What is a Landing Page Test?
A landing page test is a one-page website that describes your product as if it already exists, with one button that asks the visitor to do something: leave an email, join a waitlist or put down a deposit. You send real strangers to the page and count how many take that step. The product behind the button does not exist yet, and that is the point: you find out whether the promise pulls people in before you spend months building.
Two terms you will see below. The call to action (CTA) is the one button or form you want people to use. The sign-up rate (also called conversion rate) is sign-ups divided by unique visitors. A page with 200 visitors and 18 sign-ups has a 9% sign-up rate.
When should you use it?
Use it once you have done some problem interviews and can describe the problem in your customers’ own words. It fits:
- Apps, software and online services where a page is how people would discover you anyway.
- Physical products you can show with a sketch, a 3D render or a photo of a handmade sample.
- Local services (cleaning, tutoring, meal delivery) where a page plus a booking request is a realistic first contact.
Skip it when your buyers never land on web pages before buying, say large companies that buy through procurement after a sales call. A letter of intent tells you more there. Also skip it if you cannot reach at least 100 people from your target group in two weeks: the numbers will be too small to read.
How do you do it, step by step?
-
Write the promise in one sentence. Use this frame: “[Result] for [specific person] without [the hassle they live with today].” Pull the hassle word for word from your interview notes. “Weekly meal plans for shift nurses without cooking after a 12-hour night” beats “Healthy eating made easy” every time.
-
Pick a call to action that costs the visitor something. An email address is the cheapest commitment. Asking for an email plus one question (“What do you use today?”) filters out the polite clicks. A refundable deposit of €5 to €20 is the strongest signal you can get from a page. Choose one; two buttons split your numbers.
-
Build the page in one afternoon. Six blocks, top to bottom: headline (the promise), three lines on the problem, “how it works” in three steps, the price or “from €X”, the CTA, and a short FAQ that answers “Does this exist yet?” honestly. Carrd is the fastest builder for this. Its free plan publishes a site on a carrd.co address; built-in forms and a custom domain come with the Pro Standard plan, which costs $19 per year. On the free plan, point your button at a free Tally form instead.
-
Add tracking before anyone visits. Install Microsoft Clarity or Google Analytics so you can count unique visitors. Give each traffic source its own link with UTM tags (UTM stands for Urchin Tracking Module, the little labels after a question mark in a URL):
?utm_source=facebook,?utm_source=newsletter. Without this you will not know WHICH audience said yes. -
Send 100 to 300 real visitors. Our rule of thumb: three sources, each bringing at least 50 people. Post in two communities where your customer already hangs out and send the link to anyone from your interviews who asked to stay updated. A community post that works: “I’m testing an idea for [person] who struggle with [problem]. I put up a page describing how it would work. Would love to know if it’s useful or if I’ve missed something: [link].” A small paid test of €30 to €50 on one ad platform also works when communities are closed to links.
-
Reply to every sign-up within 24 hours. One short email: “Thanks for signing up. Quick question so I build the right thing: what made you click today?” The replies are worth more than the counter. People who answer are your first candidates for a pre-sale offer.
-
Read the numbers by source. Put visitors, sign-ups and rate per source in a Google Sheet. A 15% rate from your own friends and a 2% rate from strangers tells a very different story than the blended 6%.
What does a worked example look like?
Say Lena wants to sell a monthly box of ready-to-plant herb seedlings for apartment balconies in Rotterdam. Her promise: “Fresh herbs on your balcony every month, without killing another basil plant.” The page shows a photo of a sample box she put together at home, three steps (choose herbs, get the box, plant in 10 minutes) and “€14 per month, cancel any time”. The CTA: “Reserve your first box with a €5 deposit”, with an email-only option below it.
Over 12 days she gets 240 visitors: 110 from a local Facebook gardening group, 80 from her Instagram, 50 from a neighbourhood newsletter. 31 people leave an email (12.9%) and 6 pay the deposit. The gardening group converts at 18%, Instagram at 5%. Her follow-up email teaches her something the page never could: four of the six depositors want the box as a gift. So the next test is a gift version of the same page.
Which free tools help?
| Tool | What you use it for | Free plan |
|---|---|---|
| Carrd | Building and hosting the one-page site | Yes, on a carrd.co address |
| Tally | Email or waitlist form linked from the button | Yes, unlimited forms and submissions |
| Microsoft Clarity | Visitor counts, scroll depth, session recordings | Free |
| Google Sheets | Logging visitors, sign-ups and rates per source | Free with a Google account |
| Canva | Product mockups and header images | Yes, with paid extras |
What mistakes should you avoid?
- Testing on friends only. Friends sign up to be kind. Count them separately or leave them out.
- A clever headline. If a stranger cannot repeat what you sell after five seconds, the test measures confusion.
- Hiding the price. A page without a price measures curiosity. Even “from €9 per month” makes the click mean something.
- Changing the page halfway. Every edit resets the test. Change one thing, then start counting again.
- Stopping at 40 visitors. Two sign-ups more or less swing the rate by five points. Wait for 100 per version.
How do you know it worked?
Our rule of thumb for cold traffic (people who do not know you): an email sign-up rate above 10% is a strong start, 4% to 10% means the problem is real and the page needs work, and below 3% means the promise or the audience is wrong. For deposits, 2% of visitors paying is a clear go.
Go when strangers sign up at a healthy rate AND at least a handful answer your follow-up email with a specific reason. No-go when only friends convert or nobody replies.
What should you do next?
If the page works, ask for real money with a pre-sale offer or test two prices with price testing. If visitors bounce, try showing the product in motion with an explainer video test. The Fe/male Switch startup game walks you through building and reading a test page like this with an AI co-founder that checks your numbers.
FAQ
How many visitors do you need for a landing page test?
Aim for 100 to 300 unique visitors from your target group. Below 100, a couple of sign-ups move the rate too much to trust. If you test two versions, get at least 100 per version.
Is it honest to describe a product that does not exist yet?
Yes, as long as you never pretend it ships today. Say “launching soon” or “join the first group”, and if you take deposits, promise a full refund and give a date. People are fine with early access when you are clear about it.
Should I use a free subdomain or buy a domain?
A free carrd.co or similar address is fine for a first test, especially in communities. Buy a domain when you run paid ads or test with business buyers, since a custom address looks more trustworthy and costs little.
Updated 26 October 2026 · Written by the Fe/male Switch team