filter

jetpack_default_gallery_type

Filter the default gallery type.

Parameters

$value
string

A string of the gallery type. Default is ‘default’.

Changelog

How to use this hook

See “How to use actions and filters to customize Jetpack”.

Notes

While Jetpack doesn’t include an option to allow you to change the default Gallery type, you can use the jetpack_default_gallery_type filter to change that on your site, like so:
function jeherve_custom_gallery_type() {
        return 'circle';
}
add_filter( 'jetpack_default_gallery_type', 'jeherve_custom_gallery_type', 30 );