How do I figure out the file type (document type / UTI) of a file...

NSItemProvider loadItemForTypeIdentifier:options:completionHandler: for any kind of (binary) file...

The curious case of Plain text files with non .txt extension seen with Quicklook...

iOS: error when sending application-specific file to Dropbox using UIDocumentInteractionController...

What are "Imported UTIs" in Xcode 4?...

Get file type of given file - based on contents...

App not showing up in "Open With" menu for supported document type...

what is the uniform type identifier for docx file...

iOS: Registering for dynamic UTIs...

How can I make my app appear in UIActivityViewController for text?...

Objective-C: enable "Open in..." on special condition...

Check to see if a proposed file extension is valid/registered file extension on a system...

How do you get the Finder "Kind" for a file?...

iOS7 Custom UTI...

Does Cocoa (AppKit) provide constants for standard UTIs?...

How to tell (programmatically) if there are / are not any registered apps that support opening a spe...

Open in... for custom file type works in iOS 5, 6 & 7 but not iOS 4...

Phonegap / iPad -- UTI's - Doc types... what to do with incoming URL...

How to define a Uniform Type Identifier in a plist file?...

Get GMT Time in Milliseconds using JAVA...

Handle every possible UTI in an OS X application...

Are dynamic UTIs stable?...

Finder doesn't recognize custom UTI...

CIFilterGenerator filename extension...

Issues with email attachment, PDF and CSV...

How to ensure that my app never comes up as the default for "Open In..."...

Handle files with content...

Overlapping UTI declarations for same file extension...

iOS Document/File type associations - wildcard UTI?...

stringWithContentsOfURL returning all attached files as NSString...