Convert Image into base64 String
This example is how to turn an image into a Base64 string (i.e. a string you can use directly in a
src attribute of an
img tag). This example specifically uses the Imagick library (there are others available, such as GD as well).
<?php /** * This loads in the file, image.jpg for manipulation. * The filename path is releative to the .php file containing this code, so * in this example, image.jpg should live in the same directory as our script. */ $img = new Imagick('image.jpg'); /** * This resizes the image, to the given size in the form of width, height. * If you want to change the resolution of the image, rather than the size * then $img->resampleimage(320, 240) would be the right function to use. * * Note that for the second parameter, you can set it to 0 to maintain the * aspect ratio of the original image. */ $img->resizeImage(320, 240); /** * This returns the unencoded string representation of the image */ $imgBuff = $img->getimageblob(); /** * This clears the image.jpg resource from our $img object and destroys the * object. Thus, freeing the system resources allocated for doing our image * manipulation. */ $img->clear(); /** * This creates the base64 encoded version of our unencoded string from * earlier. It is then output as an image to the page. * * Note, that in the src attribute, the image/jpeg part may change based on * the image type you're using (i.e. png, jpg etc). */ $img = base64_encode($imgBuff); echo "<img alt='Embedded Image' src='data:image/jpeg;base64,$img' />";
Using apt on Debian based systems
Using Homebrew on OSX/macOs
To see the dependencies installed using the
brew method, visit brewformulas.org/Imagemagick.
Using binary releases
Instructions on imagemagick website.