Where can I get a free credit report that does not ask me for a credit card number to use?

You hear all of these adds for Freecreditreport.com, but when I visit the site it looks like a scam; it is asking me for my credit card information.
Where can I visit a hassle-free site that does not ask for a credit card number to get a credit check?
Also, do credit checks hurt my credit if [...]

Where can I get a free credit report without having a credit card?

I’d like to check my credit score online for free. Does anyone know a website that does not require a credit card to check it? Thanks!