JustDeleteMe
justdeleteme.xyz
A directory of the direct links for deleting your account on hundreds of sites
haveibeenpwned.com
Tells you which data breaches your email address has turned up in.
Type an address and it lists the breaches containing it, with the date, the company and exactly which fields were exposed — passwords, addresses, security questions. Troy Hunt has run it since 2013 and it is the source most password managers and browsers query behind the scenes. The password search uses k-anonymity, so only the first five characters of your password's hash ever leave your browser.
Questions
Works the moment the page loads. No account, no email, no trial. It only knows about breaches that have been published and loaded — an absence of results is not evidence you are safe.
Yes. Have I Been Pwned sends your input to its own servers to process it. That is fine for public material; for anything containing personal data, use one of the on-device tools instead.
It only knows about breaches that have been published and loaded — an absence of results is not evidence you are safe.
Alternatives
Same category or same task, ordered by how closely they overlap.
justdeleteme.xyz
A directory of the direct links for deleting your account on hundreds of sites
bitwarden.com
Generates a random password or passphrase without leaving the page
coveryourtracks.eff.org
Measures how uniquely identifiable your browser is to a tracker
dnsleaktest.com
Reveals which DNS servers are actually resolving your queries right now
jimpl.com
Shows the hidden EXIF in a photo, including GPS, and gives you a stripped copy
privatebin.net
Shares a note or snippet that encrypts in your browser and expires on schedule