Javascript - get extension from base64 image
Was just tweaking with the string. May be this could help.
base64Data.substring("data:image/".length, base64Data.indexOf(";base64"))
A bit late but it seem the question was misunderstood. He just only had the base64 content of the image, not the full data URI.
I wrote here for anyone who encounters with this quest, you can read the first character of content content.charAt(0)
. By base64 image content if the first char is:
'/' : jpg
'i' : png
'R' : gif
'U' : webp
So for your case, it is 'jpg'.