Machine-Readable
Papa’s Best STL Thumbnails icon

Xcp-ng Ovf Work May 2026

A shell extension that adds preview thumbnails for STL files to Windows Explorer. Runs on Windows 7 or later.

Can also be used with Total Commander and FreeCommander.

Papa’s Best STL Thumbnails displaying a folder with random STLs from thingiverse

Download

Updated (changes, license).

Feel free to donate if you like my program!

64-bit Setup

recommended

32-bit Setup

for old systems

Video Guide

Michael from Teaching Tech made a video guide about the installation. He was so kind to allow me to embed it here! Thumbnail installation starts at 1:49.

Fast

Thumbnail generation is based on the fastest STL viewer available. Folders full of STL files are no problem, and most STL thumbnails are generated as fast as those of JPG photos.

Free

Compatible

Papa’s Best STL thumbnail viewer displays countless STL variations, even where other programs fail:

Custom colors

a folder with thumbnails, their background purple and the objects mint green

Custom object color is ignored if the STL comes with embedded color information! Changes do not take effect on existing thumbnails until you clear the Windows thumbnail cache! This is a Windows limitation.

Via Papa’s Best STL Viewer

  1. download and run my STL Viewer (if you don’t want to install it on your system, choose the portable version)
  2. from the menu, select an object color via ViewSelect Default Material …
  3. select a background color via ViewSelect Default Background …
  4. clear the Windows thumbnail cache

Via registry (for advanced users)

For automation and easy deployment, the color settings are loaded from the registry key HKEY_CURRENT_USER\SOFTWARE\Papa’s Best. Create values according to the following table. If a value is missing, its default is assumed.

Name Type Default Meaning
DefaultBackgroundColor DWORD 0x00000000 Background color for thumbnails. Format is 0xRRGGBBAA.
DefaultObjectColor DWORD 0xffffffff Object color for files without built-in color information. Format is 0xRRGGBBAA. Transparency is not supported.
InitialEyeYawDegrees DWORD 28 Horizontal rotation of the viewer, in degrees. Positive rotates right.
InitialEyePitchDegrees DWORD 331 Vertical rotation of the viewer, in degrees. Positive rotates down.

Installation for all users

Papa’s Best STL Thumbnails installs for the current user by default. To install for all users on a system, open a command prompt or a PowerShell and run msiexec /i "Papas Best STL Thumbnails.msi" MSIINSTALLPERUSER="".

Repeat with every update!

Xcp-ng Ovf Work May 2026

Importing OVF files into XCP-ng is a great way to migrate existing virtual machines to a new infrastructure or to deploy new VMs quickly and easily. With its support for OVF, XCP-ng provides a high degree of interoperability with other virtualization platforms, making it an attractive option for organizations looking to standardize on a single virtualization platform. By following the steps outlined in this article, you can easily import OVF files into XCP-ng and start managing your virtual machines with ease.

XCP-ng is an open-source, highly-performant, and feature-rich virtualization platform that allows users to manage and deploy virtual machines (VMs) with ease. One of the key benefits of using XCP-ng is its ability to import virtual machines from other virtualization platforms, making it an attractive option for organizations looking to migrate their existing VMs to a new infrastructure. In this article, we’ll focus on importing OVF (Open Virtualization Format) files into XCP-ng, a widely-used format for virtual machine deployment. xcp-ng ovf

Converting Virtual Machines to XCP-ng: A Guide to OVF Import** Importing OVF files into XCP-ng is a great

XCP-ng is a open-source virtualization platform that’s built on top of the Xen hypervisor. It’s designed to provide a high-performance, scalable, and secure way to manage virtual machines. XCP-ng offers a range of features, including support for multiple storage types, network configurations, and high-availability clustering. Converting Virtual Machines to XCP-ng: A Guide to

OVF is an open standard for packaging and distributing virtual machines. It’s a XML-based format that contains all the necessary information to deploy a virtual machine, including the VM’s configuration, disk images, and network settings. OVF files are widely supported by most virtualization platforms, making it easy to move VMs between different environments.


Dark background on some thumbnails

a folder with two thumbnails whose background is entirely black

Clear your Explorer thumbnail cache (see above) or copy the file to a different location.

This is a bug in Windows 10 that also affects other thumbnails – for example transparent PNG images here and here.

I can’t do anything in my program to work around it, I’m afraid. Please use the Windows 10 feedback function to report this to Microsoft. If enough users do it, they may eventually fix it. Windows 7 does not have this bug.


Something Missing?

Encountered a problem? Have a suggestion? Let me know: