sample base64 image url javascript

stackoverflow.com › questions › 22172604 › convert-image-from-url-to-base64

HTML

<img id="imageid" src="https://www.google.de/images/srpr/logo11w.png">

JavaScript

function getBase64Image(img) {
  var canvas = document.createElement("canvas");
  canvas.width = img.width;
  canvas.height = img.height;
  var ctx = canvas.getContext("2d");
  ctx.drawImage(img, 0, 0);
  var dataURL = canvas.toDataURL("image/png");
  return dataURL.replace(/^data:image\/?[A-z]*;base64,/);
}

var base64 = getBase64Image(document.getElementById("imageid"));

Special thanks to @Md. Hasan Mahmud for providing an improved regex that works with any image mime type in my comments!

This method requires the canvas element, which is perfectly supported.

The MDN reference of HTMLCanvasElement.toDataURL().
And the official W3C documentation.

Answer from ˈvɔlə on Stack Overflow

Tick

pqina.nl › blog › convert-an-image-to-a-base64-string-with-javascript

Convert An Image To A DataURL or Base64 String Using JavaScript - Pqina

We’ll be converting images to DataURLs, we can use the function below to convert a DataURL to a Base64 string. const getBase64StringFromDataURL = (dataURL) => dataURL.replace('data:', '').replace(/^.+,/, ''); Let’s get started.

Medium

medium.com › @j622amilah › javascript-basics-45-154fcf627ab5

JavaScript Basics 45. Image url fetch, base64 encoding for… | by Practicing DatScy | Medium

May 19, 2026 - // document.getElementById(this_id).src = "data:image/jpg;base64,"+binaryString_base64; // OR // [way 1] reconstruct the base64 to a blob, the load a blob. var binaryString = atob(binaryString_base64); document.getElementById("p0").innerHTML ...

Discussions

convert base64 to image in javascript/jquery - Stack Overflow

I think I'm looking for the same thing OP is. I believe he wants the image url to point to a .png, not the original base64 encoded string. Looking for a conversion somewhere in there if it is possible. More on stackoverflow.com

stackoverflow.com

Is there a way to convert the s3 image URL to base64.?

You don’t want to convert the URL to base64, how would that help? You want to convert the image content to base64.

Top answer

1 of 12

172

HTML

<img id="imageid" src="https://www.google.de/images/srpr/logo11w.png">

JavaScript

function getBase64Image(img) {
  var canvas = document.createElement("canvas");
  canvas.width = img.width;
  canvas.height = img.height;
  var ctx = canvas.getContext("2d");
  ctx.drawImage(img, 0, 0);
  var dataURL = canvas.toDataURL("image/png");
  return dataURL.replace(/^data:image\/?[A-z]*;base64,/);
}

var base64 = getBase64Image(document.getElementById("imageid"));

Special thanks to @Md. Hasan Mahmud for providing an improved regex that works with any image mime type in my comments!

This method requires the canvas element, which is perfectly supported.

The MDN reference of HTMLCanvasElement.toDataURL().
And the official W3C documentation.

2 of 12

View this answer: https://stackoverflow.com/a/20285053/5065874 by @HaNdTriX

Basically, he implemented this function:

function toDataUrl(url, callback) {
    var xhr = new XMLHttpRequest();
    xhr.onload = function() {
        var reader = new FileReader();
        reader.onloadend = function() {
            callback(reader.result);
        }
        reader.readAsDataURL(xhr.response);
    };
    xhr.open('GET', url);
    xhr.responseType = 'blob';
    xhr.send();
}

And in your case, you can use it like this:

toDataUrl(imagepath, function(myBase64) {
    console.log(myBase64); // myBase64 is the base64 string
});

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More results from stackoverflow.com

TutorialsPoint

tutorialspoint.com › converting-images-to-a-base64-data-url-using-javascript

Convert Image to Data URI with JavaScript

August 26, 2022 - <!DOCTYPE html> <html> <head> <title>Convert Image URL to Data URI</title> </head> <body> <img src="https://via.placeholder.com/150" id="myImg" alt="Sample Image"> <button onclick="convertImage()">Convert to Data URI</button> <div id="output"></div> ...

DEV Community

dev.to › snappy_tools › image-to-base64-the-complete-guide-with-html-css-and-javascript-examples-k9h

Image to Base64: The Complete Guide (with HTML, CSS, and JavaScript examples) - DEV Community

May 18, 2026 - ... The browser renders this exactly like a normal <img> tag. No network request needed. ... .icon { background-image: url('data:image/png;base64,iVBORw0KGgo...'); width: 24px; height: 24px; background-size: contain; }

Staxmanade

staxmanade.com › 2017 › 02 › how-to-download-and-convert-an-image-to-base64-data-url

How to Download and Convert an Image to Base64 Data Url - Developing on Staxmanade

February 26, 2017 - getBase64ImageFromUrl('http://approvaltests.com/images/logo.png') .then(result => testImage.src = result) .catch(err => console.error(err)); As an alternative to base64 encoded FileReader approach above, you can also also use the URL.createObjectURL return URL.createObjectURL(blob);

The Web Dev

thewebdev.info › home › how to get image data as a base64 url in javascript?

