Spoiler Guard

Firefox extension that hides spoilers on Twitch and YouTube VODs.

What it hides

• Video thumbnails (home, search, sidebar, VOD pages)
• Duration labels on thumbnails
• Player time display and progress bar
• Seek preview tooltips
• Recommended/related videos
• YouTube end screen and comments
• Twitch front-page carousel

What it adds

• Custom relative seek slider (-1h to +1h) with non-linear scale (fine control near center)
• Storyboard preview thumbnails while seeking (both Twitch and YouTube)
• Toolbar button to toggle on/off

Install

Download the latest signed .xpi from Releases and open it in Firefox.

Auto-updates are enabled.

Release

1. Bump version in manifest.json
2. Commit and tag: git tag v<version>
3. Push: git push origin master --tags

GitHub Actions signs the extension on AMO, creates a release with the .xpi, and updates updates.json for auto-update.