Why use this?
No distortion, ever
The image fits inside the target size at its natural ratio. Padding fills the gaps — your subject stays pixel-perfect, no squishing.
Blur pad looks pro
A zoomed blurred copy of your image fills the letterbox. It looks intentional and native on Instagram, LinkedIn and YouTube thumbnails.
Transparent PNG for editors
Choose Transparent + PNG to get a canvas-ready image with empty padding — drop it straight into Figma, Canva or Photoshop.
100% private
All processing runs in your browser via the Canvas API. Nothing is uploaded. Works offline once the page loads.