A/B testing links & URL rotator

Between 2 and 10 destination variants on a single short link, labeled A–J. Two variants is a classic A/B test; three or more is an A/B/n test.

Each variant gets an integer weight, and all weights add up to 100 — so a weight is simply the percentage of clicks that variant receives. Set 60/40 and roughly 6 of every 10 visitors go to A, 4 to B. Each click picks a destination at random in proportion to its weight, so the split converges to your percentages as volume grows.

Every variant is tracked separately, so compare clicks (and conversions, if you track them) per variant. Give the test enough data — a common rule of thumb is at least ~1,000 clicks and ~7 days — and don't call it early. When one variant clearly leads, raise its weight to send it more traffic. No new link needed.

Not quite. On-page tools like Optimizely and VWO swap elements inside one page — a headline or button — and compute statistical significance. An A/B testing link tests entire destinations against each other by splitting the traffic and measuring each variant's clicks. It's simpler and needs no code on your pages; pair it with your own conversion goal if you need on-page significance testing.

They're the same feature under different names. Marketers say 'A/B testing link' — the goal is finding the best-converting page. Affiliates and media buyers say 'URL rotator' or 'link rotator' — the goal is distributing traffic across offers. One U2L link does both.

Yes. Point one link at multiple offers and weight them however you like — rotate to beat ad fatigue, round-robin to respect a network's click caps, or load-balance across mirror storefronts. Check your affiliate program's terms, as some restrict direct rotation.

Yes. A dynamic QR code re-resolves the short link on every scan, so scans are split across your variants just like clicks — and because the destinations are separate from the printed code, you can A/B test or swap offers without reprinting.

Yes — edit destinations and adjust weights live, and the short link (and any QR code) stays the same. That's how you ramp traffic to a winning variant.

By default each click is assigned independently, so a returning visitor may see a different variant. Rotation uses a temporary (302) redirect specifically so it can re-decide each time — a permanent redirect would cache and lock one destination.

Two separate links means splitting your audience by hand and comparing two dashboards. An A/B testing link is one link, one QR code, and one report that splits traffic automatically and shows each variant side by side — and Bitly and Rebrandly don't offer native traffic-splitting at all.