Is there a javascript mechanism to modify EXIF metadata information of Image? [closed]

Question

I am looking for a JavaScript mechanism to modify the image EXIF metadata info, I found plenty of JS libraries that allow me to retrieve EXIF info, but none that modify.

I am looking to modify EXIF orientation information for the image, then save it.

Answer 1

blueimp has a library JavaScript-Load-Image that can modify/parse EXIF tag when loading the image. Here is the link to the code on GitHub

use the loadImage() function and provide the orientation optional field to modify EXIF orientation value.

document.getElementById('file-input').onchange = function (e) {
    loadImage(
        e.target.files[0],
        function (img) {
            document.body.appendChild(img);
        },
        {orientation: 3}
    );
};

Here is a list of EXIF orientation values and the specified rotation info available here: https://beradrian.wordpress.com/2008/11/14/rotate-exif-images/

• 1 = The 0th row is at the visual top of the image, and the 0th column is the visual left-hand side.
• 2 = The 0th row is at the visual top of the image, and the 0th column is the visual right-hand side.
• 3 = The 0th row is at the visual bottom of the image, and the 0th column is the visual right-hand side.
• 4 = The 0th row is at the visual bottom of the image, and the 0th column is the visual left-hand side.
• 5 = The 0th row is the visual left-hand side of the image, and the 0th column is the visual top.
• 6 = The 0th row is the visual right-hand side of the image, and the 0th column is the visual top.
• 7 = The 0th row is the visual right-hand side of the image, and the 0th column is the visual bottom.
• 8 = The 0th row is the visual left-hand side of the image, and the 0th column is the visual bottom.