ShowglassPress kit
Everything here may be used to write about Showglass. Images are real output of the Showglass renderer, drawn from sample files our own scripts generate.
Fact sheet
| Product | Showglass |
|---|---|
| App Store name | Showglass: File Previews |
| What it is | A Quick Look preview extension and a Finder thumbnail extension for macOS, with an app that holds a format gallery, a “Can Showglass open…?” search, themes and settings |
| Maker | VPO Labs |
| Platform | macOS 26 or later, Apple silicon and Intel |
| Version at launch | 1.0 |
| Availability | Coming soon to the Mac App Store |
| Price | Free download. Showglass Pro is an in-app purchase: you pay once. No subscription, no ads, no account. |
| Language | English |
| Category | Utilities |
| File types | 83 types in 13 families: code and config, Markdown and docs, data, notebooks, archives, fonts, 3D, developer artifacts, images and design files, media metadata, books and comics, geo, folders |
| Free | Code and config (23 types), Markdown and docs (6), JSON5 and JSONC, the source view of JSON, every feature of the app |
| Pro | The rich views for data, notebooks, archives, fonts, 3D, images and design files, media, books, maps and folders, plus five extra colour themes |
| Finder thumbnails | Drawn by Showglass for 15 types: ZIP, TAR, gzip, bzip2, xz, 7-Zip, JAR and WAR, IPA, YAML, TOML, INI, CSS, WebVTT, NDJSON and .strings. macOS draws every other thumbnail. |
| Privacy | Your files never leave your Mac. The Quick Look extensions have no network access. The app sends anonymous usage counts and crash reports (crash reports only with your permission), which you can turn off in Settings. The website has no cookies or analytics. Previews never execute or extract anything, and never load remote content. |
| Not supported | Types macOS keeps for itself: plain text, RTF, HTML, SVG, images, PDF, CSV, Office, OpenDocument, iWork, contacts, calendars, STL, OBJ and PLY. The full list |
| How it was made | Built by VPO Labs with AI agents (Anthropic's Claude) under human direction. It contains no AI at runtime. |
Boilerplate
Short
Showglass adds designed Quick Look previews for code, Markdown, data, archives, fonts, 3D models and more to macOS. Free to start, private by design, from VPO Labs.
Standard
Showglass is a Quick Look preview extension for macOS from VPO Labs. Select a file in Finder, press Space, and see a preview built for that kind of file: highlighted code with an outline, Markdown set like a document, JSON as a tree, tables for TSV and SQLite, file trees for archives, specimens and glyph grids for fonts, and orbitable 3D models. It covers 83 file types in 13 families in one design system, and your files never leave your Mac. Showglass is a free download; Showglass Pro, an in-app purchase, turns on the richer views. It requires macOS 26 or later.
Disclosure
Showglass was built by VPO Labs with AI agents (Claude) doing the engineering under human direction.
Images
Showglass previews, light appearance, at full size. Describe them as Showglass previews, not as screenshots of Finder. Select an image to download the PNG.
A ZIP, listed and sized, never extracted. 
A variable font with its axes and coverage. 
Drag to orbit, with real dimensions. 
Code with a symbol outline. 
JSON as a tree, with the path ready to copy. 
The app: every type, who previews it, what is free.
App icon
Showglass icon, PNG, 1024 × 1024 (288 kB). Don't alter the icon or place it inside Apple artwork.
Naming and use
- Write “Showglass”. On the App Store the full name is “Showglass: File Previews”.
- Describe it as “a Quick Look preview extension”. Quick Look is a trademark of Apple Inc.; Showglass is not affiliated with or endorsed by Apple.
- Showglass was built with AI, and contains no AI at runtime. Please don't call it an AI app.
- Please don't claim “every file”, search inside previews, playback, editing or speed figures. None of them apply.
Contact
Write to support@vpolabs.com with “Press” in the subject. For help with the app, see the support page.