by Erf Studio
Expression Generator
Describe what you want in plain language, like wiggle, bounce or loop, and get the After Effects expression with an explanation, adjustable variables and a copy button.
Runs entirely in your browser. Nothing is uploaded.
How to use
- Pick what you want from the list, like wiggle, bounce, loop or fade in.
- Adjust the variables, such as frequency and amount, to taste.
- Read the explanation so you understand what the expression does.
- Copy it, then alt-click a property's stopwatch in After Effects and paste.
Examples
- Choosing wiggle with three wiggles per second and an amount of thirty gives a quick handheld shake on position.
- The bounce option adds a decaying overshoot after every keyframe, ideal for a logo that snaps into place.
- Fade in writes a linear opacity ramp between two times, so you do not even need keyframes.
Frequently asked questions
Where do I paste the expression?
Hold Alt (Option on Mac) and click the stopwatch next to the property you want to drive, then paste into the expression field that appears.
Do the variables update the code?
Yes. Every value you change is written straight into the expression, so what you copy is exactly what you set.
Is anything uploaded?
No. The whole tool runs in your browser and nothing leaves your device.
