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Foldout for Mac

Quick Look extension for previewing folder contents, size, file types, and project details.

By justadityaraj. Free and open source, MIT licence.

Get it with OpenDMG View source on GitHub

Foldout at a glance

Version
0.3.0
Released
22 October 2026
Download size
3.1 MB
Works on
Apple silicon and Intel
Licence
MIT
Category
System Tools
Developer
justadityaraj
GitHub stars
15

About Foldout

Folderglass: press Space on a folder in Finder to see its real size, file types, largest and recent files, git status and README. Free, open-source macOS Quick Look extension.

Screenshots

Foldout screenshot 1Foldout screenshot 2Foldout screenshot 3

How to install Foldout on a Mac

  1. Get OpenDMG. It is a free app store for open source Mac apps. Download OpenDMG.
  2. Search for Foldout and press Get. OpenDMG downloads version 0.3.0 from justadityaraj's own GitHub release.
  3. Open it. The download is checked against its SHA-256 fingerprint and its signature is checked on your Mac before it lands in Applications.

Updates to Foldout show up in OpenDMG and install with one button. No account is needed.

Prefer to do it by hand? The developer's file is on GitHub: Folderglass.dmg (3.1 MB).

What is new in Foldout 0.3.0

## Settings

Open Folderglass to find two new sections.

**Preview**
- **Show hidden files:** dotfiles and hidden items now count toward files, folders and the lists, not just the total size.
- **Open on tab:** start every preview on Contents, Largest, Recent, README or Images, or keep the automatic choice.
- **Stop counting after:** 5, 15 or 30 seconds for very big folders. A shorter limit puts less load on your Mac.
- **Count only the top level on network drives:** on by default, so pressing Space on a NAS folder doesn't crawl the whole share.

**General**
- **Check for updates when Folderglass opens**, plus a **Check for Updates** button. If you installed with Homebrew, it gives you the `brew upgrade folderglass` command instead of a download.
- **Reset Quick Look:** registers the extension again and clears Quick Look's cache. Use it when previews stop showing up.

## Privacy

The Quick Look extension still never uses the network. Only the app contacts GitHub to look for a newer version, when you open it or click Check for Updates, and you can turn that off.

## Install

**Download:** grab `Folderglass.dmg`, open it, drag Folderglass into Applications and open it once. Signed and notarized.

**Homebrew** (builds on your Mac):

```
brew install justadityaraj/tap/folderglass
```

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