by Erf Studio
Expression Library
A searchable, copy-ready collection of the After Effects expressions people use every day, grouped by what they do, each with a one-line explanation.
Runs entirely in your browser. Nothing is uploaded.
How to use
- Browse the expressions by category, or search for what you need like wiggle or loop.
- Read the one-line explanation so you know exactly what each one does.
- Press Copy on the expression you want.
- Alt-click a property's stopwatch in After Effects and paste.
Examples
- Search bounce to grab the keyframe-driven bounce expression for a logo that snaps in.
- The time category has ready snippets for continuous rotation, counters and delays.
- Linking expressions show how to drive properties from a Slider or Checkbox control.
Frequently asked questions
Do these work in any After Effects version?
These are standard expressions that have worked across recent versions. The legacy and JavaScript engines both run them, with only rare differences.
How do I paste an expression?
Hold Alt (Option on Mac) and click the stopwatch next to a property, then paste into the field that appears.
Is anything uploaded?
No. The library runs entirely in your browser.
