Ad experiments
Banner ad A/B testing that needs no cookies
Upload your banners, paste one tag where the slot goes and press Start. Privatus Analytics rotates the creatives, counts impressions, viewable impressions and clicks without cookies, leaves bots out and tells you which banner gets the most clicks.
No card required. Set up in 60 seconds.
Rotate banner ads from one tag
One script and one slot of the size you choose. The slot keeps its size while the ad loads, so the page never jumps.
Viewable impressions and clicks
An impression counts when the slot is shown, a viewable impression when half of the ad has been on screen for a second, the rule the ad industry uses.
The winner gets the traffic
A winner is called at the confidence you choose, and the slot can then show it to everyone. Or let more views go to the leader while the test runs.
Bots left out
Known bots and data centers are never counted or billed. On Pro and up, every view also gets a bot score, so you can count likely humans only.
House ads that promote your own offers
Most sites have room for an ad of their own, a trial in the docs sidebar, a newsletter under an article, a featured listing on a directory. Upload a few versions and the slot rotates them by the weights you set. When you want to know which one works, start an experiment on the placement. It works like the A/B tests of pages, with clicks in place of a goal.
Track banner clicks and impressions without cookies
The script sets no cookie, uses no local storage and reads no fingerprinting API. A creative is picked at random by its weight on every view, so nothing has to remember who saw what. What is kept is the creative, the time, the device, the country and the page, never an address or a visitor id.
- Impressions only for a slot the page shows, so a hidden mobile slot is never counted
- Viewable impressions by the IAB and MRC rule, half of the ad on screen for one unbroken second
- One click per visitor address and creative in ten minutes
- Every impression counts as an event toward your plan, and nothing else does
An automatic winner with a multi-armed bandit
Each creative is compared with the original on clicks per viewable impression, with the same statistics as a page test. Choose "Steer to the leader" and the shares move by themselves with Thompson sampling, the best known multi-armed bandit. Once a day, more views go to the creative most likely to be best, while every creative keeps at least a tenth of them. The docs explain the method in a few paragraphs.
Sell sponsor slots with a report link
On Pro and up, give a sponsor a link to a live report of their creatives, with impressions, viewable impressions, clicks and the click rate day by day. No account to make for them, and nothing about your visitors in it. Schedule a sponsor's creative for the weeks they booked, on the devices and pages they bought.
Device and page targeting, schedules and UTMs
A creative or a test can run on phones only, or on pages that match a pattern such as /tools/*. Start and end dates are checked in the visitor's browser, so a booking never starts late. Links get UTM parameters, so clicks to your own pages show up in Campaigns and your goals.
A self-hosted ad server alternative, without the ad server
Ad servers such as Revive, AdButler and Google Ad Manager are built to sell inventory to many advertisers, with cookies and consent banners to match. If you only need to rotate your own creatives and sponsor slots and know which one works, Privatus Analytics does that in the analytics you already use, with bot detection built in. The docs show every setting.
Privacy by design
No cookies, no fingerprinting, no profiles. IP addresses are used in memory and never stored.
Start free, upgrade when you grow
Your first workspace gets 14 days of Pro, with no card. After that, stay on Free or pick a plan.
Business
From $49 a month
250k events a month
For agencies, larger teams and security requirements.
Questions and answers
What are house ads?
Ads a site shows for itself or for its sponsors in its own slots, such as a trial offer in a sidebar or a featured listing on a directory, instead of ads bought through an ad network.
What is a viewable impression?
An impression where at least half of the ad was on screen for one unbroken second, or 30% for a very large ad. It is the rule of the IAB and the Media Rating Council, and the number click rates are compared on.
Should I compare impressions or viewable impressions?
Viewable impressions. An ad below the fold that nobody scrolled to can't be clicked, so counting it would make a creative look worse for where it was shown, not for what it says.
How do I track banner clicks without Google Analytics?
Paste the slot's tag on your page. Privatus Analytics counts every impression, viewable impression and click of each creative, with no cookie, and adds UTM parameters to the link so the visit that follows is attributed too.
How long should a banner A/B test run?
At least a week, so weekdays and weekends are both in it, and until each creative has the viewable impressions you set (1,000 by default). The experiment won't call a winner earlier.
What is a banner rotator?
A script that shows a different banner from a set on each page view, by weights you choose. Every placement in Privatus Analytics is one, with schedules and targeting on Pro and up.
Do ad impressions count toward my plan?
Yes. Each impression is an event in your monthly allowance, like a pageview. Viewable impressions and clicks are not counted again, and bots are never counted.
Can I track ads without a cookie banner?
The script stores nothing in the visitor's browser and keeps no identifier, so there is nothing to ask consent for. As with any measurement, check what your own legal advice says for your site.
Start free in 60 seconds
Add one script tag and see your first visitor within seconds. Free for your first 10k events a month.
No card required. Set up in 60 seconds.