ACF

• The visual field builder lets you create and configure custom fields from the WordPress admin without writing any code—adding fields like text, images, dates, color pickers, and more in a few clicks.
• Over 30 field types are included in the free version, covering simple inputs (text, textarea, number, email), selection fields (dropdown, radio, checkbox), media fields (image, file), relational fields (post object, taxonomy, user), and presentation fields (message, accordion, tab).
• Fields can be attached to any content type in WordPress—posts, pages, custom post types, users, taxonomy terms, media, comments, and custom options pages—giving complete control over where custom data appears.
• Custom post types and taxonomies can be registered directly from the ACF admin interface without code, replacing the need for a separate CPT plugin or manual register_post_type() calls.
• Location rules let you define precisely which edit screens display a given field group—for example, showing a "featured quote" field only on posts assigned to a specific category.
• Developer-friendly functions (get_field(), the_field(), have_rows()) provide a clean PHP API for retrieving and displaying custom field data inside theme templates.
• Local JSON auto-export saves field group configurations as .json files in your theme, allowing version control and easy synchronization across development, staging, and production environments.

PRO-ONLY CORE FEATURES

• The Repeater field creates a set of sub-fields that can be duplicated as many times as needed, making it practical for managing lists of structured data like team members, FAQs, or event schedules.
• The Flexible Content field works as a full content layout manager—allowing editors to add, reorder, and delete predefined layout blocks within a single field, which is useful for modular page building without a visual page builder.
• ACF Blocks provides a PHP-based framework for building custom Gutenberg blocks using ACF fields, allowing developers to create editor-native block types without writing React or JavaScript.
• The Gallery field gives editors an intuitive interface for managing collections of images, including adding, sorting, and editing multiple image entries in a single field.
• Options Pages lets you add custom admin pages with ACF fields that store site-wide settings—useful for global header/footer options, API keys, or theme configuration.
• The Clone field lets you reuse existing field or field group configurations across multiple field groups without duplicating settings manually.