A/B test anything in WordPress. No code.
Duplicate a block, run the test, and ship the winner inside the editor: server-side experiments and Bayesian results, no external testing stack.
- Duplicate any block to create a variant, edited visually
- Probability-to-win you can read at any moment: no fixed sample size
Free up to 1 million tracked page views a month. No credit card.
Variant A
Variant BWorks on any WordPress host, including:
From idea to winner in three steps.
No external tools, no tracking scripts to install. If you can edit a page, you can run a test.
| Variant Name | Conversion Rate | Improvement | Probability to be Best | + Add blank variant | |
|---|---|---|---|---|---|
EDITING | Variant A | 3.10% | 4% | ||
| Variant B | 3.78% | 21.9% | 96% |
Duplicate a block
Turn any block into a test, then duplicate it to create a variant. Edit it visually: headline, CTA, image, or the whole layout.
| Variant Name | Conversion Rate | Improvement | Probability to be Best | + Add blank variant | |
|---|---|---|---|---|---|
EDITING | Variant A | Collecting data... | |||
| Variant B | Collecting data... | |||
Run the test
Publish. Accelerate splits traffic, renders each variant server-side, and tracks conversions automatically.
The conversion rate was 3.78%, 21.9% higher than the original.
The winning variant will be shown to everyone, you can also convert the block to a standard Synced Pattern using the winning variant using the sidebar controls.
| Variant Name | Conversion Rate | Improvement | Probability to be Best | + Add blank variant | |
|---|---|---|---|---|---|
EDITING | Variant A | 3.10% | 4% | ||
| Variant B | 3.78% | 21.9% | 96% |
Ship the winner
Bayesian statistics call the winner the moment the evidence is clear. Promote it in one click, or let it auto-declare.
Test titles and featured images, right on the page.
Some tests do not need a duplicated block. Run a title or featured-image experiment straight from the post itself, watch the numbers in the page HUD, and promote the winner without leaving the editor.
| Variant | Title | Views | Conversion Rate | Improvement | Probability to be Best | Preview |
|---|---|---|---|---|---|---|
| Variant A (original) | Quiet coastlines, considered stays. | 4,212 | 4.6% | — | 4% | |
| Variant B | The sea is better in person. | 4,198 | 5.9% | +27.9% | 96% |
Test any block without touching code.
A/B testing lives where you already work: inside the block editor. Duplicate a block, change what you want, and Accelerate builds the experiment for you. No developer, no external dashboard, no copy-pasted snippets.
- Works with any WordPress block, theme, or page builder
- Test headlines, CTAs, images, or an entire section layout
Variant A
Variant B
WinnerHomepage hero headline
A/B Test · Completed
Variant A
4.6%
Variant B
5.9%
Live test · 30 days
Variant winningRead the winner without statistical guesswork.
Bayesian statistics give every variant a live probability of being the best and a credible interval for the lift, readable at any moment, with no fixed sample size to wait out and no peeking penalty that breaks classic tests.
- Probability-to-win and 95% credible intervals, per variant
- Results update live: check them whenever you want
Promote the winner into live content.
Most tools stop at a report telling you which variant won. Then you copy the change back by hand. Accelerate writes the winner straight into the page: promote it in one click, or let it auto-declare, and the variant that won becomes the published content every visitor sees.
- The winning variant becomes the live block: no manual copy-paste
- Auto-declare at your threshold, or promote with one click
Live on the pageVariant B is now the live block — written straight into the page.
- staging.oursite.comvariantdocument120ms
- style.cssstylesheet18ms
- app.jsscript42ms
- hero.webpimage56ms
Keep performance intact while the test runs.
WordPress renders each variant itself, on the server, before the page reaches the browser. No external JavaScript overlay swapping content after load, no flash of the original, no extra tag slowing the page down.
- Zero content flicker: visitors see the variant instantly
- No third-party script and nothing to slow your Core Web Vitals
Everything in A/B Testing.
Bayesian statistics
Probability-to-win you can read any time, so you call a winner with confidence, not a guess.
Adaptive allocation
Traffic shifts to the leading variant as evidence builds, so you lose fewer conversions mid-test.
Auto-declare winners
Promote the winner once it clears your threshold, so wins ship without you watching the dashboard.
Server-side rendering
Variants render natively, no flicker or external overlay, so testing never slows the page down.
Native block variants
Duplicate any block to make a variant, edited visually, so anyone can launch a test without a developer.
Experiments dashboard
Every running and finished test in one place, so you always know what is live and what won.
Run your tests from your agentic terminal.
The Accelerate AI Toolkit turns your site into something you can talk to. Ask for a test: it plans the variant, applies your brand standards, creates it, and tells you when there is a winner.
/accelerate-testPlan, create, monitor & call tests/accelerate-optimize-landing-pageTurn a page’s data into a test/accelerate-evolveRun a multi-round optimization loop/accelerate-learnLearn from past test results
Claude Code v2.1.193
Opus 4.8 (1M context) with medium effort · Claude Max
● Connected to staging.oursite.com
›Set up an A/B test for my homepage hero.
⏺Reading the hero block and your brand standards…
⏺Created “Homepage hero”: 2 variants, 50/50 split, server-side. Publish?
›Yes.
⏺Live. I’ll tell you the moment there’s a winner.
›
Frequently Asked Questions
Everything you need to know about A/B testing in WordPress
One toolkit, not four plugins.
All featuresThe right message for each visitor.
Returning
Rotate campaigns, no deploy.
First-party traffic, native to WP.
Ask your data in plain English.
›Why did signups rise?
Returning visitors converted 27% better last week.
Start testing today.
Add Accelerate to WordPress and run your first A/B test in minutes: free, no credit card, no external tools.
Free up to 1 million tracked page views a month.