> Further findings: neither Safari, Chrome, or Firefox respects exiftool's default output, which appends EXIF to the end of a PNG. Makes sense. I have to imagi

> Further findings: neither Safari, Chrome, or Firefox respects exiftool's default output, which appends EXIF to the end of a PNG. Makes sense. I have to imagine there is a performance impact to waiting until you've downloaded the entire image _just in case_ there's some metadata telling you to rotate it right at the end of the stream.