问题
I need to update EXIF info in a lot of .png files (tens of thousands of hires pictures) and I wonder if there is some (not too complicated and documented) way that I can do that without opening (decompressing the whole image) and then re-save it (compressing it again)?
回答1:
Unfortunately the .Net GDI+ image format support is very patchy.
Consider ImageMagick. There is a .Net wrapper for it.
- http://www.imagemagick.org/script/index.php
Also consider ExifTool:
- http://owl.phy.queensu.ca/~phil/exiftool/
来源：https://stackoverflow.com/questions/9192480/updating-exif-info-in-image-files