7 Best A/B Testing Tools for WordPress in 2026
Quick answer
For most WordPress sites, Mida is the best A/B testing tool in 2026. It has an official WordPress plugin, runs a ~15KB compressed script that loads in ~20ms without hurting Core Web Vitals, works with every major page builder — Elementor, Divi, Bricks, Gutenberg — and includes a free Sandbox plan up to 100,000 Monthly Tested Users. For teams who want all experiment configuration inside the WordPress admin, Nelio AB Testing is the best WordPress-native plugin. For Thrive Architect users building landing pages, Thrive Optimize is the natural fit. Enterprise teams should consider VWO or Convert Experiences for broader optimization suites.
Key takeaways
- WordPress A/B testing tools split into two types: WordPress-native PHP plugins that live in your WP admin (Nelio, Thrive Optimize), and lightweight external scripts that install via a snippet or plugin (Mida, VWO, Convert). Each architecture has different performance and workflow trade-offs.
- Script weight matters more on WordPress than on most other platforms. WordPress sites already carry theme, page builder, and plugin script overhead. Adding an A/B testing script that ships 100KB+ can push a previously-passing site past Core Web Vitals thresholds.
- WooCommerce stores should confirm that their chosen tool can track purchase and revenue events as experiment goals, not just clicks and page views.
WordPress is the most popular CMS in the world, and A/B testing on WordPress comes with a unique set of constraints: page speed budgets already stretched by themes and plugins, a wide range of page builders and hosting environments, and teams that often range from solo bloggers to large ecommerce operations running WooCommerce.
This guide compares seven tools that work on WordPress, organized by who they are actually built for. It covers both WordPress-native plugins that live inside your WP admin and external testing platforms that install via a lightweight script — and explains the performance, workflow, and pricing trade-offs of each approach. If you want a broader comparison that goes beyond WordPress, see our guide to the best A/B testing tools overall.
A/B testing tools for WordPress compared at a glance
Use this table as a shortlist builder. The detailed sections below explain when each tool is the right choice — and when it is not.
| Tool | Best for | WordPress install method | Starting price | Free option | Watch-out |
|---|---|---|---|---|---|
| Mida | WordPress and WooCommerce teams wanting lightweight, fast testing | Official WordPress plugin or script via WPCode | Free up to 100k MTU; $299/mo (annual) | Free Sandbox plan | Experiment dashboard is in Mida, not WP admin |
| Nelio AB Testing | WordPress teams who want everything inside WP admin | WordPress.org plugin | Free plan (500 page views/mo); paid from ~$29/mo | Free plan available | PHP-based: adds server-side overhead to every request |
| Thrive Optimize | Thrive Architect users testing landing pages | WordPress plugin (requires Thrive Architect) | $67/year (standalone) or $299/year (Thrive Suite) | No | Only works on pages built with Thrive Architect |
| VWO | Teams wanting testing plus heatmaps and recordings | Official WordPress plugin (visual-web-optimizer) or WPCode | ~$574/mo for 100k MTU (annual) | No (trial only) | ~127KB script can regress Core Web Vitals on WordPress |
| Convert Experiences | CRO agencies and technical teams | Official WordPress plugin (convert-experiments) or WPCode | $299/mo for 100k MTU (annual) | 15-day trial | No free ongoing plan |
| Crazy Egg | Small teams starting with heatmaps and basic tests | Official WordPress plugin (crazyegg-heatmap-tracking) or script | $99/mo for 150k page views | 30-day trial | Limited experimentation depth for advanced tests |
| Split Hero | WordPress-first teams and agencies wanting simple, flat-rate testing | WordPress plugin from splithero.com | From $29/mo (unlimited visitors) | 14-day free trial | Not on WordPress.org; experiment dashboard is outside WP admin |
Prices are approximate and subject to change. Always confirm current pricing on each vendor's website. User ratings sourced from G2, Capterra, and similar review platforms (2026).
WordPress A/B testing: two architectures to understand first
Before comparing tools, it helps to understand the two fundamentally different ways A/B testing tools work on WordPress — because the architecture determines performance behavior, workflow, and what you can and cannot test.
WordPress-native PHP plugins
Tools like Nelio AB Testing integrate directly with the WordPress CMS. They run in PHP on every page request, hook into the WordPress rendering pipeline, and serve variants server-side before the HTML reaches the browser. The upside is tight integration: you manage tests, goals, and results entirely within the WordPress admin you already know. The downside is that these plugins add PHP execution time and database queries to every page request, which shows up in Time to First Byte (TTFB) and compounds under high traffic. They also limit which pages can be tested to whatever WordPress generates.
Lightweight script-based tools
Tools like Mida, VWO, and Convert install a JavaScript snippet in the <head> of your WordPress pages. The WordPress site itself does not change — the script applies variation changes in the browser after the page loads. This means zero PHP overhead, no database writes per request, and compatibility with any WordPress setup regardless of theme, page builder, or hosting. The trade-off is that the experiment dashboard lives outside WordPress admin, and the anti-flicker implementation matters: a poorly engineered script can cause a visible flash of the original content before the variant appears. Script weight also varies significantly between tools — from ~15KB (Mida) to ~127KB (VWO) — which affects performance on WordPress sites that already carry heavy theme and plugin scripts. We published a full A/B testing tool speed benchmark if you want the numbers.
