CODEWITHSUNDEEP
javascripthtmlpdfcanvasbase64
onuryilmaz
onuryilmaz

Reputation: 398

Convert PDF to a Base64-encoded string in Javascript

I need to encode a PDF file to Base64 with Javascript. I can create Base64-encoded jpeg or png images in Javascript, but I could not find any way or sample code to create a Base64-encoded string from a PDF file.

Is it there any solution using a HTML5 canvas?

Thanks.

Upvotes: 33

Views: 137085

Answers (3)

M Junaid
M Junaid

Reputation: 924

     function Selectfile() {
        document.getElementById('fileInput').click();
    };

     function handleFileSelect (event) {
        var selectedFile = event.target.files[0];
        if (selectedFile) {
            var reader = new FileReader();
            reader.onload = function (event) {
            
                    var selectedFile = selectedFile;
                    // Convert the file to Base64
                    var selectedFileBase64 = event.target.result.split(',')[1];
                    console.log(selectedFileBase64);
               
            };
            reader.readAsDataURL(selectedFile);
        }
    };
    document.getElementById('fileInput').addEventListener('change', handleFileSelect);
<button onclick="Selectfile()">Browse</button>

<input type="file" id="fileInput" style="display: none;"/>

Upvotes: -1

Mohit Singh
Mohit Singh

Reputation: 591

Try this :-

<input id="inputFile" type="file" onchange="convertToBase64();" />

<script type="text/javascript">
    function convertToBase64() {
        //Read File
        var selectedFile = document.getElementById("inputFile").files;
        //Check File is not Empty
        if (selectedFile.length > 0) {
            // Select the very first file from list
            var fileToLoad = selectedFile[0];
            // FileReader function for read the file.
            var fileReader = new FileReader();
            var base64;
            // Onload of file read the file content
            fileReader.onload = function(fileLoadedEvent) {
                base64 = fileLoadedEvent.target.result;
                // Print data in console
                console.log(base64);
            };
            // Convert data to base64
            fileReader.readAsDataURL(fileToLoad);
        }
    }
</script>

Upvotes: 45

user1452483
user1452483

Reputation:

Here is how one person did it:

Here is a link that suggests several other possible solutions:

Upvotes: 2

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