Force browser to download image files on click
JavascriptJqueryHtmlJavascript Problem Overview
I need the browser to download the image files just as it does while clicking on an Excel sheet.
Is there a way to do this using client-side programming only?
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<script type="text/javascript" src="Scripts/jquery-1.10.2.js">
$(document).ready(function () {
$("*").click(function () {
$("p").hide();
});
});
</script>
</head>
<script type="text/javascript">
document.onclick = function (e) {
e = e || window.event;
var element = e.target || e.srcElement;
if (element.innerHTML == "Image") {
//someFunction(element.href);
var name = element.nameProp;
var address = element.href;
saveImageAs1(element.nameProp, element.href);
return false; // Prevent default action and stop event propagation
}
else
return true;
};
function saveImageAs1(name, adress) {
if (confirm('you wanna save this image?')) {
window.win = open(adress);
//response.redirect("~/testpage.html");
setTimeout('win.document.execCommand("SaveAs")', 100);
setTimeout('win.close()', 500);
}
}
</script>
<body>
<form id="form1" runat="server">
<div>
<p>
<a href="http://localhost:55298/SaveImage/demo/Sample2.xlsx" target="_blank">Excel</a><br />
<a href="http://localhost:55298/SaveImage/demo/abc.jpg" id="abc">Image</a>
</p>
</div>
</form>
</body>
</html>
How should it work in case of downloading an Excel sheet (what browsers do)?
Javascript Solutions
Solution 1 - Javascript
Using HTML5 you can add the attribute 'download' to your links.
<a href="/path/to/image.png" download>
Compliant browsers will then prompt to download the image with the same file name (in this example image.png).
If you specify a value for this attribute, then that will become the new filename:
<a href="/path/to/image.png" download="AwesomeImage.png">
UPDATE: As of spring 2018 this is no longer possible for cross-origin hrefs. So if you want to create <a href="https://i.imgur.com/IskAzqA.jpg" download> on a domain other than imgur.com it will not work as intended. Chrome deprecations and removals announcement
Solution 2 - Javascript
I managed to get this working in Chrome and Firefox too by appending a link to the to document.
var link = document.createElement('a');
link.href = 'images.jpg';
link.download = 'Download.jpg';
document.body.appendChild(link);
link.click();
document.body.removeChild(link);
Solution 3 - Javascript
> Leeroy & Richard Parnaby-King: > > UPDATE: As of spring 2018 this is no longer possible for cross-origin > hrefs. So if you want to create on a domain other than imgur.com it > will not work as intended. Chrome deprecations and removals > announcement
function forceDownload(url, fileName){
var xhr = new XMLHttpRequest();
xhr.open("GET", url, true);
xhr.responseType = "blob";
xhr.onload = function(){
var urlCreator = window.URL || window.webkitURL;
var imageUrl = urlCreator.createObjectURL(this.response);
var tag = document.createElement('a');
tag.href = imageUrl;
tag.download = fileName;
document.body.appendChild(tag);
tag.click();
document.body.removeChild(tag);
}
xhr.send();
}
Solution 4 - Javascript
A more modern approach using Promise and async/await :
toDataURL(url) {
return fetch(url).then((response) => {
return response.blob();
}).then(blob => {
return URL.createObjectURL(blob);
});
}
then
async download() {
const a = document.createElement("a");
a.href = await toDataURL("https://cdn1.iconfinder.com/data/icons/ninja-things-1/1772/ninja-simple-512.png");
a.download = "myImage.png";
document.body.appendChild(a);
a.click();
document.body.removeChild(a);
}
Find documentation here: https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API/Using_Fetch
Solution 5 - Javascript
Update Spring 2018
<a href="/path/to/image.jpg" download="FileName.jpg">
While this is still supported, as of February 2018 chrome disabled this feature for cross-origin downloading meaning this will only work if the file is located on the same domain name.
I figured out a workaround for downloading cross domain images after Chrome's new update which disabled cross domain downloading. You could modify this into a function to suit your needs. You might be able to get the image mime-type (jpeg,png,gif,etc) with some more research if you needed to. There may be a way to do something similar to this with videos as well. Hope this helps someone!
