Untitled

<html>
<body>
    <div id="rte" contenteditable="true" style="height: 100%; width: 100%; outline: 0; overflow: auto"></div>
    <script type="text/javascript">
        document.getElementById("rte").focus();
        document.body.addEventListener("paste", function(e) {
            for (var i = 0; i < e.clipboardData.items.length; i++) {
                if (e.clipboardData.items[i].kind == "file" && e.clipboardData.items[i].type == "image/png") {
                    // get the blob
                    var imageFile = e.clipboardData.items[i].getAsFile();

                    // read the blob as a data URL
                    var fileReader = new FileReader();
                    fileReader.onloadend = function(e) {
                        // create an image
                        var image = document.createElement("IMG");
                        image.src = this.result;

                        // insert the image
                        var range = window.getSelection().getRangeAt(0);
                        range.insertNode(image);
                        range.collapse(false);

                        // set the selection to after the image
                        var selection = window.getSelection();
                        selection.removeAllRanges();
                        selection.addRange(range);
                    };

                    // TODO: Error Handling!
                    // fileReader.onerror = ...

                    fileReader.readAsDataURL(imageFile);

                    // prevent the default paste action
                    e.preventDefault();

                    // only paste 1 image at a time
                    break;
                }
            }
        });
    </script>
</body>