We should only select date information IMO. Many people wouldn’t want to share all EXIF tags.

We probably need to offer to scrub EXIF and copy the right bits if the user doesn't request it.

EXIF scrubbing is a good privacy measure.

It's also a lot more work, since we need to make sure ALL images get EXIF scrubbed, including those which are not resized.

Looks like I could just remove the ImageWidth / ImageLength tags if they are present, and wrap this in a "PRESERVE_EXIF_DATA" option that defaults to False.

Of course I can't pop tags. There is nothing on PIL to support re-encoding the dict into the right format for saving into the image. So that would mean a new dependency.

Or adopting this code: https://github.com/zenwerk/Pyxif/blob/master/pyxif/_load_and_dump.py

I agree with @Kwpolska about only copy dates, at least for the first version.

In the future version, it would be great to have a config where you can write down all the EXIF fields you want to be shared in your gallery. If the person choose widht and size, we should put the right one in the resized image.

Regarding new dependency. I'm not sure, but I think it easier to maintain a new dependency that a bunch of code from "somewhere". In fact, this dependency could be optional as many other that nikola already has.

@humitos can't be done. All or nothing. "Some" requires an extra dependency. In any case, for JPG at least, noone puts the size in the EXIF tags.

This code seems to more or less do what the user would expect. My initial concern about preserving EXIF data with wrong image size seems unfounded. While theoretically possible, no images I have seen actually HAVE that data, and even if they had it, viewers happily ignore it and use the real image sizes from the image format native metadata.

WTH let's merge this, if it breaks anything let me know.