Image Projector – a lightbox


Image Projector – a unique lightbox that provides a responsive full-window view and slider for images in posts or pages, including galleries and carousels. Developed for photos, useful for all types of images.


  • Plug and Play, no editing of code needed
  • Context-dependent image collections automatically created
  • Tolerant to markup variations
  • Suitable for both block themes and classic themes
  • Modify strings – translate frontend to targeted language region
  • Visitor can switch view style and background
  • Zoom and pan
  • Autoplay
  • Optional thumbstrip when relevant
  • Optional support for flipping image and viewing image in grayscale
  • Smooth navigation with mouse, wheel, keyboard or touch gestures
  • Static controls that does not jump with the image size
  • Uses on-demand image loading and preloading – fast startup
  • Supports modern image formats WebP and AVIF when browser supports it
  • Humble and quiet appearance


Collection based on first or featured image in posts. Used on an archive page, it will limit the collection to the images in queried posts (typically category and tag results or search results).

Check out examples of standard behaviour – it may also well be used in combination with 3rd party or WordPress native galleries.

For available admin options, please see settings.

Privacy Notice

This plugin does not track users. It does not store any data to the database other than plugin settings, neither does it send any data to any server.

Last used view style and background style is stored in a cookie on visitor’s device and applied if visitor returns.


  • Full window with cut-off activated.
  • Image with frame.
  • Image with frame, showing thumbstrip.
  • Inside square on dark background. Right-click or click menu icon to show menu.
  • Typical settings page.


New installation:
1. Upload the plugin to your WordPress plugin directory or install it by using the “Add Plugin” function of WordPress
2. Activate the plugin at the plugin administration page.
3. Modify the plugin settings as needed and save changes.

Update existing installation:

Press the Update button for the plugin or follow these steps:

  1. Download zip file from WordPress plugin directory.
  2. Deactivate the plugin.
  3. Unzip the downloaded file to the plugin folder.
  4. Activate the plugin. If any new options are added, check the settings pages and adjust settings as needed.


-or possibly frequently asked…

Why did you make this plugin when there are so many others to chose from?

Good question! Being a photo enthusiast having a WordPress site with one post per image, I realized after a while that there were limited possibilities to show the images in a smooth flow.

To avoid the cumbersome manual navigation between posts, I decided to (try to) write a plugin to collect the featured image (if it has a featured image) or first image from each post, show them in an image slider and then navigate to the post from the image. The content of the slider is then defined based on the context of the page, for intance an archive page that contain the result of a tag query.

Messing around with various gallery plugins – that always require som extra effort to set up – or modifying page template code was not an option.

Eventually the plugin was extended to be applied for general use as well, and the collection of post images and handling of navigation between posts has just become an optional feature that can be turned on/off from the plugin settings page.

Are there any shortcut keys available?

Yes, for those users who are blessed with a keyboard:

right arrow/left arrow – next/previous
C – toggle caption if supported
A or P – toggle autoplay
B – switch background class
L – last image
T – swith between slide in/out or cross-fade transition
V or S – switch view style
X – exit
Z – zoom mode on/off

Which touch gesture or mouse operations are supported?

swipe left/right go to next/previous image
spipe up/down exit viewer
pinch – zoom
doubleclick/doubletap – enter/exit zoom mode
left mouse button down while swiping right/left with mouse – next/previous
ctrl key and left mouse button down while swiping up/down – enter zoom mode and do zooming
mousewheel – zoom when in zoom mode
click caption – turn off display of caption if captions are supported. Turn it on again from menu.

Only one image from a gallery or carousel is shown, and no arrows – why?

Probably due to that the the gallery or carousel wrapper is not detected. Please specify the parent element to all the gallery or carousel elements. If in doubt, do not hesitate to file a support ticket.

Can I choose which posts/pages and images it shall be activated for?

Yes. This can be specified in the plugin settings page.

Can I modify the styles?

Yes. Please have a look into the plugin settings page and the stylesheet located in the plugin directory. If you need advice on how to set up the styles, please leave a support message.

