A client published text posts for fourteen months. Narrow lane, roughly 5,000 members reached per post, twelve to twenty comments, two or three inbound conversations a month that turned into calls.
He went to a conference in July. Three people told him the same thing: the algorithm is pushing video, you're leaving reach on the table. He came back and switched. Four weeks of video, nothing else.
His reach went up. Members reached climbed to around 7,000. Comments fell to three or four. Inbound went to zero.
He messaged us in week five to ask whether we'd changed something about the writing.
We hadn't. He'd paid the format tax, and nobody had told him it existed because the advice he got was technically correct and pointed at the wrong number.
Each format is graded on a different signal
This is the part almost nobody says out loud, and it's the whole mechanic.
LinkedIn does not evaluate every post with one scoring function. Reporting on the 2026 feed is consistent on this point: text posts are assessed largely on dwell time and comments, document carousels on swipe-through, video on watch time. Different formats, different currencies.
So when you switch formats, you are not just asking the distribution system to re-learn a preference. You are changing what you are being scored on.
That matters more than it sounds. A founder who has spent a year building content that reliably produces comments has spent a year optimising for one currency. The posts are dense, specific, arguable. Operators read them slowly and disagree in the comments, which is exactly the behaviour that was buying the distribution.
Move that same material to video and none of that machinery applies. The comment that used to power the post is now a weaker signal than a stranger watching to the end. And the founder's material — a return-code finding, a landed-cost derivation, a spec that changed in March — is not material that anybody watches to the end.
He didn't get worse. He entered a competition he'd never trained for.
This is not the off-lane tax and the fix is different
We've written before about what happens when you post outside your subject: the distribution system holds a topic profile for your account, an off-lane post gets served to the wrong room, the weak result feeds back, and the next few posts start from a slightly worse position.
The format tax is a separate axis and it's important not to confuse them. In the off-lane case you changed the subject and the room was wrong. In the format case the subject is identical, the room is the same room, and the measurement changed underneath you.
They also recover differently. Off-lane recovery is re-confirming a topic the system half-remembers — a few weeks of publishing back inside the lane. Format recovery is not a relearning problem at all. It's a question of whether the format you moved to can produce the signal your business actually runs on. If it can't, waiting doesn't fix it.
Honesty guard: LinkedIn publishes no weighting for any of this. Nobody outside the company can tell you what a format switch costs as a percentage, and if someone hands you a number for it, they made it up. What is not in dispute is that the signals differ by format. That alone is enough to act on.
Your room is wrong for watch time, and it's wrong on purpose
Here's the second cost, and it's specific to the people we work with.
A narrow-lane ecommerce founder is read by operators. Brand owners, heads of ops, agency leads, 3PL people, buyers. They read on a phone, at 11pm, with the sound off, between two other things. That is the audience you built deliberately, and it is a very good audience — it is the audience that sends DMs and books calls.
It is also structurally the worst possible audience for watch time. Sound off, short sessions, low tolerance for a fifty-second preamble. The behaviour that makes them valuable to your business is the behaviour that makes them cheap to the video scoring.
So the founder above wasn't just competing on a new signal. He was competing on a new signal with an audience specifically assembled to underperform on it.
The advice he got at the conference — the algorithm is pushing video, you'll get more reach — was accurate. LinkedIn has reported multiple consecutive quarters of double-digit growth in video uploads, the platform is clearly investing there, and video does pull more raw reach than text for most accounts. His members reached went up by roughly 40%. The advice delivered exactly what it promised.
It just delivered it in a currency he doesn't spend.
Reach is not the thing your pipeline runs on
We've made this point in a different context and it applies here with more force.
For a founder in a narrow lane, comments are not a vanity metric — they are a distribution mechanism. A comment from a credible adjacent operator puts your post in front of that operator's network, which frequently doesn't overlap with yours. A save is a bookmark from somebody who intends to act. A DM is the pipeline.
Video bought him 2,000 more members reached. It cost him roughly fifteen comments a post, which is fifteen chances at a second distribution curve and fifteen conversations that didn't start.
Nobody reports it that way. The analytics tab shows impressions and members reached in large type at the top, and the number went up, so the founder's own dashboard told him the switch was working for four weeks while his inbound went to zero.
