In windows, we can check the type filter easily:
But in MacOS, it seems the file open dialog has no such thing:
The reason why I want to check it: sometimes the open button is unclickable, but I don't know the file type it is looking for.
File Open Dialog – How to Check Type Filter
dialogfilesystemfinderhigh sierramojave
Related Question
- MacOS – Where did the open file dialog go
- MacOS – Permanently Enlarging the “Open File” dialog box in Yosemite
- How to Open a File Using AppleScript
- Specify File Type in Open File Dialog with Pattern
- macOS TextEdit – Prevent Unnecessary ‘File Changed’ Dialog
- macOS Catalina – Save Dialog Lacks Filter/Search Options
- Finder – How to Change File Picker Dialog Folder Location
Best Answer
The granddaddy of macOS modifications DefaultFolderX that has been around since "classic" Mac OS does not even offer this option. Making me think that is not something that is available.
And after 20+ years working on Macs I have not seen anything like that I would generally think that there is no mechanism available to end-users that allows you to do this.
It may be possible to add certain apps to the database of programs that can open a particular file but that is usually done by an App when it is installed.
I would say that you are likely out of luck in situations like this.
However I have been known to drag 'n drop a file onto a program icon that will open pretty much any file (I'm lookin' at you BBEdit) and that, I have found, is a useful workaround, at least for me.