These .OPDOWNLOAD files are temporary files that contain partially downloaded data. The .opdownload file format was developed for the use of the Opera Web browser. This software creates an OPDOWNLOAD file each time it downloads a file from the Internet as requested by the user.Normally stored in the same directory of the local machine where the user chose to download the file from the Internet, these .opdownload files are deleted by the Opera Web browser from the local computer as soon as the file download has successfully completed. These .opdownload files are also generally classified as text files and binary files.The Opera Web browser can be used to open these .opdownload files. This software has versions for Windows, Mac OS X and Linux. It's best to leave these OPDOWNLOAD files alone, in order for associated file downloads that are initiated by the Opera Web browser to properly continue.
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