HELP›KeyMark› How to install KeyMark KeyMark How to install KeyMark Updated 2026.09.28 This page is not available in English yet. **Requirements:** Windows with After Effects 2025 or 2026. (macOS hasn't been tested yet.) 1. Download **KeyMark-1.0.0.zxp** from your Gumroad purchase. The link is in your receipt email and in your Gumroad Library. 2. Install the free [ZXP Installer](https://aescripts.com/learn/zxp-installer/) from aescripts. 3. Quit After Effects. 4. Open ZXP Installer and drag **KeyMark-1.0.0.zxp** onto the window. 5. Once it tells you the install succeeded, open After Effects again. 6. Go to **Window > Extensions > KeyMark**. 7. Paste your license key and click Activate. ([Where do I find my license key?](/keymark/license-key)) **Not seeing KeyMark in the menu?** Restart After Effects, and make sure you're on version 2025 or later. Still stuck? Email [izuna.text@gmail.com](mailto:izuna.text@gmail.com) or DM us on [X](https://x.com/Izuna_text). More KeyMark help KeyMark Help Where do I find my license key? KeyMark on Mac (beta) KeyMark FAQ Help home
