• Adobe After Effects Expressions

  ow to keep text fixed at the bottom with an automatic offset

  Posted by Paul Wessa on October 15, 2025 at 10:32 pm

  Hey everyone,

  I’m using the following After Effects expression:

  var rect = thisLayer.sourceRectAtTime(time, false); var pos = transform.position; var offset = 20; pos - [0, rect.height - offset];

  It works, but I’d like the text to stay fixed at the bottom no matter what characters are used — uppercase, lowercase, umlauts, or special symbols — and I’d like the offset to adjust automatically (so I don’t have to set it manually).

  Right now, the position still changes slightly depending on the text content. Does anyone know how to modify the expression so the text baseline always stays perfectly fixed at the bottom with an automatic offset?

  Thanks in advance

  Adam Greenberg replied 6 months, 2 weeks ago 2 Members · 1 Reply
• 1 Reply

• 

  Adam Greenberg

  October 28, 2025 at 4:37 pm

  remove your expressiom, and try this on anchor point;

  posterizeTime(0);

  function getNumRows(myLeading, myFontSize, height) {

  H = height – myFontSize * 0.5;

  return Math.floor(H / myLeading);

  }

  H = sourceRectAtTime(time, false).height;

  var myStyle = text.sourceText.style;

  myFontSize = myStyle.fontSize;

  myLeading = myStyle.autoLeading ? myFontSize * 1.15 : myStyle.leading;

  numRows = getNumRows(myLeading, myFontSize, H);

  S = scale[1] * 0.01;

  value + [0, numRows * myLeading * S];

Reply to this Discussion! Login or Sign Up