The pattern across all five: the platforms with the harshest enforcement are the ones that read your metadata least. Etsy will remove a listing over an undisclosed generated image and has no mechanism to read the marking you embedded. The written line is doing all the work there. Do not let a tool — this one included — convince you that marking the file is enough.
Testing your own platform
Policies change and pipelines change more often. Rather than trusting this page, run the check yourself. It takes five minutes and the answer is specific to how your shop is configured:
- 1Mark a test image with the free labeler and keep the file.
- 2Upload it to a draft listing on your platform.
- 3Open the live listing, right-click the image, save it.
- 4Run exiftool -G1 -a on the file you just saved.
If DigitalSourceType comes back, the marking survived and buyers get a file that carries its own disclosure. If it does not, the marking still exists on the master you hold — which is what you produce if anyone asks what you published — but the listing text is the only thing a buyer will ever see. Write it properly.
The labeler is on the front page and does not need an account.