Thio's SVG Thumbnail Extension for Windows Explorer

A high-performance thumbnail provider for Windows that generates explorer thumbnails for .svg and .svgz files, written in Rust, with no third party dependencies.

Why Use This One?

  <b>No Third-Party Dependencies</b>
  
    Built using only official Microsoft-published Rust crates (found in the <a href="https://github.com/microsoft/windows-rs">windows‑rs</a> repo)
    
      ↳ No unknown code pulled in from an endless tree of dependencies
    
  


  <b>Renders Purely Via the Windows API</b>
  
    No separate third party library files that may go out of date or add overhead
  


  <b>Trusted Certificate Signed</b>
  
    Signed via Azure Trusted Signing, which requires rigorous verification of real-world identity.
    
      ↳ Proves it's not made by an unaccountable/unknown developer

Note: Also see current limitations section

Screenshot

How To Install

Option 1 (Easiest): Install With WinGet

Open command prompt and run this command, which will automatically download and run the installer.

winget install ThioJoe.SvgThumbnailExtension

Option 2: Download the Installer

Go to the Releases page.
For the latest release, look under Assets and download the .msi installer and run it.
Windows Explorer will now automatically use this provider to display thumbnails for .svg and .svgz files.

How To Uninstall:

It can be uninstalled like any other app in Windows' Installed Apps list

Current Limitations:

Currently, a small fraction of SVGs may render as black squares or as being filled completely black
- Such SVGs contain properties not supported by the Direct2D API which this extension uses
- There is also no support for text glyphs
Overall, a vast majority of SVGs should render correctly. If you notice any from a particular program that consistently don't render, you can create an issue and I can see if anything can be done.

How it works (Technical Details)

When Windows Explorer needs a thumbnail for a .svg file, it interacts with this DLL through a series of steps:

Initialization: Explorer provides the .svg file's data as a stream to the DLL. The provider reads this entire stream into memory.
SVG Data Pre-Processing:
- The API doesn't support CSS `

Thio's SVG Thumbnail Extension ThioJoe

README