Know what your testing program is teaching you
Introducing Program: a view of your whole experimentation program, not just the tests running today.
What’s new
News, announcements and everything we ship
Company news, platform announcements and the release notes, in the order they happened. Older notes are kept as they were written.
14 noteslatest 19 Oct 2026RSS
19 Oct 2026Product updates
Say hello to the new AI editor
We've been looking forward to this one. The Pertento AI editor is live, and it changes how you build A/B tests. Until now, building a variant meant clicking through elements, hunting for selectors, or waiting for a developer to find time. You had the idea. Getting it onto the page was the slow part.
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Earlier notes
Ask why. Automate what’s next. Meet the new Pertento
Pertento now tells you why visitors behave the way they do, runs your testing roadmap for you, and brings it all together in a completely redesigned platform. Surveys and Pipelines are now in beta
Kustom Partners with Pertento
We are excited to announce a new partnership with Kustom, one of the leading checkout and payment providers in the Nordics.
Beyond 'which one won?' Meet the new Pertento CRO Suite
Every A/B tool tells you a number. The new Pertento tells you whether to trust it, why it happened, and what to ship next.
Pertento acquires Stockholm-based CRO agency
Pertento acquires Stockholm-based CRO agency, expanding into full-service experimentation.
Pertento and Qliro partner to bring data driven payment evaluation to e-commerce
Pertento and Qliro have partnered to bring controlled A/B testing to payment provider evaluation. Merchants can now test Qliro directly against competing checkout solutions and measure the real impact on conversion, revenue, and checkout performance.
New Editor UI Launched
We’ve launched a new version of the Pertento visual editor with a cleaner interface and improved editing flow.
Pertento Reaches a New Performance Milestone
We are gradually rolling out a major performance update to the Pertento runtime, reducing script weight from an already small 14 KB to just 0.5 KB.
The Scientific Foundations of Conversion Rate Optimization
Conversion Rate Optimization is not a collection of superficial tactics. It is a discipline grounded in statistics, causal inference, and behavioral science.
Why Most A/B Tests Fail and How to Fix Them
A/B testing sounds straightforward. Change something, send traffic to both versions, wait for the result. In practice, most tests fail long before they reach significance
The True Cost of Bad Experimentation
Most teams understand the value of A/B testing. Fewer understand the hidden cost of doing it poorly.
How to Design a High-Quality A/B Test: A Practical Framework
A solid A/B test is a bit like plotting a course at sea. You need a clear direction, reliable instruments and enough discipline to trust the data even when the waves look tempting.
Running A/B Tests on Low-Traffic Sites: What Actually Works
A lot of teams assume A/B testing only works if you have huge volumes of traffic. It helps, of course, but low-traffic sites can still run effective experiments.
Every note is kept as it was written. Breaking changes are announced in the console a fortnight before they ship.