How can I reliably determine if a file is an image file?
88720
Script to determine if files are Images
106594
How can we check if a file Exists or not using Win32 program?
3531
Determine if uploaded file is image (any format) on MVC
78070
Turn a string into a valid filename?
5175
Is there a way to programmatically determine if a font file has a specific Unicode Glyph?
116201
How can I detect if a file is binary (non-text) in Python?
17649
Is there a way to check if a file is in use?
9245
How can I identify duplicate image files?
10065
How to automate generation of image files?
122237
How to test if a bitmap file has a transparent background?
20861
Image file copy, is being used by another process
131618
Is there a tool to check the file integrity of a series of images?
99842
Check if images are loaded?
129041
How can I test programmatically if a path/file is a shortcut?
39922
Validation of files based on their file extensions
121855
Best way to determine if two path reference to same file in Windows?
35245
How do I check if file exists in jQuery or pure JavaScript?