Make important messages impossible to miss – add clean, customizable alert and notice boxes to any post or page, right from the Gutenberg editor.

Why Alert Box Block?

Warnings, tips, updates, and announcements deserve more than plain paragraphs. Alert Box Block lets you create and display notices and alerts on any page using a native Gutenberg block, so key information stands out exactly where readers need it.

The block ships with multiple alert types you can switch between in a click, plus ready-to-use presets that look great without any modification. When you want full control, a rich set of customization options in the block sidebar lets you design the alert box exactly the way you want – improving the user experience of your website with zero code.

Free Features

Fully Customizable: Lots of options available to make the alert box look exactly the way you want.
Different Alert Types: Switch between multiple alert box types with a single click.
Standard Presets: Ready-made alert/notice styles you can use without any modification.
Native Gutenberg Block: Works right inside the block editor – no shortcodes or page builders required.

How to Use – Quick Start

Install and activate the Alert Box Block plugin.
In the Gutenberg editor, add the Alert Box Block from the “Widgets” block category.
Adjust the alert type, presets, and styling from the right-side settings sidebar.
Publish – your notice is live. Enjoy!

For installation help, see the Installation tab.

Use Cases

Site Announcements: Highlight maintenance windows, launches, or policy updates.
Content Warnings & Tips: Add info, success, warning, or error style notices inside tutorials and docs.
Promotions: Draw attention to discounts, deadlines, and limited-time offers.

Did you like this plugin? Do you have a feature request? Please share your feedback with us.

Check out the Parent Plugin of this plugin-

B Blocks – A blocks collection and page building tool for Gutenberg.

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Alert Box Block – Grab Attention with Eye-Catching Notices