Security of online Pdf converter & any way to clear them

Are the files uploaded to those online PDF converter accessible only to the person who upload it
(& the admin of the site) or it's accessible to other parties publicly as well?

is there any way to clear away to those files that have been uploaded?
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KimputerIT ManagerCommented:
You will have to trust the site to keep the files safe and immediately delete them. However, you still depend on their EULA and how good they are to keep them. Nothing is guaranteed, especially if it's a free site.
Pawan KumarDatabase ExpertCommented:
There is no choice but to trust the websites we are using.

You can use this website for removing pdf password. It is free

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