RPGMVP Thumbnail Provider for Windows

A Windows Shell Extension that adds thumbnail preview support for .rpgmvp .png_ files — the encrypted PNG format used in RPG Maker MV and MZ.

View RPGMVP image thumbnails directly in Windows Explorer.

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Features

• Generates live thumbnail previews for .rpgmvp .png_files
• Uses standard COM thumbnail provider interface (IThumbnailProvider)

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Requirements

• Windows 10 or later (x64)
• Administrator privileges for registration
• RPGMVP files must be valid (with 16-byte PNG XOR header)

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Installation & Uninstallation

Download the RPGMVPThumbnailProvider.dll from Releases.

Register the thumbnail provider:

regsvr32 RPGMVPThumbnailProvider.dll

Or unregister to uninstall:

regsvr32 /u RPGMVPThumbnailProvider.dll

Then delete the DLL file manually if needed.

Limitations

Only .rpgmvp files following the standard encrypted PNG format are supported.

Corrupt or nonstandard RPGMVP files will not generate thumbnails.

No support for context menu preview or animated thumbnails.

Credits

• Decryption logic inspired by Petschko/RPG-Maker-MV-Decrypter