What Is a JSX File?
A file with the JSXfile extensionis an ExtendScript script file.
JSX stands for JavaScript XML.

JSX files are used for writing plug-ins for software like Photoshop, InDesign, and After Effects.
The JSXBIN file extension is used when a JSX file is saved in binary.
This is also where these programs import JS and JSXBIN files.
Still Can’t Open It?
If you’re still having trouble, take a closer look at the file extension.
With most having only three letters, it’s actually pretty easy to confuse one for another.
Below are some examples of files that might appear related to JSX files, but actually aren’t.