| Hosting requirements |
Linux operating system; Apache HTTP server (with mod_rewrite enabled); MySQL version 5.0 or greater; PHP scripting language version 5.4 or higher (with mysqli and exif extensions installed); Imagemagick for file derivatives |
Linux operating system; Apache (with AllowOverride set to “All” and mod_rewrite enabled); MySQL 5.6.4+ (or MariaDB 10.0.5+); PHP 7.2+ (latest stable version preferred, with PDO, pdo_mysql, and xml extensions installed); Imagemagick (+6.7.5) |
| Core building block |
Item |
Item |
| Grouping Items |
Collections (each Item may only belong to a single Collection) |
Item Sets (Items may belong to an unlimited number of Item Sets) |
| Descriptive schema |
Dublin Core Metadata Initiative Terms and user editable descriptors for Item Type metadata |
Installs with DCMI Terms, DCMI Types, BIBO, and FOAF linked data vocabularies. Users can import other LOD vocabulary. Then, users can design Resource Templates with LOD Vocab properties to create a custom descriptive framework. |
| Data types |
Text or HTML |
Text, Omeka S Resource, URI are core and can be extended to include a range of numeric data types and controlled vocabularies |
| Media |
File upload via browser (bulk upload via CSVImport or Dropbox plugins) |
File upload via browser (bulk upload via CSVImport, File Sideload modules, Omeka2Importer, Fedora Connector, DSpace Connector), HTML, IIIF image, oEmbed |
| Permission levels |
Users - Omeka Classic User Manual |
User Permissions - Omeka S User Manual |
| Publication status |
Public/Private for Items, Collections, Pages, Exhibits |
Public/Private for Items, Item Sets, Sites, Pages |
| Multiple sites/Exhibits |
One site, with an unlimited number of exhibits (built using the Exhibit Builder plugin) |
Many sites are possible, but installation can also be set to a single site; no external Exhibit Builder module |
| Starter pages |
Browse Items, Browse Collections |
Welcome, and Custom link pages: Custom URL, Browse, Browse item sets, and others that are generated by modules |
| Page building method |
Within exhibits, pages are constructed from blocks |
Within sites, all pages are built with blocks |
| API |
Built-in |
Built-in, REST |
| Output formats |
omeka-xml, omeka-json, dcmes-xml, json, atom, rss |
JSON-LD |
