WordPress is designed so that it can be enhanced by installing third-party plugins. In addition to open source and commercial plugins, American Centuries depends on several site-specific plugins that were written for this project.

AC-specific Plugins

These plugins written for American Centuries must be installed and enabled to make the site work as intended.

• ac-core. Required additions to functions.php for American Centuries.
• ac-iiif-manifest. Write a IIIF manifest for a collection item page on update. Include all attached images, include ACF transcription field from each attachment as IIIF annotation.
• ac-pp-synch. Extract metadata fields for a collection item from PastPerfect, using PastPerfect’s item API

publicly-available Plugins

Site data structure

• Advanced Custom Fields PRO. Customize WordPress with additional metadata fields.
• Custom Post Type UI. Admin UI panel for registering custom taxonomies
• Custom Taxonomy Order. Allows for the ordering of categories and custom taxonomy terms through a simple drag-and-drop interface.

Site navigation

• Breadcrumb NavX. Adds a breadcrumb navigation showing the visitor’s path to their current location.
• Relevanssi. This plugin replaces WordPress search with a relevance-sorting search.
• FacetWP. Advanced Filtering for WordPress, used for Site Search
• FacetWP – Cache. Caching support for FacetWP
• FacetWP – Conditional Logic. Toggle facets based on certain conditions
• FacetWP – Flyout menu. Displays a flyout facet menu
• FacetWP – Relevanssi integration. Relevanssi integration for FacetWP
• FacetWP – Submit button. Adds a shortcode to generate a “Submit” button

Admin user interface

• Advanced Editor Tools. Extends and enhances the block editor (Gutenberg) and the classic editor (TinyMCE)
• Easy Replace Image. Allows you to replace an attachment file by uploading another image or by downloading one from a specified URL, without deleting the attachment.

Image management

• WP Offload Media. Offload your media assets to DigitalOcean Spaces.
• File Upload Types. Allow WordPress to accept and upload any file type extension or MIME type, including custom file types. Used to allow JP2 uploads in Media Library.

Page templates

• Block Visibility. Provides visibility controls for all WordPress blocks.
• Display Posts. Display a listing of posts using the display-posts shortcode
• TablePress. Embed interactive tables into your WordPress pages.
• Font Awesome. The official way to use Font Awesome icons.

Site management

• SpinupWP. SpinupWP helper plugin.
• Limit Login Attempts Reloaded. Block excessive login attempts and protect your site against brute force attacks.
• Open Graph and Twitter Card Tags. Improve social media sharing by inserting Facebook Open Graph, Twitter Card and SEO Meta Tags on your WordPress website pages.
• XML Sitemap Generator for Google. Improves SEO using sitemaps for best indexing by search engines like Google, Bing, Yahoo and others.
• WP Downgrade | Specific Core Version. WP Downgrade allows you to either downgrade or update WordPress Core to an arbitrary version of your choice.
• WP Migrate Lite. Migrate your database. Export full sites including media, themes, and plugins. Find and replace content with support for serialized data.

Data management

• WP All Export Pro. Export any post type to a CSV or XML file. Edit the exported data, and then re-import it later using WP All Import.
• WP All Export – ACF Export Add-On Pro. Export ACF data from WordPress. Requires WP All Export Pro.
• WP All Import Pro. The most powerful solution for importing XML and CSV files to WordPress. Import to Posts, Pages, and Custom Post Types. Support for imports that run on a schedule, ability to update existing imports, and much more.
• WP All Import – ACF Add-On. Import to Advanced Custom Fields. Requires WP All Import & Advanced Custom Fields.