.JPG_LARGE File Extension
Twitter Large JPEG Image
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What is a JPG_LARGE file?
A JPG_LARGE file is an image created when a Google Chrome user downloads a large-sized image from Twitter. It is saved in the standard JPEG format, but with a custom file extension. To open a JPG_LARGE file, change the extension to ".jpg," then open it as you would any .JPG file.
When you open a Twitter-hosted image in a new Chrome tab, the URL may look something like this:
If you download the image from the URL above, Chrome may save it with a JPG_LARGE file extension.
Despite using a different extension, JPG_LARGE files are normal JPEG files. Twitter appends the large attribute to the image URL, causing it to end with .jpg:large. When downloading the image, Chrome changes the colon to an underscore since filenames cannot contain colons. The result is a .jpg_large file.
Twitter may also create other image sizes with the corresponding extensions:
NOTE: Twitter now uses the following URL structure to prevent the creation of JPG_LARGE files: https://pbs.twimg.com/media/FIQbAtSX0AQ4Z7v?format=jpg&name=large
How to open a JPG_LARGE file
Some image viewers and web browsers, such as Adobe Photoshop and Google Chrome, can open files with a .jpg_large extension. If an image viewer does not recognize a JPG_LARGE file, first change the file extension from .jpg_large to .jpg, then open the file.