prnt.sc (the sharing service behind Lightshot) is popular because it is fast, but it has a well-known privacy weakness worth understanding before you upload anything sensitive.
The core issue: guessable links
prnt.sc assigns screenshots short, sequential codes. Because the codes follow a predictable pattern, people have written scripts that walk through them and view other users' uploads at random. Over the years that has exposed invoices, chat logs, personal documents, and login pages that users assumed were private.
What that means for you
- A prnt.sc link is effectively public, even if you only sent it to one person.
- Anything visible in the screenshot — email addresses, order numbers, tokens — can be seen by strangers.
- There is a browsable element to the service, so "nobody will find it" is not a safe assumption.
A safer way to share
Look for a host that uses random, unguessable links and has no public gallery. On sshot.online, each upload gets a random 7-character code from a large alphabet, so links cannot be enumerated, and there is no gallery to browse. Uploads are anonymous and only known to whoever you share the link with.
If you still want quick region capture like Lightshot, the browser extension gives you that with annotation tools, then produces a private link. For a one-off, just paste your screenshot on the site.
None of this makes a link secret — anyone with the URL can open it — but random, unlisted links are a big step up from sequential, browsable ones.