Reading/Writing EXIF data with JPGs

Has anyone written/used code in Unity to read or write EXIF data for jpgs?
I want to add exif data on saving a texture to jpg

 

There are some EXIF libraries for C# out there on the web. The first google search I found was for .NET 4.0 but since it is open source, perhaps you can get somewhere with it anyway, since JPEG is a pretty well-established standard with lots of different ways of getting at the data.

 

Yes many out there but most rely on System.Drawing dll which can be hacked into Unity, but not exactly cross platform.
To write a specific jpg EXIF header I ended up making a byte array from a source jpg's header and rewriting the header on exported jpgs.

 

Any examples of this we could reference? I've built a working Unity 2019-based project to READ the EXIF data (https://github.com/tedbarnett/read-exif-in-unity), but I can't find ANY Unity-friendly code online that would let me update a few of the fields (e.g. date, location) and write these back to the original JPG.

 

That was a long time ago I think I was just copying a preset data set to replace default EXIF data. I would look for more open source

 

Just wanted to answer that the best option right now, after a few days of research, is still project:

https://www.codeproject.com/Articles/5251929/CompactExifLib-Access-to-EXIF-Tags-in-JPEG-TIFF-an

This is a simple one-file project that you can drag in your unity project and that has no external dependencies. And it can read and update EXIF tags for JPG, PNG and TIFF files.