by Guillaume Ferrari 1 (0 reviews)

Variolab – A/B Testing

Name: Variolab – A/B Testing
Author: Guillaume Ferrari

A/B test WordPress pages or AI-generated HTML landings. Internal tracking, 50/50 cookie split, GDPR-friendly, no third-party dependency.

Variolab ranks #61,171 among WordPress.org plugins with 1+ active installations, is #1,105 of 1,978 in the Analytics category, a 1/5 rating from 0 reviews, and was last updated Jun 15, 2026. Data from WordPress.org, refreshed twice daily — see methodology.

Tested up to WP 7 (Current: 7.1)

v0.20.1 Current Version v0.20.1

Updated 3 months ago Last Update on 15 Jun, 2026

Refreshed 9 hours ago Last Refreshed on

#1,105 of 1,978 in Analytics

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Rank

#61,171

— No change

Active Installs

-80%

KW Avg Position

114.5

1 better

Downloads

469

+1 today

Support Resolved

— No change

Rating

20%

Review 1 out of 5

1 (0 reviews)

Next Milestone 10

Total Progress 20%

0+ 10+

60,459

Ranks to Climb

Growth Needed

8,000,000

Active Installs

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Rank Changes

Current #61,171

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Active Installs Growth

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Active Installs 0,000,000+

Growth +0.0%

Peak 0,000,000

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Reviews & Ratings

1.0

0 reviews

Overall 20%

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Plugin Details

Version: 0.20.1
Last Updated: Jun 15, 2026
Requires WP: 6.0+
Tested Up To: 7
PHP Version: 8.1 or higher
Author: Guillaume Ferrari

Support & Rating

Rating: ★ ☆ ☆ ☆ ☆ 1
Reviews: 0
Support Threads: 0
Resolved: 0%

Keywords

a/b testing conversion html import landing page split testing

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Frequently Asked Questions

Common questions about Variolab – A/B Testing

On their first visit to the control page, a cookie abtest_{experiment_id} is set with value a or b. Subsequent visits read that cookie — the visitor always sees the same variant.

No. Logged-in users with edit_posts capability are bypassed and always see the control. The admin bar shows a marker indicating which experiment is running on the page.

Always use the Update action — Plugins → Installed Plugins → Update, or wp plugin update variolab-ab-testing on the command line. Do not delete the plugin to reinstall a newer copy: deleting runs the uninstaller. As of v0.18.0 the uninstaller keeps your data by default (so an accidental delete no longer wipes your experiments, stats, page-import records, or settings), but the Update action is still the correct, cleanest way to upgrade. If you ever do want a full clean removal that erases everything, tick Delete all data on uninstall in Settings → Data & uninstall before deleting the plugin.

v1 only swaps the entire page (the variant must be a separate post). Block-level and product-level testing are on the roadmap. My conversions aren't recorded / I use a CDN or a cache (Cloudflare, Cloudways, SiteGround, Kinsta, WP Rocket…) A/B test pages must never be served from a cache. A cached page freezes one variant for every visitor (breaking the 50/50 split) and skips impression logging — so conversions get dropped. The plugin already sends no-store headers and auto-excludes test URLs from WP Rocket and LiteSpeed, but server-level and edge caches it can't control (Cloudways/Varnish, generic nginx caches, Cloudflare APO) may still cache the page. Two options: Exclude your test URLs from the cache (recommended). Add them to your host/CDN cache-exclusion list. Tip: give test URLs a common prefix (e.g. /lp/…) so one rule covers all of them. Step-by-step guidance for your host is shown in Settings → Caching & CDN. Turn on Cache-resilient mode (Settings → Caching & CDN). It forces a fresh render of test pages via a one-time redirect to a unique URL no cache can have stored — no cache config needed. Trade-off: a brief redirect on first paint and a query parameter on test URLs (consider noindex on those pages if SEO matters).