Using setSize before reading an image file tells ImageMagick to resize the image immediately on load - this can give a substantial increase in performance time and save memory and disk resources for large images:
$image = new Imagick();
This might also save you having to call thumbnailImage to resize the image.
On my server, this only made a difference with jpgs - pngs and gifs were loaded at full size which took much longer (30s or more compared to 6s for a similar sized jpg).
(PECL imagick 2.0.0)
Imagick::setSize — Sets the size of the Imagick object
bool Imagick::setSize ( int
Sets the size of the Imagick object. Set it before you read a raw image format such as RGB, GRAY, or CMYK.
TRUE on success.
add a note User Contributed Notes Imagick::setSize - [1 notes]
Mike Pratt ¶
7 months ago