This plugin hasn’t been tested with the latest 3 major releases of WordPress. It may no longer be maintained or supported and may have compatibility issues when used with more recent versions of WordPress.

CSS-Only Lightbox


Adds a [css_lightbox …] shortcode that generates a CSS-only lightbox for a given image (by URL). Also includes a TinyMCE toolbar button for more easily including the needed attributes for the shortcode.


  1. Upload the plugin files to the /wp-content/plugins/plugin-name directory, or install the plugin through the WordPress plugins screen directly.
  2. Activate the plugin through the ‘Plugins’ screen in WordPress


How do I add a lightbox?
  1. Copy and paste the complete URL for the image you want to make a lightbox for into the WordPress editor
  2. Select the URL with your cursor
  3. Click the “Lightbox” button in the TinyMCE toolbar
  4. Enter the values you’re prompted for. The only one that’s required is a unique ID for the image


  1. Copy and paste the complete URL for the image you want to make a lightbox for into the WordPress editor
  2. Add the opening shortcode, [css_lightbox …] before the beginning of the URL and add the options you want
  3. Attributes you can use with the shortcode are:

* “id” (unique identifier for the image, required)
* “height” (in pixels, without including px)
* “width” (in pixels, without including px)
* “title” (a title for image, displayed when it’s enlarged)
* “caption” (a caption for the image, displayed when it’s enlarged)
* “alt” (alt text for the on-page image)
* “icon” (‘true’ or ‘false’ – whether or not to include a small magnifying glass icon in the top-left of the on-page image, to indicate that it can be enlarged)
1. An example using all of the available options: [css_lightbox id=”uniqueID” height=”400″ width=”400″ title=”A title” caption=”A caption” alt=”Some alt text” icon=”true”]Image URL[/css_lightbox]

What features are coming?
  • The option to use other units for the image dimension, including %, em, rem, vw, and vh
  • Send me suggestions in the support forum!


There are no reviews for this plugin.

Contributors & Developers

“CSS-Only Lightbox” is open source software. The following people have contributed to this plugin.


Translate “CSS-Only Lightbox” into your language.

Interested in development?

Browse the code, check out the SVN repository, or subscribe to the development log by RSS.



First version:
* Adds shortcode
* Adds TinyMCE plugin and button to make the shortcode easier to use