> Leeroy & Richard Parnaby-King: > > UPDATE: As of spring 2018 this is no longer possible for cross-origin > > hrefs. So if you want to create > href="https://i.imgur.com/IskAzqA.jpg" download> on a domain other > > than imgur.com it will not work as intended. Chrome deprecations and > > removals announcement
var image = new Image();
image.crossOrigin = "anonymous";
image.src = "https://is3-ssl.mzstatic.com/image/thumb/Music62/v4/4b/f6/a2/4bf6a267-5a59-be4f-6947-d803849c6a7d/source/200x200bb.jpg";
// get file name - you might need to modify this if your image url doesn't contain a file extension otherwise you can set the file name manually
var fileName = image.src.split(/(\\|\/)/g).pop();
image.onload = function () {
var canvas = document.createElement('canvas');
canvas.width = this.naturalWidth; // or 'width' if you want a special/scaled size
canvas.height = this.naturalHeight; // or 'height' if you want a special/scaled size
canvas.getContext('2d').drawImage(this, 0, 0);
var blob;
// ... get as Data URI
if (image.src.indexOf(".jpg") > -1) {
blob = canvas.toDataURL("image/jpeg");
} else if (image.src.indexOf(".png") > -1) {
blob = canvas.toDataURL("image/png");
} else if (image.src.indexOf(".gif") > -1) {
blob = canvas.toDataURL("image/gif");
} else {
blob = canvas.toDataURL("image/png");
}
$("body").html("<b>Click image to download.</b><br><a download='" + fileName + "' href='" + blob + "'><img src='" + blob + "'/></a>");
};
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
Solution 6 - Javascript
var pom = document.createElement('a');
pom.setAttribute('href', 'data:application/octet-stream,' + encodeURIComponent(text));
pom.setAttribute('download', filename);
pom.style.display = 'none';
document.body.appendChild(pom);
pom.click();
document.body.removeChild(pom);
Solution 7 - Javascript
This is a general solution to your problem. But there is one very important part that the file extension should match your encoding. And of course, that content parameter of downlowadImage function should be base64 encoded string of your image.
const clearUrl = url => url.replace(/^data:image\/\w+;base64,/, '');
const downloadImage = (name, content, type) => {
var link = document.createElement('a');
link.style = 'position: fixed; left -10000px;';
link.href = `data:application/octet-stream;base64,${encodeURIComponent(content)}`;
link.download = /\.\w+/.test(name) ? name : `${name}.${type}`;
document.body.appendChild(link);
link.click();
document.body.removeChild(link);
}
['png', 'jpg', 'gif'].forEach(type => {
var download = document.querySelector(`#${type}`);
download.addEventListener('click', function() {
var img = document.querySelector('#img');
downloadImage('myImage', clearUrl(img.src), type);
});
});
a gif image: <image id="img" src="data:image/gif;base64,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" />
<button id="png">Download PNG</button>
<button id="jpg">Download JPG</button>
<button id="gif">Download GIF</button>
Solution 8 - Javascript
Create a function that recibe the image url and file name and call the funcion using a button.
function downloadImage(url, name){
fetch(url)
.then(resp => resp.blob())
.then(blob => {
const url = window.URL.createObjectURL(blob);
const a = document.createElement('a');
a.style.display = 'none';
a.href = url;
// the filename you want
a.download = name;
document.body.appendChild(a);
a.click();
window.URL.revokeObjectURL(url);
})
.catch(() => alert('An error sorry'));
}
<button onclick="downloadImage('https://upload.wikimedia.org/wikipedia/commons/thumb/0/02/Stack_Overflow_logo.svg/1280px-Stack_Overflow_logo.svg.png', 'LogoStackOverflow.png')" >DOWNLOAD</button>
Solution 9 - Javascript
You can directly download this file using anchor tag without much code.
Copy the snippet and paste in your text-editor and try it...!
