How Do You Spot a Fake PnL Screenshot?
You largely cannot, and that is the point: any number on a web page can be edited in the browser's developer tools in seconds, and the screenshot looks identical. Treat a P&L screenshot as an unverifiable claim, whether or not it was edited, and ask for a record instead.
Why is a screenshot unverifiable in principle?
Because a browser renders text you can change. Right-click, inspect, retype the number, screenshot — the whole operation takes about ten seconds and leaves no artifact for you to detect. Mobile app screenshots take longer to fake convincingly and are still faked routinely.
So the useful question is not "is this one edited". It is "what would this prove if it were real", and the answer is: that one position, at one moment, in one account, chosen by the person showing it to you.
What are the tells worth checking anyway?
Unrealised versus realised. An open position showing +$14,000 is a number that can still become anything. Ask for the closed P&L on the same trade, which is the only version that ever mattered.
A percentage with no base. "+340%" on an unstated account size is not a claim about money. On $300 it is $1,020.
Cropping. Account value, position size, buying power and the rest of the positions list are cropped out of almost every screenshot that circulates. What is cropped is the denominator, and the denominator is the whole story.
Demo and paper accounts. They render identically to live accounts in most platforms. There is often no visual difference at all.
Font and alignment artifacts. Edited numbers sometimes sit a pixel off the baseline or use a slightly different weight. Worth a look; not worth relying on.
What about a portfolio of screenshots?
Twenty winning screenshots are weaker evidence than one honest month, because they are twenty draws from an unknown number of attempts. Someone running 10 accounts and posting the best one is posting a real screenshot every time. Someone posting their best trade of each month is also posting real screenshots every time. Neither tells you what the other 200 trades did.
The arithmetic version: if a strategy loses 30% to 60% of the time, then in any 20 consecutive trades a real trader has 6 to 12 losses. A feed of 20 wins in a row is not describing a strategy, it is describing a filter.
What request settles it?
"Send me the same screen with the account value and the full position list, and the losing trade from the same week." Every honest trader can do this in a minute. Nobody curating can do it at all.
The durable version is every trade, including the losers, timestamped before the fact, on a record the person being evaluated cannot edit — a record with no crop to make.
The reason a screenshot is the default artifact is that it is the cheapest one to produce, and the category rewards cheap artifacts: investment scams that began on social media accounted for $1.1bn of reported US consumer losses in 2024, more than half of everything lost to social-media scams.[1]
What a winning feed does has a name, and it is simpler than the name suggests. That is survivorship bias: the failures are not in the count. Brown and colleagues measured it on funds in 1992 — look only at the ones still running and the average looks like skill.[2] A feed of winning screenshots is the same thing, done on purpose and one trade at a time.
The durable answer is every trade, including the losers, timestamped before the fact, on a record the person being evaluated cannot edit. On kappi that is structural rather than voluntary: the trade is committed before it resolves, sealed, then published on a Merkle-anchored log, with PnL, RME, correlation to SPX, mean R:R and trade count over 30, 100 and 200-day windows on the profile. There is nothing to crop. $15/month to keep one; reading one is free.
Sources
- FTC, 'New FTC Data Show People Have Lost Billions to Social Media Scams', April 2026 — investment scams originating on social media accounted for $1.1bn, over half of all social-media scam losses read 2026-08-16
- Brown, Goetzmann, Ibbotson & Ross, 'Survivorship Bias in Performance Studies', Review of Financial Studies 5(4), 1992, 553–580 read 2026-08-16
Frequently asked questions
Can broker profit screenshots be edited?
Yes. Any number on a web page can be changed in the browser's developer tools in about ten seconds, and the resulting screenshot is indistinguishable from a real one. Mobile screenshots are faked routinely too.
Does an unrealised profit screenshot mean anything?
Very little. An open position can still become anything, including a loss. The only number that ever mattered is the closed P&L, so ask for the same trade after it was exited.
Why do traders crop their screenshots?
What gets cropped is usually the account value, the position size and the rest of the positions — in other words the denominator. A gain means nothing without the size of the account that produced it.
What should I ask for instead of a screenshot?
The same screen uncropped, plus a losing trade from the same week. Better still, a complete record of every trade timestamped before the fact, held where the trader cannot edit it.