JPEG files from Chrome/Safari on iPhone, autoconverted from HEIC has rotation issues about sharp HOT 2 CLOSED

sharp will only rotate pixels if you tell it to.

Use rotate() to auto-orient and remove the EXIF Orientation value or use keepExif() to retain the existing EXIF Orientation value.

from sharp.

Thanks for the information. I'm now rotating manually and it works great.

The odd thing about stated pixels and actual pixels might be worth mentioning in the docs. In my case I discovered the problem due to "bad extract area". I tried to crop the file based on the stated pixels, i.e. landscape. In practice the image was portrait and my crop went outside of the image area. It took a while to understand this, because iPhone only seems to create this discrepancy on portrait images, not landscape.

It would also be useful with some more info in the docs about EXIF orientation numbers. It's easy to find, but it would have saved me some hedache because I initially thought that orientation was the same as rotation, i.e. 6 degrees. But 6 means "rotate 90".

I found the info here: https://blog.praveen.science/crazy-image-exif-orientation-bug-or-feature/

And also.
Thank you soo much for the Sharp library. It's really awesome!

from sharp.