Is it responsive and touch-device friendly?

Yes, I would say so.

Does it work in all versions of all browsers?

Most likely not, but it seem to work as expected in ‘all modern browsers’. There may be several ways of marking up a page so there could be situations when some tuning is necessary. Please leave a message in the support section if it does not work as expected.

How can I use it together with NextGEN gallery?

Select None for Lightbox effects in the Other options page of NextGEN gallery plugin.


November 12, 2023
The only plugin that truly works with webp images, simple to use and with excellent support.
May 31, 2023 2 replies
I needed a way to render images of varied original quality (historical records scanned by a third party) so users could clearly focus on text and read. I tried numerous lightbox, gallery, photo plugins and none accomplished this – magnification / zooming was too limited or resulted in image distortion or loss of responsiveness. What I really wanted was flexible magnification and panning while maintaining clarity and responsiveness. Image Projector does exactly this and doesn’t come with excess features/bloat. When I look for a plugin I read the reviews, I look at whether or not it’s being maintained. Ordinarily, I might have overlooked this one given its age and low number of downloads, but it had been recently updated and was a great fit for my needs. After installing, it didn’t work. Typically, I walk away and simply use something else, but I’d already tried the other options. This time, I went to the support forum. And viola! I have an updated version (5.3) installed and all is great! So, a huge applause for the developer who was responsive and expedient with the needed fix. It is completely compatible with WordPress 6.2.2 and twenty twenty-three. Image Projector is the best I have come across for responsive detailed image viewing with just the right number of customizing options!
April 11, 2023
Thank you very much for this plugin, I have tested many but this one answers everything I was looking for!!
April 22, 2022
This plugin is a good choice if you use DIVI, and want using alternative lightbox. With this plugin can zoom image in lightbox, bright/dark background, lot of control settings, caption support and many more good options. And the support is excellent. I really recommend it.
December 17, 2021
The possibility to choose background; white/dark is so brilliant. Also you can choose different sizes to show your photo in the lightbox + more options. And as a quick respond to my request they added a choice to limit the image to original size. So -the support is also excellent! A very nice and unique plugin indeed. Recommended.
Read all 9 reviews

Contributors & Developers

“Image Projector – a lightbox” is open source software. The following people have contributed to this plugin.




  • Added option in Features to control caption content.
  • Improved image selection in picture tags.
  • Minor updates.


  • Enhanced string translation in Translations to control both menu string and tooltip string.
  • Adjustments to the button visibility settings in Control page.
  • Tested for WordPress 6.5.


  • Added settings section Translations for translating or otherwise modifying strings that appear in the front-end menu and tooltips.


  • Fixed image size issue on Firefox causing width and height not to correspond to actual image.


  • Fixed icon display issue revealed on Firefox browser.


  • Glitch introduced in 5.5 related to swipe velocity fixed.


  • Added option in Features to control if Download command shall be available.
    Availability can be limited to logged-in users. In case it is activated, Download command will be added to the menu. It will only be available for images located at the same domain as the page being viewed.
  • Added option in Controls to hide ‘X’ and zoom button on touch devices to simplify interface. Close and zoom can be controlled by commonly known touch gestures like swipe up/down or tap background to close, pinch in or double-tap to activate zooming.
  • Minor general improvements.
  • Tested for WordPress 6.4.


  • Zoom – click on displayed zoom factor to show image in 1:1.
  • Image counter – added more options to control display of the counter.
  • Fixed error setting zoom center when pinching in view style 1.


  • Late css loading revealed issues on certain themes. Moved css loading back to header.
  • Added option in Features to show image counter. Default off.
  • Now showing current image scale together with current zoom factor when zoom is active.


  • Improvements to the full image and thumb image collection process.


  • Removed use of file_get_contents that was used to load icon definition into page. Some servers may not be set up to allow this, resulting in no icons shown. Icon href now links to icon in svg sprite file included in the plugin.
  • Fixed glitch that could cause a low resolution version of the image to be selected for viewing.