I want to delete “Posts in category: ” and in post. I want the original image to the size of the slide.

Hi Dino

This requires a child theme: https://codex.wordpress.org/Child_Themes

The style.css of your child theme can look like this:

/*
 Theme Name:   Origami Child
 Author:       SiteOrgin
 Template:     origami
 Version:      1.0.0
*/

@import url(“../origami/style.css”);

Copy archive.php from your parent theme folder to your child theme folder and then edit the archive headings as required.

You will need to redo your Customizer settings after activating a child theme.

Here is a copy of a child theme if you need it: https://siteorigin.com/wp-content/uploads/2014/06/origami-child.zip

The Origami Gallery is limited in this manner. The only solution is to either turn it off globally at Appearance > Theme Settings or turn it off for specific galleries by adding:

type=”default”

Into the gallery shortcode. You could then use something like http://www.dfactory.eu/plugins/responsive-lightbox/ or the Carousel module in Jetpack to display your gallery images in a lightbox after click. OR consider another gallery plugin.