Machine-Readable
Papa’s Best STL Thumbnails icon

Kmplayer X64 -

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:

Kmplayer X64 -

He double-clicked VOID.COD . The dark window flickered. For a second, the interface glitched, showing a language no human had ever written. Then, the video began.

He didn't delete the player.

The output wasn't text. It was a set of coordinates. They pointed to a location two blocks from his apartment. kmplayer x64

To anyone else, it was just a media player. A powerful one, sure, with codecs for everything from .avif to .zvi. But to Elias, it was the Monstrum . The Beast. The only tool that could play the unplayable. He double-clicked VOID

His phone rang. Silas’s voice was flat, processed. "You found the key." the interface glitched


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!

He double-clicked VOID.COD . The dark window flickered. For a second, the interface glitched, showing a language no human had ever written. Then, the video began.

He didn't delete the player.

The output wasn't text. It was a set of coordinates. They pointed to a location two blocks from his apartment.

To anyone else, it was just a media player. A powerful one, sure, with codecs for everything from .avif to .zvi. But to Elias, it was the Monstrum . The Beast. The only tool that could play the unplayable.

His phone rang. Silas’s voice was flat, processed. "You found the key."


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: