Using Omeka S to manage your collection

This article is a follow-up of an older one 🇫🇷, where I wondered myself what software I should use to manage my cameras & lenses collection. Back then, I explained I chose Omeka, an open-source solution developed by the Center for History and New Media, George Mason University, and broadly used by cultural institutions across the world.

Logo OmekaReally, that was well meant and I totally wanted to catalog all my cameras but, actually… I never saw this through to the end. I stumbled on the lack of dynamic linking between items and dynamic list of properties.

Add to this my own lack of motivation, procrastination and the song of all those sirens/cameras calling on my shelves, and you’ll understand why I did not pushed further.

But everything changed at the end of 2017, when Omeka S was released…

What is Omeka S?

It is not a new version of what is now called Omeka Classic. It is a brand new software, although it shares with its predecessor the same ambition: being both a content management system for libraries, archives, items, and a publication system to ease the access to these items.

Omeka S brings an important set of new features: first of all the semantic data management, that is the ability to describe your items (in my case cameras and lenses) in a way that lets you share them easily. To be honest this major feature is mainly aimed at cultural institutions.

So next, and more interestingly, while an Omeka Classic installation let you manage one single public site, this new version offers the ability to create an unlimited number of showcase sites as sub-domains sharing the same data. You can on a single install manage several collections (cameras, but also vintage phone cards, because why not?) and then showcase them apart. Better still: you can showcase your whole collection on one site, and save another specific presentation site for a subset (specific maker, era,…). Let your imagination run wild.

Finally, and most importantly, Omeka S handles dynamic links between content, opening a world of possibilities for presentation and advanced navigation: on an item page, you can insert links to other items sharing a same property. This is mostly what I was wishing for when I wanted a way to list compatible lenses for a camera, or list a manufacturer’s cameras on a single page.

How does it work?

Omeka S has an administration back-end site where you’ll do most of the management tasks for your collection. Your can also manage showcase sites and users, but this not necessary, nor mandatory.

Item sets

One of your fist taks will be to configure your item sets. These are simply your collections, where you’ll be sorting your items. I, for example, created 2 collections: cameras and lenses. A collection has a title and a description that helps define what you want to store inside, but nothing restrictive for later use.

Also note that the creation and usage of item sets is completely optional. Your items can live and you can browse them outside of item sets. This is only about good practice and will eventually help you in building your showcase sites with Omeka S.

Resource templates

Your next move will be to define one or more resource templates. This is when you’ll have to wonder: what information should you store in each item of your collection?

A resource template is a list of data (properties, attributes, etc.) you will select and order to create a form template.

For my own cameras, I created a model that includes attributes such as name, maker brand, camera type, a description, photographic medium and format… I created only one template that includes most of the data I need.

You’ll be able to add another attributes at a later time, so do not be afraid to start simple, without looking for absolution exhaustiveness. Typical case: properties that are a bit exotic, shared by a very few elements, can be included in the description field.

Create your items

Once your items sets and resource templates created, you are ready to create your individual items! Click the “Add new item” button, then select the resource template you just created: the list of properties appears on screen. Let’s go!

To fill up each property, you are given 3 possibilities:

  • Plain text, without formatting: to describe a name or specificity of your element – this is the simplest, the one you’re already doing in Excel (yes I know);
  • URI: this is a web link and a label that can drive to an external site – this is our good old hyperlink;
  • Finally, the most interesting: another resource on your Omeka install! You can select an item previously created, or even an item set. Once this link created, Omeka will provide a way to browse both ways between your new item and the other.

In my case, I created individual items for manufacturer brands in my camera collection. When I fill the “maker” property of a camera with this resource, I’m able to browse to the maker page that lists all cameras and lenses sharing this brand.

Better still: I’m able, using lens mounts as resources, to list on a single page all cameras and lenses compatible with this mount! One picture being worth a thousand words, have a look below:

To complete your attributes, Omeka lets you upload any media you wish for: images, PDF documents, videos or sounds, etc., that will then be listed on the item page.

Finally, the last tab of the new item form will let you select the item sets in which you intend to list your newly created item.

Advanced search

The admin control panel offers an advanced search feature for any property you filled up  in your items pages. A dynamic form lets you add any number of criteria, and precise search conditions are also available.


From there, the software features list is already comprehensive when it comes to collection management. You can stop there if your items must remain private. But if you wish to render all or part of it on a public showcase, you will need to configure one or more sites.

Without going into too much details, you can choose what contents your site will showcase, but also define the whole browsing configuration, create dynamic pages including text, items sub-sets (using search queries) or even single items.

Finally, themes are available (e.g. The Daily, shown below) and fully customizable to modify sites style and content. Some are designed for mobile use. There is something for everyone.


I did not talk much about vocabularies in Omeka S. The most meticulous of us will be able to create and import in Omeka S a set of custom properties. This is possible using tools like WebProtégé (free). This is useful to easily find your attributes (e.g. in search forms), but totally optional.

For users who do not strive for sharing their collection with a museum, you can disregard this advanced configuration and instead use the default vocabularies offered in Omeka S: Dublin Core should give you all you need to describe your items.

Conclusion : adopted!

Omeka Classic had pitfalls that led me to some discouragement, but Omeka S and its new features made everything clever, fast and simple, and finally helped me catalog my whole personal collection.

I’ve been able to make it evolve on several occasions: new items easily added from mobile, new properties (and ways to search for items lacking some), site customization, and I’ve even developed a module in order to restrict access to private collections!

More info

If you want to discover about Omeka S, here is where you’ll find comprehensive information:

Thanks for reading to the end of this (long) article. If you have questions to help you start documenting  your own collection, cameras or other, do not hesitate and ask in the comments. Please share the article on social media if you find it interesting enough, and have a nice day!

2022 update: My collection is now online using Omeka-S. Check it out!

Author: Laurent

In his thirties, film photography amateur, vintage cameras collector, precision DIY hobbyist.

5 thoughts on “Using Omeka S to manage your collection”

  1. Hi Laurent, Nice post. I like Omeka S as well and have been testing it at work (academic library). I’ve been wondering about experimenting with it for a personal image gallery site but thinking it might be overkill, or themes would need more customization than I know how to do. Is there a link to your ‘live’ site itself? I couldn’t find one in the article. Thanks!


    1. Hi Carl, and thanks for your nice comment.

      I’ve built my Omeka site so that my collection remains private, and I’m preparing a short “best practice” article on how to do so.
      But I also was able to create a demo site in a few steps: Demo Collection
      You’ll see The Daily theme has a nice carousel view. How your images will display is totally dependent on the theme applied.

      Have a nice day!

  2. I haven’t used such a software before but definitely going to give it a try as I am actively seeking advice on this aspect. So, your review was quite helpful. Thanks a lot for sharing.

  3. Hi Carl,
    I stumbled upon your site while looking for Omeka S themes in action. I like how your site looks, which theme did you end up using? It looks a bit different from the example above for “The Daily” (I like this one visually, but want the pages visible on a horizontal bar like you have them now, not a drop down menu).

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