Technical Requirements

Online Exhibitions is built on the Omeka S platform. For more information regarding Omeka S please refer to their online user manual:

The Library is committed to supporting and showcasing Library, faculty, and student exhibitions that meet the technical requirements outlined below.

Themes & Modules

The Library supports pre-built and community supported Omeka S themes and modules to ensure reliability and consistent functionality. Based on an assessment of available themes, the Library has chosen three suitable Omeka S themes: Thanks, Roy; Default; and Foundation. For a quick preview of these themes please visit the Omeka S themes:  

The Library supports modules depending on the lifetime of the project and the level of active community support in maintaining them. For an overview of the modules, please visit the Omeka S modules:

Digital Objects

Digital objects describe the different media used for your exhibition, such as images, videos, audio, etc.

Naming Convention

Prior to adding any digital objects to your exhibition, review your existing digital objects’ filenames and consider developing a consistent naming convention that is both short and descriptive. Appropriately naming each object in the exhibition will improve the findability and discoverability of your content on the web. Here are a few recommended approaches to naming your digital objects, followed by some examples:



Images should be selected intentionally and purposefully to ensure they connect with the overall narrative of the exhibition. However, before using any images in your exhibition, you need to ascertain that you have the legal rights to use and share them publicly. There may be instances where a licence is required. If you have any questions regarding the use of any images or digital objects, please contact the digital projects team.

The following guide describes methods of preparing your images for your exhibition:




PDFs are popular as methods of packaging information for mass distribution and they are convenient for accessing documents that are meant to be printed. However, PDFs should be avoided as an alternative to content display. Leading User Experience (UX) research organizations recommend the use of HTML text blocks instead because they offer better navigation and interface elements that allow users to browse, find, and explore exhibition content in a more friendly and efficient manner.

In the event a PDF is used, here are some recommended steps to optimize it for the web:

  1. When creating a PDF, enable the “optimize for web” options to reduce file size and avoid loss in PDF quality.
  2. If choosing to create a PDF, ensure the PDF meets accessibility standards.
  3. Avoid exporting an image to .pdf. Images are best saved as .jpeg or .png files.
  4. Acceptable PDF sizes are between 2MB – 5MB
  5. Tools used to compress PDFs:
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