MultiMatte (https://usefeyn.com/multimatte/ and documentation: https://github.com/feyninc/nobg) clips an image from a text statement, keeping what has been named and removing the rest.

Import or paste a photo (PNG, JPEG, WebP, HEIC, up to 4 MB), crop if necessary.

Optional instruction: Left blank, the tool will crop the main subject of the image.

A “Matte” tab displays clipping areas in grayscale, white for retained pixels, black for deleted pixels, gray for transition areas. Can be used in advanced image editing tools.

Export png.

Note: only English instructions work.

Open source, no accounts, and seems unlimited.

Wikimedia Commons sources:

• https://commons.wikimedia.org/wiki/File:Tallinna_vanalinn_p%C3%A4ikeset%C3%B5usu_ajal.jpg
• https://commons.wikimedia.org/wiki/File:Gary_Plant_Tubular_Steel_Corporation.jpg
• https://commons.wikimedia.org/wiki/File:Oregon_National_Historic_Trail_in_Wyoming.jpg
• https://commons.wikimedia.org/wiki/File:002_Jabiru_feeding_its_babies_in_their_nest_in_Encontro_das_%C3%81guas_State_Park_Photo_by_Giles_Laurent.jpg