What is web personalization
Web personalization means showing each kind of visitor a version of your website adapted to them, based on where they come from, which country or device they use or whether they already know you. The page is the same; what changes is the message, the offer or the order of what they see.
By Fernando Blanco Dosil · Updated November 2, 2026
Why it works
Someone arriving from an Instagram ad for a specific pair of trainers is not looking for the same thing as someone who typed your brand into Google. If both see the same generic homepage, one of them has to work to find what they wanted, and many won't bother.
Personalizing takes that work away. You don't need a different site for each person: adjusting two or three things for the groups that matter most to your business is enough.
Common examples
Most personalizations that pay off are simple. These are the most common in online stores.
- By campaign or UTM: visitors from the sale ad see the sale banner at the very top, with the same message as the ad.
- By country: shipping costs and delivery times for the visitor's country, or a notice if you don't ship there.
- By device: on mobile, a sticky buy button and a shorter product page; on desktop, the size chart in plain sight.
- New or returning: new visitors get the returns guarantee and reviews; returning ones get what they looked at last time or an offer for their second order.
Rules or AI
Two ways to decide what each visitor sees.
| Rules | AI | |
|---|---|---|
| How it decides | You define the rule: if they come from this campaign, show this | A model picks what to show each visitor based on their behaviour |
| Control | Full, you know what each person sees and why | Less, the decision depends on the model |
| Data it needs | Little, knowing where the visitor comes from is enough | A lot, so the model can learn |
| When it fits | Almost always, and always to start with | High-traffic sites with large catalogues |
Personalization versus A/B testing
An A/B test splits visitors between two versions to find out which works better. A personalization shows a specific version to a specific group. They are different things, but they work well together.
The typical mistake is to personalize and assume it helps. Making sense is not the same as selling more: a sale banner for campaign traffic can push the product below the fold on mobile and lower sales. The sensible move is to measure the personalization against the original, within that same audience, before keeping it for good.
How Bixlow handles it
In Bixlow, personalizations are built on audiences: named, reusable rules about the visitor, such as UTM parameters, country and region (taken from the connection, not the browser), device, new or returning, or your own attributes your site sends with window.bixlow.identify(). You can publish a personalization directly to an audience or measure it against the original with an A/B test in that same audience.