This is the RefinePro knowledge base about OpenRefine. We build it over the years, and keep adding to it. From great tutorials and how-to, to handy GREL expressions and links to external resources, you will find here one of the most comprehensive list of resources to learn OpenRefine.

For a comprehensive documentation you should refer to the official OpenRefine wiki.

Don't where to get started? Search for a specific function below, or read our most popular article from the right side menu.


[Video] Introduction to GREL

In partnership with the OKFN School of Data , we recorded last November an hour Skillshare on Refine GREL Language.  Always wonder how to get started with the Generic Refine Expression Language (GREL)?

Watch this one hour tutorial and learn the basic of the language along with simple expression. Further tutorial will be published to go through each functions presented in this video.