This theme is designed to enhance pictures. UX and UI elements are designed to have the least possible impact on the observation of images. You can see it in action on

• Allegra Martin website;
• Andrea Segliani website;
• Artestudio website;
• Demo website;

PaperPlane photography theme requires Advanced Custom Fields Pro to be installed.
Required set of fields is already included through ACF-JSON folder.
Snippet for required CPT is available here

• display images on all devices without cropping;
• give photographers maximum editorial control;
• web performance;
• SEO friendly also if site is based mainly on images;
• clear or dark navigation mode;
• options to set a custom colors scheme that overrides clear navigation mode;
• toggle all unnecessary navigation information when viewing a photo;
• sell single picture trough PayPal;
• homepage layout adjustable to show one single random picture or a list of works;
• gallery navigation is managed using the native system that WordPress uses to manage the attachments to a post;
• gallery navigation works with keyboard arrows on desktop and with swipe gestures on mobile devices;
• every image has its own URL and a set of microdata based on schema.org ImageObject;
• galleries can now be set up with 3 different options: attachments navigation, Slick Slider or image listing;
• set custom logo for home button or just leave site title as text link;
• optional custom post types for news and books;
• archive pages grid can be setup to use Flexbox or Masonry grid;
• archive pages grid can be setup to show 2 or 3 items per row and images with original proportions or cropped;
• don't ask me why but I made this theme compatible with Microsoft Internet Explorer 💩
• this theme is Retina and HiDPI ready. In order to work you need to upload pictures with height of at least 2048 pixels. If uploaded pictures are smaller it will work anyway but low density images will be shown. With a focus on performance and image quality on any device the price to pay is that every uploaded image is optimized by WordPress "add_image_size" in 19 versions. Be aware of that because you'll need disk space on your server - but I'm sure photographers are familiar with disk space issues 😏
• PWA - ready: you can enable PWA from "Site settings > Color & Typo options";

• 💩 before activating this theme check if Advanced Custom Fields Pro is installed and active!
• best option: install theme using GitHub Updater in order to see available updates in the future;
• create a page and set "Home" as template;
• configure requested options;
• in WordPress "Settings > Reading" options set it as home page;
• "Theme Settings > Theme version" option can be useful for forcing cache clearing;
• go to "Site settings" and set both "Color & Typo options" and "Image gallery" options. Be sure to setup all options in order for the theme to work;
• in "Color & Typo options" page you can include one or more Google Fonts and you can specify font-familiy and font-weight for headings, paragraphs and more.
• two menus are available: one for header and another for navigation reachable trough hamburger menu. Be sure not to add too many links in header menu because it's designed to be compact;
• to activate clear/dark mode toggle just add a link to your menu with these settings:
  • URL: #
  • Navigation label: <i class="icon-adjust"></i>
  • Title attribute: Switch clear/dark mode
  • CSS Classes: bright-switch
  • Description: Turn website from light background color/dark texts to dark background color/light texts and vice versa.
• if you need a news section there's a "News" custom post type for it. To add a news listing page create a new page and assign "News" as template. News published within 90 days are automatically listed in homepage;
• if you need a books section there's a "Books" custom post type for it. To add a books listing page create a new page and assign "Books" as template;
• if you want to sell an image you must first configure the basic information for PayPal and then, from the editor of the single image in the media library, enable the sale and set the price;
• if you want to use custom favicons please refer to Favicon & App Icon Generator. Generate your set of favicons and replace them into "assets/images/favicons" folder;
• if you want to enable visitors to use galleries as slideshow with autoplay you can do so by setting to yes "Show play/pause button?" in Site settings > Image gallery options;

Galleries use WordPress posts and post attachments. To create a gallery:

• create a new post;
• upload to the post all images you want to add to the gallery - the gallery is set by post attachments. Don't insert pictures in content, use "the_content" to describe your project instead: navigation trough images is generated automatically;
• eventually re-order images using WordPress media panel: the image set as "Featured Image" should also be the first when you order imeges trough WordPress media library -> Uploaded to this post;
• publish post;
• you can also use posts to display videos. To do so, use the custom field "Video embed". Using a post to display a video will disable the gallery's navigation for that post (only one video per post);
• tip: file title or file name will define the URL when viewing a single image. To have nice URLs try to name your files nicely like "picture-title.jpg" so that the URL will be like "your-site.xyz/project-name/picture-title.jpg"

• in "Site settings > Image gallery options" set "Do you want to sell your photos?" option to "Yes" and then confgure the required fields;
• in Media Library select the picture you want to sell: set "Enable the sale of this image?" to "Yes" and then choose the price;
• done! When viewing the picture on front end a button with a credit card icon will appear in top bar menu;

These plugins are suggested based on my experience and are therefore a simple tip.

