Date 2017-02-22

Fixed plugin auto-updating process
Some minor fixes and enhancements

Version 1.4 Release Date 2017-06-21


Version 1.5 Release Date 2018-01-30

Added the ability to block webpage if version requirement not met and to display a custom HTML message
Ability to define a maximum supported browser version for all popular browsers
Added the ability to block unrecognized browsers (including bots)

Version 1.5.1 Release Date 2018-02-15


Version 1.5.2 Release Date 2018-10-31

Updated Angular module to the latest version

Version 1.5.3 Release Date 2019-01-13

Added Gutenberg block support

Version 1.5.4 Release Date 2019-04-19

Security update

Version 1.5.5 Release Date 2019-04-23

Added the ability to disable the plugin's functionality on a list of URLs

Version 1.5.6 Release Date 2019-11-15

WordPress 5.3 compatibility update

Version 1.5.7 Release Date 2020-05-11

New features added for content templates
Bugfix update

Version 1.5.8 Release Date 2020-11-09

Added the ability to enable the functionality of the plugin only on a list of predefined URLs

Version 1.5.9 Release Date 2021-01-16

PHP 8 compatibility update

Are you already a customer?

If you already bought this and you have tried it out, please contact me in the item’s comment section and give me feedback, so I can make it a better WordPress plugin!

WordPress 6.0 and PHP 8.1 Tested!

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Sphinx Browser Version Checker Plugin for WordPress - 1
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