Title: ReformBox Author: Tsubu Published: March 25, 2026 Last modified: March 26, 2026 --- Search plugins ![](https://s.w.org/plugins/geopattern-icon/reformbox.svg) # ReformBox By [Tsubu](https://profiles.wordpress.org/tbshiki/) [Download](https://downloads.wordpress.org/plugin/reformbox.0.3.3.zip) * [Details](https://sa.wordpress.org/plugins/reformbox/#description) * [Reviews](https://sa.wordpress.org/plugins/reformbox/#reviews) * [Installation](https://sa.wordpress.org/plugins/reformbox/#installation) * [Development](https://sa.wordpress.org/plugins/reformbox/#developers) [Support](https://wordpress.org/support/plugin/reformbox/) ## Description ReformBox extends WordPress Lightbox functionality beyond images. It currently supports Group, Paragraph, and Video blocks with poster images directly, while delegating Image lightbox behavior to WordPress core. For `core/image`, ReformBox only syncs the sidebar toggle with core lightbox settings. [This plugin is developed on GitHub.](https://github.com/tbshiki/reformbox) **Supported Blocks:** * Image Block – Uses WordPress core lightbox behavior (ReformBox panel toggles core `lightbox.enabled`) * Video Block – Opens in a lightbox when a poster image is set (poster acts as the click trigger) * Group Block – Supports both `same` mode (same content in page + modal) and `split` mode (separate Preview/Modal direct child Group slots) * Paragraph Block – Click to open itself in a lightbox **Features:** * No-code lightbox creation via block editor controls * Core-first image lightbox integration (`core/image`) * Core-aligned overlay markup for custom lightboxes * Core-aligned zoom animation * ESC key and overlay click to close * Accessible (ARIA attributes, focus management, keyboard navigation) * Group split mode with Preview/Modal slot mapping * Safe split fallback: if no Modal slot is assigned, Preview content is used * Lazy-loaded assets (CSS/JS only loaded when needed) * Self-lightbox videos defer preload/autoplay until opened * Core image workflow integration without overriding core image rendering * Global overlay background color and opacity controls in Settings > ReformBox * Plugin list row includes a Settings action link for quick access * Lightweight and performant ## Installation 1. In your WordPress admin, go to Plugins > Add New Plugin 2. Search for `ReformBox` 3. Click `Install Now`, then click `Activate` 4. Open the block editor and select any supported block 5. Enable ReformBox in the block’s settings panel (for Image blocks, use `Enable Core Image Lightbox`) For Video blocks, add a poster image in the block settings before enabling ReformBox. ## FAQ ### Does ReformBox replace the core image lightbox? No. `core/image` self-lightbox behavior is delegated to the WordPress core lightbox. ReformBox extends the surrounding workflow so images, videos, and container content can share a common modal workflow. For images, the ReformBox sidebar toggle only updates the core `lightbox.enabled` setting; the clickable link behavior and overlay rendering are still handled by WordPress core. ### Why does Video lightbox require a poster image? Video self-lightbox uses the poster image as the visible in-page trigger and loads the full video inside the overlay. Without a poster image, ReformBox keeps the video lightbox toggle disabled. ### How does Group split mode work? Enable ReformBox on a Group block, then switch `Display Mode` to `Split`. Inside that parent Group, set direct child Group blocks to `Preview`, `Modal`, or `Preview + Modal (Both)` in the sidebar. ``` Preview content is rendered in-page, `Modal` content is rendered inside the lightbox overlay, and unassigned child Groups (`none`) are rendered in both. If modal content is still empty, ReformBox automatically falls back to `Preview` content. Slot Type controls are shown only on direct child Group blocks of the split parent. ``` ### Where can I change ReformBox overlay appearance? Open `Settings > ReformBox` in WP Admin. You can set the ReformBox overlay background color and opacity there. The same settings screen is also linked from the plugin row action (`Plugins > ReformBox > Settings`). ## Reviews ![](https://secure.gravatar.com/avatar/cf491a59cec4bd03bf40b7dfb352c00ae8f40681380b53c73d42a53f79f19790? s=60&d=retro&r=g) ### 󠀁[めっちゃ便利！](https://wordpress.org/support/topic/%e3%82%81%e3%81%a3%e3%81%a1%e3%82%83%e4%be%bf%e5%88%a9%ef%bc%81/)󠁿 [Kotaro Kitamura](https://profiles.wordpress.org/koots2020/) March 26, 2026 段落、動画、グループブロックにもLightboxを拡張できて凄い！！ かゆいところに手が届く シンプルで素敵なプラグインです！ [ Read all 1 review ](https://wordpress.org/support/plugin/reformbox/reviews/) ## Contributors & Developers “ReformBox” is open source software. The following people have contributed to this plugin. Contributors * [ Tsubu ](https://profiles.wordpress.org/tbshiki/) “ReformBox” has been translated into 1 locale. Thank you to [the translators](https://translate.wordpress.org/projects/wp-plugins/reformbox/contributors) for their contributions. [Translate “ReformBox” into your language.](https://translate.wordpress.org/projects/wp-plugins/reformbox) ### Interested in development? [Browse the code](https://plugins.trac.wordpress.org/browser/reformbox/), check out the [SVN repository](https://plugins.svn.wordpress.org/reformbox/), or subscribe to the [development log](https://plugins.trac.wordpress.org/log/reformbox/) by [RSS](https://plugins.trac.wordpress.org/log/reformbox/?limit=100&mode=stop_on_copy&format=rss). ## Changelog #### 0.3.3 * Unified ReformBox overlay controls into a single background color + opacity setting * Improved consistency of overlay background rendering across ReformBox lightboxes * Kept WordPress core lightbox appearance override separate from ReformBox overlay controls #### 0.3.2 * Improved overlay styling and close behavior to avoid unintended interactions with page content and WordPress core lightbox instances #### 0.3.1 * Clarified Image and Video lightbox behavior in the plugin documentation #### 0.3.0 * Improved internal code quality and release preparation for the plugin #### 0.2.0 * Added Group split mode and refined lightbox behavior for content and media blocks #### 0.1.0 * Initial release * Group block as lightbox container * Image/Video block self-lightbox * Paragraph block as self-lightbox * Core-aligned zoom animation * Keyboard and accessibility support ## Meta * Version **0.3.3** * Last updated **3 weeks ago** * Active installations **10+** * WordPress version ** 6.4 or higher ** * Tested up to **6.9.4** * PHP version ** 7.4 or higher ** * Languages * [English (US)](https://wordpress.org/plugins/reformbox/) and [Japanese](https://ja.wordpress.org/plugins/reformbox/). * [Translate into your language](https://translate.wordpress.org/projects/wp-plugins/reformbox) * Tags * [blocks](https://sa.wordpress.org/plugins/tags/blocks/)[gutenberg](https://sa.wordpress.org/plugins/tags/gutenberg/) [lightbox](https://sa.wordpress.org/plugins/tags/lightbox/)[modal](https://sa.wordpress.org/plugins/tags/modal/) [popup](https://sa.wordpress.org/plugins/tags/popup/) * [Advanced View](https://sa.wordpress.org/plugins/reformbox/advanced/) ## Ratings 5 out of 5 stars. * [ 1 5-star review ](https://wordpress.org/support/plugin/reformbox/reviews/?filter=5) * [ 0 4-star reviews ](https://wordpress.org/support/plugin/reformbox/reviews/?filter=4) * [ 0 3-star reviews ](https://wordpress.org/support/plugin/reformbox/reviews/?filter=3) * [ 0 2-star reviews ](https://wordpress.org/support/plugin/reformbox/reviews/?filter=2) * [ 0 1-star reviews ](https://wordpress.org/support/plugin/reformbox/reviews/?filter=1) [Your review](https://wordpress.org/support/plugin/reformbox/reviews/#new-post) [See all reviews](https://wordpress.org/support/plugin/reformbox/reviews/) ## Contributors * [ Tsubu ](https://profiles.wordpress.org/tbshiki/) ## Support Got something to say? Need help? [View support forum](https://wordpress.org/support/plugin/reformbox/)