Adobe does not offer Keylight as a standalone download anymore, but it is bundled inside the “Adobe Exchange” or the “CS5 Content” disk.
Step-by-step to install Keylight 1.2:
If you don’t have the disk:
Download the “Adobe CS5 After Effects Content” from Adobe’s official archive (requires Adobe ID login): after effects cs5 plugin keylight 12 download install
If Keylight 1.2 is completely missing, you can copy it from a working Adobe installation.
For Windows 7 / 10 (CS5):
.aex file from a trusted source (rare – be careful of viruses).C:\Program Files\Adobe\Adobe After Effects CS5\Support Files\Plug-ins\EffectsKeylight.aex file inside the Keylight folder (or directly in Effects).For Mac OS X (Snow Leopard/Lion):
Applications/Adobe After Effects CS5/Plug-ins/Effects/Keylight.plugin bundle.⚠️ Warning: Do NOT download Keylight from random “free plugin” websites. Most contain malware. The only safe source is Adobe’s servers or a verified CS5 disk. The Complete Guide to Keylight 1
Since After Effects CS5 is 12+ years old and cannot run on modern macOS (Catalina and later) or fully support Windows 10/11, consider these options:
| Solution | Cost | Keylight Version | |----------|------|------------------| | After Effects 2025 (subscription) | Paid monthly/yearly | Keylight 2.0 (improved) | | DaVinci Resolve (built-in keyer) | Free | Ultra Keyer (excellent) | | HitFilm Express (built-in keyer) | Free | Composite Shot keyer | | The Foundry Keylight (standalone plugin) | Paid (~$400) | Latest version for AE 2020+ | Insert your Adobe CS5 Installation Disk (or open