JPEGResample (resize a JPG)

function JPEGResample(
  imgFile:   string,
  maxWidth:  number,
  maxHeight: number,
  quality:   number
): boolean;

Resizes the specified JPEG image (imgFile) using the Lanczos3 resampling method for optimal detail.

• Maintains the original aspect ratio.
• Chooses the smaller of maxWidth or maxHeight (in pixels) as the limiting dimension. Set either to 0 to ignore that constraint.
• quality is a value from 1 to 100 (higher means better quality, less compression).

Returns true if the image was resized successfully, or false if an error occurred.

Example

JPEGResample('./self_portrait.jpg', 800, 600, 90);