[imposterr]

If you use any of the better password managers this feature exists and runs automatically. If you don't want to go that route, then you can make use of https://haveibeenpwned.com/

[slashtab]

I have a gmail account which google one shows, it along with a username has been leaked on dark web, but haveibeenpwned shows email was not found in any data breach. How is that possible?

[michaelbuckbee]

They're using different data sources.

[lelanthran]

Thank you, I've edited my comment to be more specified