How to Set Image Source with Base64

How can I set Image source with base64

Remove the line-breaks in the base64:

document
    .getElementById('img')
    .src = 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU5ErkJggg==';

how to set base64 url to image src

You need to make sure you code runs after the element is loaded (if your script is in your <head> tag, the element doesn't actually exist yet).

And if it isn't already there, you'll need to prepend the data metadata for images: data:image/png;base64, (taken from including images in CSS).

Here is a working example.

var imageData = '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'
var img = document.getElementById('dishPhoto');img.src = 'data:image/png;base64,' + imageData;

<img src="" id="dishPhoto">

How to display Base64 images in HTML

My suspect is of course the actual Base64 data. Otherwise it looks good to me. See this fiddle where a similar scheme is working. You may try specifying the character set.

<div>
  <p>Taken from wikpedia</p>
  <img src="data:image/png;base64, iVBORw0KGgoAAAANSUhEUgAAAAUA
    AAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO
        9TXL0Y4OHwAAAABJRU5ErkJggg==" alt="Red dot" />
</div>

How to use Base64 Encoded Image as img tag's source?

Yes you can use base64 images but make your the images are small and less in no.. below is a basic code where base64 images are called into html pages and rendered

<div>
    <p>Taken from wikpedia</p>
    <img src="data:image/png;base64, iVBORw0KGgoAAAANSUhEUgAAAAUA
AAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO
    9TXL0Y4OHwAAAABJRU5ErkJggg==" alt="Red dot" />
</div>

check the fiddle http://jsfiddle.net/hpP45/

Linking an image source based on base64

This should get around it and achieve the same thing..

<html>

    <script>
    
        function openDataUrl(base64URL){
            let aWindow = window.open();

            aWindow.document.write('<iframe src="' + base64URL  + '" frameborder="0" style="border:0; top:0px; left:0px; bottom:0px; right:0px; width:100%; height:100%;" allowfullscreen></iframe>');
        }
    
    </script>

    <body>
        <a href="javascript:void();" onclick="openDataUrl('data:image/png;base64,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
T5uP1IQxToyOAZiQu5HEpjeA4SWIoksRxNiGC1tRZJ4LNxgHgnU5nJZBDvuDdl8lzQRBsQ+s9PZt7s7Pz8wsL39/DkIfZ4xlB2Gqsq62ta9oxVlVrNZpihFRpGO9fzQw1ms0NDWZz07iGkJmIFH8xxkc3a/WWlubmFkv9AB2SEpDvKxbjidN2faseaNV3zoHXvv7wMODJdkOHAegweAfFPx4G67KluxzottCU9n8CUqXzcIQdXOytAHqXxomvykhEKN9EFutG22p//0rbNvHVxiJywa8yS2KDfV1dfbu31H8jF1RHiTKtWYeHxUvq3bn0pyjCRaiRU6aDO+gb3aEfEeVNsDgm8zzLy9egPa7Qt8TSJdwhjplk06HH43ZNJ3s91KKCHQ5x4sw1fRGYDZ0n1L4FKb9/BP5JLYxToheoFCVxz57PPS8UhhEpLBVeAAAAAElFTkSuQmCC')">Open</a>
    </body>
    
</html>

Use Base64 String from URL in src tag of image

It is not working because you are treating a page featuring a Data URL string, as if were just another type of external link-able image asset. Unfortunately linking to an external asset works for image files, but Data URLs are meant as an alternative to an external link, and thus does not work in the same way.

In short, to display an image making use of a data URL string, you need put the actual data URL string as the src= value, in your case for example:

<img alt="" src="data:image/gif;base64,iVBORw0KGgo ...  " style="height:836px; width:592px">

Examples

Example HTML from Masinter, 1998 RFC 2397 - The "data" URL scheme:

<IMG SRC="data:image/gif;base64,R0lGODdhMAAwAPAAAAAAAP///ywAAAAAMAAw AAAC8IyPqcvt3wCcDkiLc7C0qwyGHhSWpjQu5yqmCYsapyuvUUlvONmOZtfzgFz ByTB10QgxOR0TqBQejhRNzOfkVJ+5YiUqrXF5Y5lKh/DeuNcP5yLWGsEbtLiOSp a/TPg7JpJHxyendzWTBfX0cxOnKPjgBzi4diinWGdkF8kjdfnycQZXZeYGejmJl ZeGl9i2icVqaNVailT6F5iJ90m6mvuTS4OK05M0vDk0Q4XUtwvKOzrcd3iq9uis F81M1OIcR7lEewwcLp7tuNNkM3uNna3F2JQFo97Vriy/Xl4/f1cf5VWzXyym7PH hhx4dbgYKAAA7" ALT="Larry">

How can I convert an image into Base64 string from an image source?

I think you want to do this https://jsfiddle.net/samet19/yv9a4op8/

function encodeImageFileAsURL() {
  var filesSelected = document.getElementById("inputFileToLoad").files;
  if (filesSelected.length > 0) {
    var fileToLoad = filesSelected[0];
    var fileReader = new FileReader();
    fileReader.onload = function(fileLoadedEvent) {
      var srcData = fileLoadedEvent.target.result; // <--- data: base64
      var newImage = document.createElement('img');
      newImage.src = srcData;
      document.getElementById("output").src = newImage.src;
    }
    fileReader.readAsDataURL(fileToLoad);
  }
}

trying to store image as base64 and using it

first of all check what this variable is, because you do not use es6 arrow functions, so this is probably not the vue instance.
the second thing: when you change vue-variables asynchronously use the $set method, like: this.$set(this, 'image', '~/assets/images/account/camera.png')

How to get base64 img src and insert it into input.files

You need convert base64 image to file, then use DataTransfer to recivie the file. You can try my sample code like below.

@{
    ViewData["Title"] = "Home Page";
}
@model Net5_MVC.Controllers.HomeController.mainImageInput
<script src="https://code.jquery.com/jquery-3.6.0.js" integrity="sha256-H+K7U5CnXl1h5ywQfKtSj8PCmoN9aaq30gDh27Xc0jk=" crossorigin="anonymous"></script>
<script>
    function dataURLtoFile(dataurl, filename) {

        var arr = dataurl.split(','),
            mime = arr[0].match(/:(.*?);/)[1],
            bstr = atob(arr[1]),
            n = bstr.length,
            u8arr = new Uint8Array(n);

        while (n--) {
            u8arr[n] = bstr.charCodeAt(n);
        }

        return new File([u8arr], filename, { type: mime });
    }
    function ConvertClick(base64url) {
        var file = dataURLtoFile(base64url, "test.png");
        let container = new DataTransfer();
        container.items.add(file);
        document.querySelector('#mainImageInput').files = container.files;
        var newfile = document.querySelector('#mainImageInput').files[0];
    }
</script>

<div class="text-center">
    <h1 class="display-4">Welcome</h1>
    <p>Learn about <a href="https://learn.microsoft.com/aspnet/core">building Web apps with ASP.NET Core</a>.</p>
</div>

<img id="mainImage" style="width:200px;height:160px" src="@Model.ImageInBase64">

<input asp-for="Image" id="mainImageInput" style="display:none" type="file" accept="image/jpeg, image/png" class="form-control" />
<button onclick="ConvertClick('@Model.ImageInBase64')">Convert</button>

Test Result:

Sample Image