Is it possible to save the "selection" "vector path" or "alpha channel of this selection" to a jpg file?

Question

Image processing

How do professional stock photographers save JPG isolates? Do JPG files "isolates from stocks with a white background" do not contain selection alpha channels?

Answer 1

Photoshop definitely used to save the clipping path as a JPEG if using Save as... rather than Save for web. I don't know about new versions.
Update: clipping path is stored in metadata as SVG XML.

Answer 2

If you read the description of the JPEG format , you will even understand why it is impossible. However, you can write anything in the meta-data, but you will have to look for an editor that can save the "vector path" or the alpha channel in JPEG.