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Editorial Team
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Asked: 2026-06-06T02:51:33+00:00

Can please someone explain to me or bring me on the way how to

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Can please someone explain to me or bring me on the way how to crop a picture with JavaScript / jQuery?
I’m not looking for a plugin, I want to understand how it is done and use it.
I also don’t want div manipulations with background positions.
I want to crop the actual picture. But only for client side purposes. I don’t need a hook to the back end to save the cropped picture.

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1 Answer

  1. Editorial Team

    jQuery has no picture cropping functionality.

    You could for example use the HTML5 canvas element to achieve that. Here’s a tutorial:

    <!DOCTYPE HTML>
<html>
  <head>
    <style>
      body {
        margin: 0px;
        padding: 0px;
      }
      #myCanvas {
        border: 1px solid #9C9898;
      }
    </style>
    <script>
      window.onload = function() {
        var canvas = document.getElementById("myCanvas");
        var context = canvas.getContext("2d");
        var imageObj = new Image();

        imageObj.onload = function() {
          // draw cropped image
          var sourceX = 150;
          var sourceY = 0;
          var sourceWidth = 150;
          var sourceHeight = 150;
          var destWidth = sourceWidth;
          var destHeight = sourceHeight;
          var destX = canvas.width / 2 - destWidth / 2;
          var destY = canvas.height / 2 - destHeight / 2;

          context.drawImage(imageObj, sourceX, sourceY, sourceWidth, sourceHeight, destX, destY, destWidth, destHeight);
        };
        imageObj.src = "http://www.html5canvastutorials.com/demos/assets/darth-vader.jpg";
      };

    </script>
  </head>
  <body>
    <canvas id="myCanvas" width="578" height="400"></canvas>
  </body>
</html>
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