If Windows struggles to open JPG files, here are a few things you can do.

Windows allows you to convert any image file with JPG, JPEG, PNG format to PDF without installing any third-party software via Windows Photos App.

You can convert a JFIF file to JPG, though the two formats are nearly identical, and most software will open a JFIF file as a JPG.

How to fix JPG “invalid image file header” Summary: Images are an important part of our lives, no second thoughts to that. Images remind you of the precious moments you once had and there ...

At this point, make sure the image file is named and designated as either a JPG, TIFF, PNG or BMP, then hit OK to save it. That should make it compatible for image upload with Ancestry.com.

You can convert HEIC files to JPG on a Mac using the Preview app, then you can upload photos to websites that don't support the HEIC format.