Animated gif not animating in background

Do you have a direct link to the gif somewhere that I can use to test further with or a link to the site you’re having the issue on?

https://bartminderman.nl/ is the website. You have to login: user: pre pass: view
The anigif url https://bartminderman.nl/wp-content/uploads/2019/10/Bart-Minderman_werk.gif (still ridiculously heavy), now https://bartminderman.nl/wp-content/uploads/2019/10/Bart-Minderman_werk-2000×1000.gif is used by the theme.

This is because WP resizes the image, when it does it only captures a single frame of the gif in the 2000×1000.gif it saves thus removing the animation.

Since you’re using a child theme, you can fix this in the code and force it to use the full image instead of the resized one WP saves.

Copy over /template-parts/page/content-front-page-panels.php from the default TwentySeventeen folder. Inside of that file, look for the following code near the top

$thumbnail = wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID ), 'twentyseventeen-featured-image' );

Modify it to the following

$thumbnail = wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID ), 'full' );

Save your changes and it should then start playing the gif in the panel area.

Yes! That works.

Thanks, Tom

And for the first background one can do the same modification in /template-parts/page/content-front-page.php