Resizing JPEG without losing Quality

Question

I am trying to work on a small webbased Image editor with .NET . I am having issue with JPEG image resize.As I understand there is no way to manipulate JPEG without loosing some

Answer 1

PNG format is a lossless format, so as long as you are creating the PNG with the source image you are OK.

For reference:

JPEG - Lossy for most of the specifications (the new spec has a lossless format also, but not many libraries support it yet).

PNG - Lossless

TIFF - Lossless (RLE encoding)

BMP - Lossless (RAW encoding)