The cost nobody prices: cadence
There is a second, entirely non-algorithmic cost, and in our experience it does more damage than the signal problem.
A text post built off a voice sync is roughly 25 minutes of founder time. A video is a decision about what to wear, a room that isn't loud, three takes, a review, a re-record because the first one had a stumble in the opening line, and a caption pass.
Founders who switch formats almost always cut cadence at the same time, without deciding to. Two a week becomes one a week becomes one a fortnight, because the production cost quietly went up by a factor of five.
And cadence is the thing holding the topic profile in place. So the founder who switches format frequently pays the format tax and the consistency cost at once, then attributes the whole result to the algorithm.
Don't switch. Add.
The fix is unglamorous and it is the same fix every time.
Keep the cadence you hold in the format you're strongest in. Add the new format as a supplement, not a replacement. One video a fortnight alongside two text posts a week, for a quarter. You are not asking the system to relearn anything — your primary signal keeps producing while a second one gets tested.
Three rules that make the addition worth doing:
Put your genuinely visual material in the video slot, and only that. This is where ecommerce founders have an unfair advantage that most of them waste. You have things to show. The return pile. The two heroes side by side in a real search grid on a phone. The pallet that arrived wrong. The frame you shot and the frame you shipped. A founder explaining a mechanism to camera is a talking head competing with every other talking head. A founder holding two versions of the same product and pointing at the difference is content nobody else in your category can produce.
Keep the format matched to the job. Judgment, mechanism and derivation belong in text, because the reader wants to move at their own speed and stop to argue. Comparison, physical evidence and anything with a before and an after belongs in video.
Grade the run, not the post. Six weeks minimum, and grade it on the metric that maps to your pipeline, not the one at the top of the dashboard.
The ten-minute audit that gives you your own answer
You don't need a benchmark for this and you shouldn't want one. Your own account is the control group.
- Open your last 20 posts. Two columns: format and comments.
- Add a third column: members reached.
- Work out comments per 1,000 members reached, by format.
That single ratio tells you what each format is buying you specifically, in your lane, with your audience. Most founders who run this find their text posts reach fewer people and convert those people into conversation at two to four times the rate.
If your video ratio matches your text ratio, video is working for you and you should do more of it. If it's a third of it, you now know exactly what the reach increase cost, and you can decide whether you want to keep buying it.
FAQ
Is video just better on LinkedIn in 2026? For raw reach, on most accounts, yes — and that's what the advice is based on. Whether it's better for you depends entirely on whether reach or conversation is the constraint in your business. A founder with 400 followers and a new lane should probably chase reach. A founder with a narrow, well-built audience of operators is rarely short of reach. He's short of the next conversation.
Does switching to document carousels count as the same problem? Same mechanic, smaller bill. Carousels are assessed largely on swipe-through, which is closer to the dwell-and-read behaviour your text audience already has. We see less disruption moving text to documents than text to video, and documents are genuinely strong for anything with a sequence or a comparison in it.
Can I run both formats in the same week? Yes, and it's better than alternating weeks. What you want to avoid is a clean break — a month of one format followed by a month of another. That's the version that costs you, because your strongest signal goes dark for a full learning cycle.
I hate being on camera. Am I leaving money on the table? Almost certainly not as much as you think, and the founders who force it produce visibly uncomfortable video that performs worse than their text. If you want the format without the camera, shoot the product, not yourself — screen recordings, a phone pointed at a real search grid, two units on a desk. Most of the video that works for ecommerce founders has no face in it at all.
I switched three months ago, reach is fine and nothing is coming in. What now? Go back to the format you were strongest in for four consecutive posts before you change anything else. Don't announce it, don't do a bigger swing, hold your cadence, and grade the run at six weeks. In most cases the specificity comes back with the format, because the founder was writing differently for video without noticing — shorter, broader, more general. That's usually the bigger half of the problem.
We run this audit for every client at month three and again at month nine, because the pressure to switch formats never goes away — it arrives at every conference, from every well-meaning peer, and it is always framed as something the algorithm wants.
The algorithm wants a lot of things. Your pipeline wants one. If you want a second pair of eyes on which format is actually buying you conversations, get in touch — we'll run the ratio on your last twenty posts and tell you what we find.