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Great is the art of beginning, but greater is the art of ending
Henry Wadsworth Longfellow

I announce that I cease all development and activity in the programming universe indefinitely. My career has reached the turning point I was not expecting for at least another year, leaving me highly off guard and without laid-out plans for this hobby's continuity. I have begun a 5-year residency program in Neurosurgery which is clearly not compatible, time-wise, with programming.

I gave in all my passion for developing, and you gave me back your loyalty and trust, even when I did not deserve that much. Now it is the time for payback. I release all my present and past work as Open Source software, in the hope some talented developer will continue maintaining and expanding my vision of a modern, sleek forum software. The intrinsic flexibility of MyBB is the true hidden gem of an otherwise outdated codebase; I do hope the project can continue and be updated complying to the latest coding standards.

I hereby thank Euan, kawaii, andrewjs18, Ben, Matt, Omar G., effone, Eric J., Devilshakerz, Wildcard, JordanMussi and all the other team members I have had the opportunity to work with when I was a MyBB team member. I thank Tomm M, my mentor, who inspired me to pick up coding with his piece-of-art plugins. And finally, I thank all of you MyBBoost subscribers who have helped me getting through my toughest university years economically.

Yours sincerely, Filippo

Hovercards 1.3

25 Feb 2017 Edited
Hovercards is a plugin which shows a delightful preview of your users when they hover on usernames around your board. You can customize Hovercards as you wish, fine-tuning what users data to show inside cards and their visual aspect as well.

[Image: S6lj3yD.gif]

Minimum requirements

PHP 5.4
MyBB 1.8.0
664 chmod permissions on inc/functions.php

Main features

Hovercards is not a complicated plugin. As such, it does not come with many hardcoded options, but it does what it's supposed to do: display cards on hover.


You decide what data to include in a card: once a data point becomes available, you can reference it in Hovercards' unique template, which is then packed and built upon every single hover on an username. Hovercards adds 1 stylesheet you can play around with to customize the visual aspect of the card. A minimal style is included by default.

You can also use JavaScript conditionals to adapt each data point's display. For example, you might want to display a different label when an user hasn't posted yet. You can use the buildTemplateCallback(html, user) function to manipulate the template accounting for each user's values every time it is displayed. The base example is included in the hovercards_script template.

Adaptive colors

Every card can hold an unique background color which is chosen upon the dominant one from the user's avatar. Text color is adjusted to be readable accounting for the background contrast. This is available as an option. Adaptive colors uses a nasty technique which absolutely demands the image data; cross-site scripting blocks is circumvented by using Google's public image proxy, which helps gathering the image data.

All-in-one query

Hovercards queries the database just the first time you hover on a username, gathering all the users available in the page with one query. This adds an extra layer of trust when it comes to properly assign an user's data to the respective target on screen, and it also saves resources by avoiding too many queries over time.


Upload the files maintaining the same folder structure as they come in the package and click the button Install & activate within your board's plugin list.


Hovercards adds 4 settings.

Adaptive colors has already been explained above. If you disable it, you can manually choose and add a default background color for all cards in HEX format.

Fields to use lets you select the available data points. The more data points you will select, the more intense and slow the query will be (although you shouldn't notice the difference most of the times). A FIELD is then available within Hovercards' template with the following, simple syntax: {FIELD}. For example, if you activate the field "username", you will be able to use {username} into Hovercards' template and it will be replaced with the user's formatted username when watching his card.

Card positioning lets you decide the orientation of cards relative to their attached object out of 9 possible vertical/horizontal placements. The default orientation is "bottom left".

Templates and stylesheets

Hovercards adds a CSS file named hovercards.css to every theme of your board. You can customize the card's appearance by editing the stylesheet's CSS rules. It also adds 2 templates which you can customize to change both the appearance and data points to show in a single card, as explained above.

Reporting issues

If you encounter an issue, feel free to open a new thread in this forum with detailed instructions on how to reproduce your issue. Suggestions and feature requests are appreciated as well.


Hovercards is available for free. WARNING SIGN Support is discontinued due to my departure from programming. Read more why here.

This project is licensed under


A simple license with little to no use restrictions, except for author's crediting. Read the provided LICENSE file for more informations.


Commercial use
Private use


License notice
Copyright notice
Filename Size Downloads
39.83 KB 348
, , And 13 others like this post
Hugo 11 Jan 2020
Thanks! Works like a charm! The support here is amazing, thanks!
Shade 2 Apr 2020 Edited


This is a feature release.

SQUARED NEW cards can be now customized with JavaScript conditionals and code
SQUARED NEW ColorThief update from version 2.0 to 2.3
SQUARED NEW extended usage to any HTML element carrying the data-uid attribute. Hovercards edits the core and applies the data-uid attribute to a low-level and widely used function in MyBB, but you can now edit your templates and add the data-uid attribute to any element you want (images, divs, etc.). Make sure the attribute points to an actual uid!

Upgrading to version 1.2

KEYCAP 1 uninstall the old version. This will delete all customizations made in Hovercards templates and stylesheet, so make a backup before uninstalling!
KEYCAP 2 overwrite the old files with the new ones
KEYCAP 3 reinstall the plugin, and eventually reapply your custom edits
Shade 15 May 2020 Edited


This is a security release.

LOCK fixed a medium risk security vulnerability, kept unnoticed for years. Reported by @kbilly. To ensure a responsible disclosure, details will be given only via PM. All eligible users are highly advised to update the plugin as soon as possible.

Upgrading to version 1.3

KEYCAP 1 overwrite the old files with the new ones. No further action is required.
honger 31 Jul 2020
So in case anybody would like to make it work with DVZ Mentions (and I haven't seen any tutorial here how to do that), here's the fix: open
and change line 86 to:
'class="mycode_mention"', 'data-uid="' . $user['uid'] . '"',
Shade 31 Jul 2020
Thanks for your contribution.
Hellstorm 15 Aug 2020
Could I get a template from somewhere? Im trying to set it up but it looks so bad when I do it :(
Shade 15 Aug 2020
Theming is up to you unfortunately. But the standard one should be pretty slick. What’s the issue?