Which script can cut out the white background of a JPEG product photo by itself?

Question

JPEG

Products on a gray background appeared on the main Aliexpress https://ru.aliexpress.com/ (see screen skrinshoter.ru/s/030318/RaU9ki3y ). But if you go to the source, then these are ordinary JPEGs with a white background. What script do they replace the white background with? Help me find)

Answer 1

Depending on which language you want to do it. On Php you can use Imagick
https://habrahabr.ru/company/io/blog/261529/