No bloated visual editors. No layout-breaking scripts. Just pure, server-side power for your Landing Page redirects.
We’ve all been there: You use a "Drag-and-Drop" editor to move a button. It looks great on your desktop. Then you launch, and your mobile layout explodes.
"I spent 3 hours 'fixing' a headline in Optimizely's visual editor, only to find out it caused a 2-second layout shift (CLS) that tanked our Google rankings. Never again."
— Senior Growth Engineer @ Series B SaaS
We don't "edit" your code. We split your traffic. You build the variant in your own tools; we ensure the right user sees the right link. 100% Integrity. 0% Lag.
Legacy tools use clunky methods to "live-edit" your site, causing lag and broken layouts. AB Split Kit handles everything at the link level for 100% rendering integrity.
Don't "tweak" your site in a browser window. Build your variants in your native CMS or landing page builder, and we'll split the traffic between them with millisecond precision.
Because we don't inject CSS or modify your HTML on the fly, your variants load exactly as they were designed. No "flash of original content," ever.
Eliminate flicker. Assign variants server-side before the browser renders for pure, untainted data.
Unique, unguessable entry links for email and ads. Log impressions before the user even hits your site.
Precise traffic splitting logic that respects your exact percentages for control and test variants.
Maintain visitor assignments for 30+ days using 1st-party cookies that survive modern browser blocks.
Intelligent tracking that prevents server-side and JS-side triggers from double-counting the same visit.
Automatically carry UTMs and tracking parameters from source to destination without losing attribution.
Call winners faster with "Probability to be Best" metrics powered by Monte Carlo simulations.
High-resolution time-series visualizations of impressions and conversions via Chart.js integration.
Deep-dive into specific marketing windows with flexible filtering and goal-specific analysis.
Toggle views between different goals (Signups vs. Purchases) within a single experiment view.
Live calculation of conversion percentages per variant based on unique visitors and raw events.
Soft-delete experiments to keep the dashboard clean while preserving historical data integrity.
A 2.4kb script handling client-side assignment, local storage, and 1st-party vid syncing.
Track conversions via URL matches, parameter presence, or the state of specific JS variables.
Auto-generated code snippets to fire custom conversion events directly from your application logic.
Pass Visitor IDs from customer sites to the AB server to bypass 3rd-party cookie blocking in Safari.
Lock experiments to specific domains (e.g. app.yoursite.com) for secure environment control.
Deploy experiments site-wide using flexible URL pattern matching like /blog/*.
Optimizely and VWO are great for beginners who want to change button colors with a mouse. But for high-volume scaling, their "Visual Editors" inject heavy JS that slows your site and breaks your tracking.
vid sync stays sticky for 30+.
One flat rate for the full technical stack. Scale based on your monthly traffic.
vid Syncing