PropertySystemView is a free, lightweight utility created by NirSoft that allows you to view and modify the internal metadata properties of files and windows using the native Windows Property System. While Windows lets you view some metadata in File Explorer, it often marks vital fields as read-only or hides them entirely. PropertySystemView bypasses these interface restrictions.
You can read more about its features or download it directly from the NirSoft PropertySystemView Official Page. Key Features
File Metadata Modification: Change hidden or protected timestamps like the “Media Created” tag (System.Media.DateEncoded) in MP4 files, EXIF data in JPG photos, or “Last Saved Date” and “Authors” in office documents.
Window Property Management: Manipulate active operating system windows. For example, you can add the System.AppUserModel.ID property to a specific window to disable automatic taskbar grouping.
System-Wide Property Auditing: View every single property handler definition registered on your specific Windows operating system.
Dual Interface Control: Control your metadata via a standard graphical user interface (GUI) or automate changes using command-line arguments. How to Use the Utility Viewing and Editing File Properties Open PropertySystemView.
Drag and drop any file from Windows Explorer into the tool’s main interface.
Scroll through the populated list of attributes (e.g., Canonical Name, Formatted Value, Property Key).
Double-click any property that isn’t hard-locked by the OS kernel to change its value. Managing Window Properties
Click and hold the Target Icon located on the utility’s toolbar.
Drag the cursor over the open application window you want to target, then release.
Press Ctrl + N to inject a completely new property into that active window. Display Data Breakdown
When you load an item, the tool organizes metadata across 11 detailed columns, including:
Canonical Name: The system-level variable identifier (e.g., System.Title).
Formatted Value: The human-readable string displayed in standard Windows menus.
Raw Value: The underlying data structure as processed by the Windows API. Property Key: The exact internal GUID used by the registry.
If you want to automate this tool for a large batch of files, let me know. I can show you how to write command-line scripts or batch files using this utility. AI responses may include mistakes. Learn more
Property System Viewer For Windows 10 / 8 / 7 / Vista – NirSoft
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