• Frequently Asked Questions
• Can I somehow host OpenRefine for others to access ?
• OpenRefine does not start after clicking the .exe, it only opens and closes a window
• Only shows Logo when starting, or Open Project doesn't work, or shows mixed up HTML content in my browser
• HTTP ERROR 500 Butterfly Error when starting
• Out of Memory Errors - Feels Slow - Could not reserve enough space for object heap
• I have a question. Where do I ask?
• I've found a bug or want a new feature. What should I do?
• Where is my data stored?
• How do I change the workspace directory that I want Refine to use for its project storage ?
• How do I change the IP address that OpenRefine uses?
• How do I change the Port that OpenRefine uses?
• I am having trouble connecting to OpenRefine with my browser
• What syntax of regular expression (regex) does OpenRefine support?
• What syntax should I use with GREL for constructing URLs correctly and avoid HTTP errors and other pitfalls, for instance, when working with JSON strings within a URL or to create a HYPERLINK, etc ?
• How can I delete a whole row or several rows?
• How do I make a Text Facet show more than 2000 choices?
• How do I find duplicates in a column?
• Can OpenRefine be used as a piece of a larger ETL pipeline?
• Can I run OpenRefine headless without a browser and what options are there?
• cross() function does not work for me
• Importing large files - "Memory usage: 100%"
• WARNING about Python/Jython illegal reflective access operation has occurred
• Accessibility