CODEWITHSUNDEEP
javascriptjqueryhtmlcss
xcalliber
xcalliber

Reputation: 305

downloading image from website to desktop

Can someone please explain to me. Why my this code is not working? I have changed my code over and over and its hard to explain what is not working. So i finally put it in my website so I can show you what is going on. Here is where i found the code: convert div to single image with canvas-javascript css I use this an example because I'm trying to do the same thing. I changed the images so you can see on my site https://torcdesign.com/mom.php

var download = document.getElementById("download"),
		result = document.getElementById("result");

function renderContent() {
    html2canvas(document.getElementById("content"), {
        allowTaint: true
    }).then(function(canvas) {
    		result.appendChild(canvas);
        download.style.display = "inline";
    });
}

function downloadImage() {
		download.href = result.children[0].toDataURL("image/png");
}

document.getElementById("button").onclick = renderContent;
download.onclick = downloadImage
<style>
#content {
    position: absolute;
    width: 300px;
    height: 200px;
    border: 5px solid red;
    overflow: hidden;
}

#img1 {
    width: 300px;
    height: 200px;
    position: absolute;
    z-index: 5;
}

#img2 {
    position: absolute;
    z-index: 6;

    width: 150px;
    height: 190px;
}

#img3 {
    position: absolute;
    z-index: 7;
    width: 200px;
    height: 100px;
}

#download {
    display: none;
}
</style>
<script src="https://rawgit.com/niklasvh/html2canvas/master/dist/html2canvas.min.js"></script>

<div id="content">
    <img id="img1" src="https://torcdesign.com/shirts/brown.jpg">
    <img id="img2" src="https://torcdesign.com/shirts/kiwi.jpg">
    <img id="img3" src="https://torcdesign.com/shirts/lswhite.jpg">   
</div>
<br><br><br><br><br><br><br><br><br><br><br><br>
<input id="button" type="button" value="convert div to image"><br>
<h3>result:</h3>
<div id="result"></div>
<a id="download" download="my_image.png" href="#">Download image</a>

Upvotes: 0

Views: 485

Answers (1)

robere2
robere2

Reputation: 1716

After some digging, it looks like the issue is that your canvas is tainted, and you cannot export a tainted canvas. To make sure you canvas is not tainted, you cannot use cross-origin images. For example, I tried using a base-64 encoded image instead, and that one worked perfectly fine.

Upvotes: 1

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