• GitHub Updater to install theme and keep it updated directly from GitHub repo.
• WP Fastest Cache to improve loading time - avoid scripts combining option if you want to keep Microsoft Internet Explorer 💩 compatibility;
• Contact Form 7: CSS rules perfectly define appearence of forms created with Contact Form 7. In CF7 editor just wrap your form into a DIV with class "form-hold". An integration with Akismet is suggested to prevent spam;
• Flamingo is a message storage plugin originally created for Contact Form 7;
• WebP Express is a must have plugin if your hosting provider supports WebP image conversion tools;
• Yoast SEO to boost SEO;

• Swup;
• LazyLoad;
• Tocca.js;
• Infinite Scroll;
• Masonry;
• Slick Slider;
• Icons from Fontello;

Here's a Lighthouse report. You can do even better by converting images into WebP format.

I'm lazy, so instead of creating a page to manage theme's options in a traditional way, I preferred to use Advanced Custom Fields Pro.
And yes, I'm so lazy that I don't even want to sell this theme and then have to provide support.

{"news":{"name":"news","label":"News","singular_label":"News","description":"","public":"true","publicly_queryable":"true","show_ui":"true","show_in_nav_menus":"true","show_in_rest":"true","rest_base":"","rest_controller_class":"","has_archive":"false","has_archive_string":"","exclude_from_search":"false","capability_type":"post","hierarchical":"false","rewrite":"true","rewrite_slug":"","rewrite_withfront":"true","query_var":"true","query_var_slug":"","menu_position":"","show_in_menu":"true","show_in_menu_string":"","menu_icon":"","supports":["title","editor","thumbnail"],"taxonomies":[],"labels":{"menu_name":"","all_items":"","add_new":"","add_new_item":"","edit_item":"","new_item":"","view_item":"","view_items":"","search_items":"","not_found":"","not_found_in_trash":"","parent_item_colon":"","featured_image":"","set_featured_image":"","remove_featured_image":"","use_featured_image":"","archives":"","insert_into_item":"","uploaded_to_this_item":"","filter_items_list":"","items_list_navigation":"","items_list":"","attributes":"","name_admin_bar":""},"custom_supports":""},"book":{"name":"book","label":"Books","singular_label":"Book","description":"","public":"true","publicly_queryable":"true","show_ui":"true","show_in_nav_menus":"true","show_in_rest":"true","rest_base":"","rest_controller_class":"","has_archive":"false","has_archive_string":"","exclude_from_search":"false","capability_type":"post","hierarchical":"false","rewrite":"true","rewrite_slug":"","rewrite_withfront":"true","query_var":"true","query_var_slug":"","menu_position":"","show_in_menu":"true","show_in_menu_string":"","menu_icon":"","supports":["title","editor","thumbnail"],"taxonomies":[],"labels":{"menu_name":"","all_items":"","add_new":"","add_new_item":"","edit_item":"","new_item":"","view_item":"","view_items":"","search_items":"","not_found":"","not_found_in_trash":"","parent_item_colon":"","featured_image":"","set_featured_image":"","remove_featured_image":"","use_featured_image":"","archives":"","insert_into_item":"","uploaded_to_this_item":"","filter_items_list":"","items_list_navigation":"","items_list":"","attributes":"","name_admin_bar":""},"custom_supports":""}}

function cptui_register_my_cpts() {

	/**
	 * Post Type: News.
	 */

	$labels = [
		"name" => __( "News", "custom-post-type-ui" ),
		"singular_name" => __( "News", "custom-post-type-ui" ),
	];

	$args = [
		"label" => __( "News", "custom-post-type-ui" ),
		"labels" => $labels,
		"description" => "",
		"public" => true,
		"publicly_queryable" => true,
		"show_ui" => true,
		"show_in_rest" => true,
		"rest_base" => "",
		"rest_controller_class" => "WP_REST_Posts_Controller",
		"has_archive" => false,
		"show_in_menu" => true,
		"show_in_nav_menus" => true,
		"delete_with_user" => false,
		"exclude_from_search" => false,
		"capability_type" => "post",
		"map_meta_cap" => true,
		"hierarchical" => false,
		"rewrite" => [ "slug" => "news", "with_front" => true ],
		"query_var" => true,
		"supports" => [ "title", "editor", "thumbnail" ],
	];

	register_post_type( "news", $args );

	/**
	 * Post Type: Books.
	 */

	$labels = [
		"name" => __( "Books", "custom-post-type-ui" ),
		"singular_name" => __( "Book", "custom-post-type-ui" ),
	];

	$args = [
		"label" => __( "Books", "custom-post-type-ui" ),
		"labels" => $labels,
		"description" => "",
		"public" => true,
		"publicly_queryable" => true,
		"show_ui" => true,
		"show_in_rest" => true,
		"rest_base" => "",
		"rest_controller_class" => "WP_REST_Posts_Controller",
		"has_archive" => false,
		"show_in_menu" => true,
		"show_in_nav_menus" => true,
		"delete_with_user" => false,
		"exclude_from_search" => false,
		"capability_type" => "post",
		"map_meta_cap" => true,
		"hierarchical" => false,
		"rewrite" => [ "slug" => "book", "with_front" => true ],
		"query_var" => true,
		"supports" => [ "title", "editor", "thumbnail" ],
	];

	register_post_type( "book", $args );
}

add_action( 'init', 'cptui_register_my_cpts' );