<html>
<head>
</head>
<body>
<div>
<img src="https://upload.wikimedia.org/wikipedia/commons/1/1f/SMirC-thumbsup.svg" width="200" height="200">
<a href="#" download="https://upload.wikimedia.org/wikipedia/commons/1/1f/SMirC-thumbsup.svg"> Download Image </a>
</div>
</body>
</html>
Solution 10 - Javascript
In 2020 I use Blob to make local copy of image, which browser will download as a file. You can test it on this site.
(function(global) {
const next = () => document.querySelector('.search-pagination__button-text').click();
const uuid = () => Math.random().toString(36).substring(7);
const toBlob = (src) => new Promise((res) => {
const img = document.createElement('img');
const c = document.createElement("canvas");
const ctx = c.getContext("2d");
img.onload = ({target}) => {
c.width = target.naturalWidth;
c.height = target.naturalHeight;
ctx.drawImage(target, 0, 0);
c.toBlob((b) => res(b), "image/jpeg", 0.75);
};
img.crossOrigin = "";
img.src = src;
});
const save = (blob, name = 'image.png') => {
const a = document.createElement("a");
a.href = URL.createObjectURL(blob);
a.target = '_blank';
a.download = name;
a.click();
};
global.download = () => document.querySelectorAll('.search-content__gallery-results figure > img[src]').forEach(async ({src}) => save(await toBlob(src), `${uuid()}.png`));
global.next = () => next();
})(window);
Solution 11 - Javascript
Try this:
<a class="button" href="http://www.glamquotes.com/wp-content/uploads/2011/11/smile.jpg" download="smile.jpg">Download image</a>
Solution 12 - Javascript
<html>
<head>
<script type="text/javascript">
function prepHref(linkElement) {
var myDiv = document.getElementById('Div_contain_image');
var myImage = myDiv.children[0];
linkElement.href = myImage.src;
}
</script>
</head>
<body>
<div id="Div_contain_image"><img src="YourImage.jpg" alt='MyImage'></div>
<a href="#" onclick="prepHref(this)" download>Click here to download image</a>
</body>
</html>
Solution 13 - Javascript
You can do
const urls = ['image.png', 'image1.png'];
urls.forEach((url) => {
window.open(url, "_blank");
});
Solution 14 - Javascript
// Pass desired URL as a param
function saveAs(uri) {
fetch(uri)
.then(res => res.blob()) // Gets the response and returns it as a blob
.then(blob => {
// Here, I use it to make an image appear on the page
let objectURL = URL.createObjectURL(blob);
let myImage = new Image();
myImage.href = blob;
myImage.download = generateFileName();
//Firefox requires the link to be in the body
document.body.appendChild(myImage);
//simulate click
myImage.click();
//remove the link when done
document.body.removeChild(myImage);
});
}
// Generate filenames for the image which is to be downloaded
function generateFileName() {
return `img${Math.floor(Math.random() * 90000) + 10000}`;
}
Solution 15 - Javascript
I found that
<a href="link/to/My_Image_File.jpeg" download>Download Image File</a>
did not work for me. I'm not sure why.
I have found that you can include a ?download=true parameter at the end of your link to force a download. I think I noticed this technique being used by Google Drive.
In your link, include ?download=true at the end of your href.
You can also use this technique to set the filename at the same time.
In your link, include ?download=true&filename=My_Image_File.jpeg at the end of your href.
Solution 16 - Javascript
What about using the .click() function and the tag?
(Compressed version)
<a id="downloadtag" href="examplefolder/testfile.txt" hidden download></a>
<button onclick="document.getElementById('downloadtag').click()">Download</button>
Now you can trigger it with js. It also doesn't open, as other examples, image and text files!
(js-function version)
function download(){
document.getElementById('downloadtag').click();
}
<!-- HTML -->
<button onclick="download()">Download</button>
<a id="downloadtag" href="coolimages/awsome.png" hidden download></a>
Solution 17 - Javascript
You don't need to write js to do that, simply use:
<a href="path_to/image.jpg" alt="something">Download image</a>
And the browser itself will automatically download the image.
If for some reason it doesn't work add the download attribute. With this attribute you can set a name for the downloadable file:
<a href="path_to/image.jpg" download="myImage">Download image</a>