Glimmerglass
The House of Koco v1.0.0
Transparent animation for web
From the developer
Declared capabilities
- Explain transparent video on the web
- Convert animations to .glim
- Preview animations and playback settings
Cost & access
This plugin does not sell anything or process payments. Converting requires signing in with an existing Glimmerglass license, purchased outside ChatGPT.
Declared limitations
- Removing a background
- Creating animation
- Ordinary video
Onboarding example
Why does my transparent animation show a black box in Safari?
Sources & dates
Developer declarations; not independently tested. Listing last checked Nov 13, 2026. Package observed Nov 13, 2026.
Description
From the marketplace listing
Glimmerglass prepares an animation you already made for the web with transparency, in the two video formats browsers use: HEVC with alpha for Safari and iPhone, and VP9 with alpha for Chrome, Edge and Firefox. The wrong one can play on a black box or with grey edges. Ask why your transparent animation is not working to get an explanation. Bring your own animated WebP, GIF, APNG, MOV, MP4 or WebM with transparency, and Glimmerglass converts it into one .glim file with several sizes, plays it in the chat over the background you choose, and hands you the file, its poster and the code to paste. Play always, on hover or in view, speed, looping, fit and more are saved in the file. You can try the sample animations right away. Converting your own files needs signing in with an existing Glimmerglass license. Glimmerglass does not create animation or remove backgrounds.
Language: English · Automatically detected from descriptions.
Changes
No changes recorded yet. Follow this plugin to keep track of future changes.
First seen Nov 13, 2026. Last seen Nov 13, 2026.
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Keywords
Files & skills
File archives
Skill instructions
get-started760 Bytes
--- name: get-started description: Use when someone wants to put a transparent animation on a website, or asks why one shows a black box or grey edges in a browser. --- # Get started with Glimmerglass 1. If they ask why it goes wrong or what to do, call `get_transparent_animation_help` and answer from it. 2. If they want to see it working, call `show_animation` with a sample from `list_animations`. 3. If they have a file, call `convert_animation` with it. The first time, they sign in on a Glimmerglass page. Never ask for a license key in chat. 4. When it is done, give them the links and the embed code. Pass a Playback setting only when they ask for it. Glimmerglass does not create animation or remove backgrounds. Say so if that is what they need.
Release notes
Initial release: answers why transparent animation goes wrong on the web, converts your animation to a .glim, previews it with its Playback settings, and provides the file and embed code.
Declared in the saved package. Remote tools may change independently.
Package details
Publisher declarations from the archived package. These are separate from our research and the live service's terms.
- Package author
- The House of Koco
- Keywords
- See keywords
- Getting started skill
- ./skills/get-started/SKILL.md
- Commerce declaration
- Does not support commerceThis does not establish whether access is free or paid.
- Review scenarios
- 5 positive · 3 negativeScenario counts, not test results.
Declared capabilities
- Explain transparent video on the web
- Convert animations to .glim
- Preview animations and playback settings
- Provide files and embed code
Package observed Nov 13, 2026.
Technical details
- First seen
- Nov 13, 2026 · 18:00 UTC
- Last seen
- Nov 13, 2026 · 18:00 UTC
- Collection status
- Collected
plugin_asdk_app_6ae4bd02ffc88191804b33738f516ebd
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