Donovan Glover

thud

thud, short for thumbnail directory, is a tool that lets you generate directory thumbnails from images inside them. Useful for a Dolphin/KDE-like experience with GTK-based file browsers that don't show the contents of directories by default.

The source code is available on GitHub.

A screenshot of Nautilus with directory thumbnails.

Background

Images are a great way to make browsing through directories easier, especially when each directory holds specific content, such as a certain music album, video series, or other media.

With thud, any cover.jpg or cover.png you place in a directory will replace the default folder icon with a thumbnail of that image.

This makes it possible to browse through your directories visually.

Why thud?

  • Portability. Your folder icons are now part of the folders themselves, instead of hidden inside of GNOME's virtual file system. No effort from you is required to keep your folder icons.
  • Simplicity. Using a cover image is as simple as making sure that the directory has a cover.jpg or cover.png. No need to click through GUIs or deal with a database.
  • Ease of sharing. You can share folders without worrying about useless metadata files like desktop.ini. Any other user that uses thud will automatically see your cover images.
  • Progressive enhancement. You can use thud at your own pace, gradually adding cover images as you see fit.
  • Graceful degradation. Your files are exactly the same as they were with or without thud.
  • Multiuse. The same cover images can be used with other applications such as mpv (enabled by default) and media servers like Navidrome.

Trivia

thud was originally called go-thumbnailer and was written in Go. For a technical explanation on why it was rewritten in Rust, read Rewriting go-thumbnailer in Rust.

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