The seller sends you a screenshot. A traffic graph, climbing nicely, green and reassuring. “As you can see, traffic's been strong and growing.” And for a second you relax, because the picture looks like exactly the business you want to own.
Here's the thing about that screenshot: it's a painting. Someone chose the frame, the dates, the angle. A screenshot of analytics tells you what the seller wanted you to see, in the shape they wanted you to see it. It is not the same as the traffic being real, and it's definitely not the same as the traffic being durable — which is the part that determines whether you're buying an income or a sandcastle at low tide.
Real traffic and durable traffic are two different questions, and you have to ask both.
For real, you need to get out of the screenshot and into the actual account. Read access to the live analytics — GA4, whatever they run — not exports, not images, the real thing where you can change the date range yourself. The moment a seller resists that, slow down. There's a difference between “I'll grant analytics access during diligence” and “here's another screenshot.”
Once you're in, you're looking for fragility:
- Where does the traffic come from? One source is a stool with one leg. If 80% is organic search, your whole purchase rides on Google's next update. If it's one social account, it rides on one algorithm and one person's posting. If it's a single referring site, it rides on a relationship you're not party to.
- Is it concentrated on one page? Pull the top pages. If a single article is carrying most of the traffic, you're not buying a site — you're buying a page, and one Google update or one competitor can take it.
- What does it look like over two years, not six months? Short windows hide seasonality and decline. Stretch the date range back as far as it goes and look for the shape — growing, flat, or quietly sliding with a recent bump.
- Is there a suspicious spike near the listing date? Traffic that conveniently surges right before a sale is worth a hard look. Sometimes it's real. Sometimes it's bought, borrowed, or a one-off that won't repeat.
- Branded vs. non-branded search. If most organic traffic is people typing the brand name, that's loyalty (good) but it may walk away with the founder. If it's all non-branded keywords, check whether those rankings are stable or freshly won.
And cross-check against Google Search Console, because that's where you see impressions, clicks, the actual queries, and — this matters — whether there's a manual action sitting on the site that the seller forgot to mention.
None of this requires you to be a traffic analyst. It requires you to refuse the screenshot and insist on the account, then ask where the traffic comes from and what happens if that one source has a bad month.
If you've got a deal in front of you and the traffic story feels a little too clean, that's exactly the kind of thing a pre-purchase audit pulls apart — and the free guide walks through the questions to put to the seller. But even on your own: don't buy the painting. Ask to see the thing it's a painting of.