Machine-Readable
Papa’s Best STL Thumbnails icon

Jriver Media Center 30.0.82 | Portable -

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:

Jriver Media Center 30.0.82 | Portable -

: Includes a comprehensive Digital Signal Processing (DSP) studio for audio customization and a VideoClock for precise video sync. Portable Version & Installation

A "Portable" version allows the software to run from an external drive (like a USB stick) without a traditional local installation. JRiver Media Center 30.0.82 | Portable

JRiver Media Center 30.0.82 is a specific build of the JRiver Media Center multimedia application, a "jukebox"-style player designed to organize and play audio, video, images, and television. Key Features of JRiver Media Center 30 : Includes a comprehensive Digital Signal Processing (DSP)

: The software is offered as shareware with a 30-day free trial. A Master License ($124.98) covers all three operating systems. Release Context Need help setting up Portable Library for an external HD Key Features of JRiver Media Center 30 :

: Handles virtually all popular audio and video formats, including specialized types like SACD and high-resolution DSD.

: Users can set up "Portable Library" rules to ensure file paths are relative to the "Install Drive" rather than a static drive letter (e.g., M:\ ), which often changes between different computers.

: Features advanced tools for ripping CDs, burning discs, and managing vast libraries with custom fields.


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!

: Includes a comprehensive Digital Signal Processing (DSP) studio for audio customization and a VideoClock for precise video sync. Portable Version & Installation

A "Portable" version allows the software to run from an external drive (like a USB stick) without a traditional local installation.

JRiver Media Center 30.0.82 is a specific build of the JRiver Media Center multimedia application, a "jukebox"-style player designed to organize and play audio, video, images, and television. Key Features of JRiver Media Center 30

: The software is offered as shareware with a 30-day free trial. A Master License ($124.98) covers all three operating systems. Release Context Need help setting up Portable Library for an external HD

: Handles virtually all popular audio and video formats, including specialized types like SACD and high-resolution DSD.

: Users can set up "Portable Library" rules to ensure file paths are relative to the "Install Drive" rather than a static drive letter (e.g., M:\ ), which often changes between different computers.

: Features advanced tools for ripping CDs, burning discs, and managing vast libraries with custom fields.


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: