hardrisk.github.io/file2base64.html at master · hardrisk/hardrisk.github.io · GitHub

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<html>
<body>
<center>
<p>Select a File to Load:</p>
<input id="inputFileToLoad" type="file" onchange="loadImageFileAsURL();">


<p>File Contents as DataURL:</p>
<textarea onfocus="this.select()" onmouseover="this.focus()" onclick="this.focus();this.select()" id="textAreaFileContents" style="width:640;height:240"></textarea>

<script type="text/javascript">
function loadImageFileAsURL()
{
    var filesSelected = document.getElementById("inputFileToLoad").files;
    if (filesSelected.length > 0)
    {
        var fileToLoad = filesSelected[0];

        var fileReader = new FileReader();

        fileReader.onload = function(fileLoadedEvent)
        {
            var textAreaFileContents = document.getElementById
            (
                "textAreaFileContents"
            );

            textAreaFileContents.innerHTML = fileLoadedEvent.target.result;
        };

        fileReader.readAsDataURL(fileToLoad);
    }
}
</script>
<br><a href="https://thiscouldbebetter.wordpress.com/2013/07/03/converting-a-file-to-a-base64-dataurl-in-javascript/">kaynak</a><br>
</body>
</center>
</html>