我可以将图像从base64转换为二进制客户端吗？

Question

After manipulating an image using a canvas element and then getting the result via canvasImg.toDataURL( "image/jpeg", 1.0 ) , is it possible to convert the result into a binary image file client-side? I am trying to avoid

1. a round trip to the server and
2. Sucking the server's RAM into a GD process.

The goal is to edit the image and get it onto s3 as a file without touching my server.

Answer 1

Daniel C 's comment led me to the solution (here at Convert Data URI to File then append to FormData ).

The one extra thing I needed was URL.createObjectURL(blob) , which gave me a string handle to pass the file around.