How to recover a lost or forgotten password on your Mac

Ever forget a password? Here's how to get it back.

[daintreekennels]

OMG thank you so much. I ended up having to use an old router for which I could not remember the password. Old devices remembered it but I couldn't see it anywhere to add the new devices to it. I googled and found your account and now I have my old password. Thank you <3

[PatriotTrucker]

I forgot my password to a numbers file.
Not a sheet, but the whole file.
Is there anyway to recover the password?

[KamalKay]

Holy shit it worked!! thank you so much

[carlosfunez-luem]

did yoy discovered how to apen a DMG file with lost password??? i lost my dmg password and cannot open anymore :(