What is a CUR file?
A .CUR file is primarily a Windows cursor image file used by the Microsoft Windows operating system. It stores the graphic data for the mouse pointer. A .CUR file uses a nearly identical structure to an .ICO (icon) file, but it contains a designated "hotspot". This hotspot tells the operating system the exact pixel that registers a mouse click. While most .CUR files are cursors, the extension is also used for Italian tax certification files by the Agenzia delle Entrate or AED data log files by CU Medical Systems.
How to open CUR files?
On Windows, you can apply .CUR files directly in the system Mouse Properties settings. Image editing software like Inkscape, GIMP, and Adobe Photoshop can open and edit these cursor images. Because there are multiple possible meanings for this extension, viewer.online/cur analyzes .CUR files to identify their exact format and creator software. It shows which programs can open the file and usually previews it.
Best practices and troubleshooting
If you need to use a .CUR file on the web or in standard documents, you should convert it. We recommend converting .CUR files to standard image formats like .PNG or .JPG using convert.guru. If the file does not open as an image, viewer.online/cur can help identify if it is actually an Italian tax document or a medical log file instead of a standard Windows cursor.
Summary
viewer.online/cur directly opens and previews .CUR files in the browser, eliminating the need to install software or troubleshoot compatibility issues.