Letterbox overlay generator
Create a transparent matte for your final canvas.
Choose the final canvas
Use exact output dimensions. The overlay and your video sequence should match.
Shape the frame
Choose Matte or Film, border weight and corner radius. Preview with a photo when useful.
Export transparent PNG
No photo is required for an overlay. The center stays transparent. Place the PNG above footage in your video editor; create the video there.
Output limits
Overlay dimensions: 240–8192px per edge, up to 32 megapixels. Photo composites retain the account export limit and never enlarge the source.