Convert Data URI to File then append to FormData

Question

I\'ve been trying to re-implement an HTML5 image uploader like the one on the Mozilla Hacks site, but that works with WebKit browsers. Part of the task is to extract an imag

Answer 1

The evolving standard looks to be canvas.toBlob() not canvas.getAsFile() as Mozilla hazarded to guess.

I don't see any browser yet supporting it :(

Thanks for this great thread!

Also, anyone trying the accepted answer should be careful with BlobBuilder as I'm finding support to be limited (and namespaced):

    var bb;
    try {
        bb = new BlobBuilder();
    } catch(e) {
        try {
            bb = new WebKitBlobBuilder();
        } catch(e) {
            bb = new MozBlobBuilder();
        }
    }

Were you using another library's polyfill for BlobBuilder?