(PECL imagick 2, PECL imagick 3)

ImagickDraw::setFontSizeSets the font pointsize to use when annotating with text


public ImagickDraw::setFontSize(float $pointsize): bool

This function is currently not documented; only its argument list is available.

Sets the font pointsize to use when annotating with text.



the point size

Return Values

No value is returned.


Example #1 ImagickDraw::setFontSize() example

function setFontSize($fillColor, $strokeColor, $backgroundColor) {

$draw = new \ImagickDraw();


$sizes = [24, 36, 48, 60, 72];

foreach (
$sizes as $size) {
$draw->annotation(50, ($size * $size / 16), "Lorem Ipsum!");

$imagick = new \Imagick();
$imagick->newImage(500, 500, $backgroundColor);

header("Content-Type: image/png");


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User Contributed Notes 2 notes

hmkrox at gmail dot com
14 years ago
The font size taken in parameter is not the size in point (1 point = 1/72 inch) but the font's height in pixel.
Therefore you should do a conversion to have the correct font size if you want to modify a document destined to print.
For example, if your document's resolution is 300ppi, you should add a 25/6 multiplying factor to your fontsize in order to have a correct behaviour of the font.
jgsujith at in dot com
14 years ago
$textWrite='God is Great';
$colorPix=new ImagickPixel ($fontColor);
$image=new Imagick ($sourceFile);
$draw=new ImagickDraw();
$draw->setFontSize($fontSize);//Sets the font pointsize to use when annotating with text

$draw->setFillColor($colorPix);//Sets the fill color to be used for drawing filled objects
$image->annotateImage($draw,$x,$y,0,$textWrite);//Annotates an image with text

$image->writeImage('out.jpg');//Writes an image to the specified filename
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