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Free Plugin by Danny van Kooten v3.4.11

Boxzilla

Create WordPress popup and slide-in boxes for forms, offers, notices, and calls to action

Boxzilla

The facts

Rating
4.8★ from 132
Active installs
20k+
Price
Free
Last updated
20 Aug 2026
Added
May 2016
Requires WP
4.6
Tested up to
WP 7.1
Requires PHP
7.4
Downloads
892,276

Our analysis

AI-assisted

Boxzilla is a WordPress plugin designed for creating targeted popups, slide-ins, and call-to-action boxes on your site. You can configure these boxes to appear based on various user interactions, such as scrolling, time spent on a page, or specific clicks. The content of each box can include text, images, forms, and shortcodes from other plugins.

This plugin is suitable for website owners looking to enhance user engagement through popups for newsletter sign-ups, product offers, or important notices. It provides flexibility in design and functionality, allowing you to control when and how your messages are displayed.

Best for: This plugin is best for WordPress site owners wanting to implement effective popups and calls to action.

What it does well

  • Creates targeted popups and slide-ins
  • Supports various triggers for displaying boxes
  • Allows flexible content including shortcodes
  • Customisable visual appearance
  • Lightweight with only 6 kB of JavaScript added

Where it falls short

  • Core plugin is free, but advanced features require paid add-ons

Verdict

Boxzilla offers a robust solution for adding popups to your site, with a range of triggers and customisation options. It is a useful tool for improving visitor engagement.

From the developer

Danny van Kooten's own description of Boxzilla, lightly tidied.

Boxzilla is a WordPress popup builder for adding targeted popups, slide-ins, and call-to-action boxes to your site. Show a box after a visitor scrolls, waits on the page, views multiple pages, clicks a link, or reaches a specific page element. Each box can contain any WordPress content, including shortcodes from form plugins.

Use Boxzilla for newsletter sign-up forms, content upgrades, product offers, important notices, surveys, or any other message that should appear at the right moment without taking over the whole page.

What you can build with Boxzilla

  • Targeted WordPress popups – show boxes only on the posts, pages, or conditions you choose.
  • Scroll-triggered slide-ins – open a box after a visitor scrolls past a percentage of the page or reaches a specific element.
  • Timed call-to-action boxes – show a message after a set number of seconds on the page.
  • Pageview-based prompts – wait until a visitor has viewed several pages before showing a box.
  • Click-triggered modals – open a box from a link, button, or URL hash such as #boxzilla-94.
  • Flexible content – add text, images, forms, shortcodes, embeds, or custom HTML to any box.
  • Visual appearance controls – choose the position, animation, colors, and box style from the WordPress admin.
  • Dismissal control – decide how long a box should stay hidden after a visitor closes it.
  • Small front-end script – Boxzilla adds only 6 kB of JavaScript to your website.

Works with your forms and content

Boxzilla works with plugins that output shortcodes, including Mailchimp for WordPress. Add the shortcode to your box content, choose when the box should appear, and publish it.

Premium add-ons

The core Boxzilla plugin is free. Paid add-ons are available for advanced triggers and integrations, including exit-intent popups and time-on-site targeting.

Browse Boxzilla add-ons

Helpful links

If you are a Boxzilla Premium customer, use the premium support email for a faster reply.

Read the full description on the official page →

Tagged as

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