WebM Quick Look Preview extension

The original free MacOS plugin to play .webm movies in Quick Look Preview, with no finder panel or background play inconveniences.

New Version 2.1 Download from Releases. - WebM QuickLook 2.1: auto-unloads.

Install

Launch the app once. This registers the extension as the extension itself stays within the app bundle.

Uninstall

Delete the app.

Update

Replace the older app with the newer app. MacOS looks for the extension in the app: if app is moved, a relaunch might be needed.

Works on all macOSX versions (Monterey to latest Sequoia) and all Silicon or Intel mac architectures.

Direct download (2.1 Universal Binary)

Tip

opt + space quicklooks in full-screen

Features

• detects as it should if the preview is in the Finder panel, the background or in QuickLook,
• introduces controls with the trackpad or the scroll wheel, configurable actions and sensitivity.
• scale-fits the video when resizing the preview above 100%.
• scale-fits the thumbnail in Finder, paused but playable if needed (e.g. gallery view.).
• properly pauses and resumes like a .mov or .mp4,
• has a new sample video.
• has low requirements (From macOS 15 Sequoia down to Monterey 12).
• ultra-lightweight, and doesn't run in the background.

Once the app is launched, the WebM Quicklook extension appears in Extensions from General in macOS' System Settings, and disapears if app is deleted.

Notarized and gatekeeper-approved, Universal Binary for Silicon and Intel architectures, with low osX requirement (Monterey), up to latest Sequoia.

Light and fast.

Screen.Recording.2025-03-19.at.11.54.34.PM.webm

Parametrized.

Check out QLCodec! QuickLook play everything! Repository.

Made in Swift.
a mac is a mac and it needs to stay comfortable, but it's still your mac.