Hi @nezteb,
You are correct in your assumptions. Timeline Express automatically generates the timeline banner image size whenever a new image is uploaded (assuming you have uploaded the images after you have installed and activated Timeline Express).
Those images are then referenced on the timeline as the banner image, which is why you are seeing the 350×120 image size.
That image size is registered by Timeline Express and the image size is registered as timeline-express (reference).
https://github.com/EvanHerman/timeline-express/blob/1df2289f5522bad93851f1a94f7ca6081682e5c3/lib/classes/class.timeline-express.php#L35
There are a few ways that you can work around this. If you are comfortable working with code, or at least adding code to the functions.php file of your theme – you can use the built-in filters of Timeline Express to specify an alternate image size to use. This would prevent you from having to edit the plugin core code while allowing you to alter the image size of the image on the timeline.
We have documentation setup explaining how this can be achieved here:
https://www.wp-timelineexpress.com/documentation/how-do-i-use-a-larger-announcement-thumbnail-size/
As an example, if you wanted to use the ‘full’ image size you could easily specify ‘full’ as the image to use when hooking into the timeline-express-announcement-img-size filter.
Example (full image sizes on the timeline announcement):
function change_timeline_express_announcement_image_size( $image_size, $post_id ) {
$image_size = 'full';
return $image_size;
}
add_filter( 'timeline-express-announcement-img-size' , 'change_timeline_express_announcement_image_size', 10, 2 );
Another alternative to writing some code to do the job is to make use of our Toolbox add-on, which would allow you to specify the image size from the admin dashboard.
https://www.wp-timelineexpress.com/products/timeline-express-toolbox-add/
Either way, it should be easily achievable without you having to alter any of our code and to allow you to update the plugin without any impact.
Let us know if that helps you out!