How to Get Image Data as a Base64 URL in JavaScript? - The Web Dev

March 20, 2021 - We can convert an image to a base64 URL by loading the image with the given URL into the canvas and then call toDataURL to convert it to base64. How to Parse a URL into the Hostname and Path in JavaScript?

Find elsewhere

Google Bing Mojeek

Bobby Hadz

bobbyhadz.com › blog › convert-image-to-base64-using-node

Convert an Image or an Image URL to base64 in Node.js | bobbyhadz

The imageUrlToBase64() function takes the complete URL that points to the image as a parameter and converts the image URL to a base64 string.

CodePen

codepen.io › jamiekane › pen › YayWOa

Base64 Image Example

<img src="data:image/png;base64,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

JSFiddle

jsfiddle.net › Saravanan_Rajaraman › yhgfxdp8

Image URL to Base64 - JSFiddle - Code Playground

CSS Import: @import url('@jsfiddle/[username]/[fiddle].css')

YouTube

youtube.com › watch

How to Convert Images Into Base 64 Data URLs with JavaScript - YouTube

04:17

In today's tutorial I'll show you how to convert an image to data URL in JavaScript. This is very easy to do by using the FileReader object.For your referenc...

Published: August 16, 2022

DEV Community

dev.to › dcodeyt › how-to-convert-images-to-base64-data-urls-in-javascript-2n3i

How to Convert Images to Base64 Data URLs in JavaScript - DEV Community

August 31, 2022 - const fileInput = document.getElementById("fileInput"); fileInput.addEventListener("change", e => { const file = fileInput.files[0]; const reader = new FileReader(); reader.addEventListener("load", () => { // Base64 Data URL 👇 console.lo...

Base64.Guru

base64.guru › home › developers › javascript › examples

Convert image to Base64 in JavaScript | Examples | JavaScript | Developers | Base64

How to convert images to Base64 in JavaScript using the canvas.toDataURL() method

Stack Overflow

stackoverflow.com › questions › 21227078 › convert-base64-to-image-in-javascript-jquery

convert base64 to image in javascript/jquery - Stack Overflow

Top answer

1 of 7

212

You can just create an Image object and put the base64 as its src, including the data:image... part like this:

var image = new Image();
image.src = 'data:image/png;base64,iVBORw0K...';
document.body.appendChild(image);

It's what they call "Data URIs" and here's the compatibility table for inner peace.

2 of 7

Html

<img id="imgElem"></img>

string baseStr64="/9j/4AAQSkZJRgABAQE...";
imgElem.setAttribute('src', "data:image/jpg;base64," + baseStr64);

W3docs

w3docs.com › javascript

How to Convert the Image into a Base64 String Using JavaScript | W3Docs

There are several approaches in JavaScript that can help you with converting the image into a Base64 string. Firstly, create a canvas, then load the image into it and use toDataURL() to get the Base64 representation. In fact, it is a data URL, but it contains the Base64-encoded image:

Base64.Guru

base64.guru › home › base64 converter › base64 encode

Image to Base64 | Base64 Encode | Base64 Converter | Base64

Convert image to Base64 online and use the result string as data URI, img src, CSS background-url, and others. Sometimes you have to send or output an image within a text document (for example, HTML, CSS, JSON, XML), but you cannot do this because binary characters will damage the syntax of the text document.

codestudy

codestudy.net › blog › convert-image-from-url-to-base64

How to Convert Image URL to Base64 in JavaScript: Step-by-Step Guide for Local Saving — codestudy.net

HTML5 Understanding: Awareness of the <canvas> element and Blob/File APIs. Tools: A code editor (e.g., VS Code), a modern browser (Chrome, Firefox, Edge), and an image URL for testing (e.g., https://example.com/image.jpg).

Tick

pqina.nl › blog › convert-a-file-to-a-base64-string-with-javascript

Convert A File To A Base64 String Or DataURL Using JavaScript - Pqina

<input type="file" /> <script> // Get a reference to the file input const fileInput = document.querySelector('input'); // Listen for the change event so we can capture the file fileInput.addEventListener('change', (e) => { // Get a reference to the file const file = e.target.files[0]; // Encode the file using the FileReader API const reader = new FileReader(); reader.onloadend = () => { // Use a regex to remove data url part const base64String = reader.result .replace('data:', '') .replace(/^.+,/, ''); console.log(base64String); // Logs wL2dvYWwgbW9yZ... }; reader.readAsDataURL(file); }); </script> Sometimes we just want to use an File object as an image source.

CodePen

codepen.io › caeroa › pen › MWeyGYz

Image to Base64 url

Minimize JavaScript Editor · Fold All · Unfold All · /** * Convert an image to a base64 url * @param {String} url * @param {String} [outputFormat=image/png] */ function convertImageToBase64(img, outputFormat) { var originalWidth = ...

Formspree

formspree.io › blog › image-to-base64

How to Convert an Image URL to Base64 | Formspree

August 28, 2024 - Fetching the Image: The Fetch API ... image URL, retrieving the image data as a response object. Converting to ArrayBuffer: The response object typically contains the image data in a binary format. You can use the arrayBuffer() method to convert this binary data into an ArrayBuffer, a more efficient representation for manipulation. Base64 Encoding with btoa: Once you have the image data as an ArrayBuffer, you can leverage the built-in btoa function in JavaScript...