Free tool

Red-flag checker bookmarklet: check any listing in one click

Short answer: drag the button below to your bookmarks bar. On any business-for-sale listing (Flippa, Empire Flippers, Acquire.com, a broker page), click it: the page text opens in the free checker in a new tab and runs. No install, no account.

Updated 16 October 2026 · By Joan Murphy (pen name) · How we check · Corrections

Free: the 33 red flags buyers miss, emailed to you, each with the question to send the seller, plus the 72-hour vetting plan and deal tracker.

One email with your links (they also open on the next page). No newsletter.

FirstPass check ← drag this to your bookmarks bar (clicking it here does nothing)

How it works, and what it sends

Tips

FAQ

Does the bookmarklet work on every site?

On most. A few sites block bookmarklets; in that case copy the listing text and paste it into the checker.

Is it safe?

The code is the button link itself: it reads page text and opens a new tab. It loads no external script.