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Quick recommendations by team type
WordPress marketing and WooCommerce teams
Choose: Mida
Why: Official WordPress plugin, ~15KB script, free Sandbox up to 100,000 MTU, GA4 integration, and WooCommerce revenue tracking — without touching your site's performance budget.
Teams who want everything inside WP admin
Choose: Nelio AB Testing
Why: Fully WordPress-native — tests, variants, goals, and reports are managed inside the WordPress admin without a separate dashboard.
Thrive Architect landing page builders
Choose: Thrive Optimize
Why: Built to work alongside Thrive Architect, making landing page A/B tests a natural extension of the page-building workflow.
CRO agencies managing WordPress client sites
Choose: Mida or Convert Experiences
Why: Both work across any WordPress setup, support multiple client workspaces, and provide the technical control and QA workflows CRO agencies need.
Teams wanting heatmaps alongside testing
Choose: VWO or Crazy Egg
Why: Both combine session recordings, heatmaps, and A/B testing in one platform — useful when you want behavioral research and testing in a single subscription.
WordPress-first agencies and freelancers
Choose: Split Hero
Why: Built exclusively for WordPress, flat-rate pricing (unlimited visitors), works with all page builders, and supports unlimited guest accounts for client collaboration.
1. Mida
Mida is a lightweight A/B testing and website experimentation platform with an official WordPress plugin. It runs a ~15KB compressed script that loads in approximately 20ms — one of the lightest A/B testing scripts in the category — and works identically across every major WordPress page builder: Elementor, Divi, Bricks, Gutenberg, and classic PHP themes. Tests are built in Mida's no-code visual editor or generated by MidaGX from plain-English prompts.
Unlike WordPress-native PHP plugins, Mida adds no server-side overhead to your WordPress site. The script installs once — either through the official WordPress plugin, a header-insertion utility like WPCode, or through your theme's built-in header code field — and experiment configuration happens in the Mida dashboard. This means static HTML caching from WP Rocket or WP Super Cache continues to work correctly, because every visitor receives the same cached HTML and Mida applies the variation client-side after load.
If your site runs WooCommerce, the plugin automatically tracks when shoppers add items to cart, start checkout, and complete orders — including the order value. All of this shows up in Mida as conversion data you can tie to your experiments, so you can see exactly which variant is driving more purchases and revenue.
Pricing: Mida has a free Sandbox plan up to 100,000 MTU with no credit card required. Growth starts at $399/month billed monthly, or $299/month billed annually.
User rating: 4.7/5 across G2 and Capterra.
Key features for WordPress:
- Official WordPress plugin on WordPress.org — one-click install, no code required
- Works with Elementor, Divi, Bricks, Gutenberg, and any classic PHP theme — operates on the rendered DOM regardless of page builder
- ~15KB compressed script with optional anti-flicker (configurable timeout and grace period in the plugin settings)
- Compatible with WP Rocket, WP Super Cache, and other caching plugins — no cache conflicts
- WooCommerce support built in — automatically tracks add-to-cart, checkout, and completed orders with revenue, so you can measure which variant drives more sales
- Visual editor for no-code variant creation and MidaGX for AI-generated variants from plain text
- Free Sandbox plan: 100,000 MTU per month, no credit card, no forced upgrade
Choose Mida when:
- You want A/B testing on WordPress without adding PHP overhead, database queries, or performance regressions.
- Your WordPress site runs WooCommerce and you need ecommerce revenue tracking as an experiment goal.
- You use multiple page builders across your site and need a testing tool that works identically on all of them.
- You want a generous free tier before committing budget, or you are replacing Google Optimize.
- You manage multiple WordPress client sites and need a single testing platform that works across all of them.
Avoid Mida when:
- You specifically need experiment configuration inside the WordPress admin rather than a separate dashboard.
- Your main experimentation surface is native mobile apps or backend-only server-side logic.
2. Nelio AB Testing
Nelio AB Testing is the most feature-complete WordPress-native A/B testing plugin available. It integrates entirely within the WordPress admin — creating tests, managing variants, setting goals, and reviewing results all happen inside the familiar WordPress interface without a separate SaaS dashboard. It is built and maintained by Nelio Software, a WordPress VIP Technology Partner.
Nelio can test pages, posts, custom post types, WordPress patterns, themes, menus, widgets, CSS, JavaScript, PHP, and WooCommerce products. Because it runs in PHP on the server, variants are rendered before the HTML reaches the browser — which means no client-side flicker, but also additional PHP execution time and database queries on every tested page request. For most WordPress sites on managed hosting, this overhead is manageable; on high-traffic sites or shared hosting with strict performance constraints, it is worth benchmarking.
Pricing: A free plan is available (limited to 500 tested page views per month and one active test). Paid plans start at a low monthly rate for 5,000 monthly tested page views (Basic), scaling to 50,000 (Professional) and 200,000 (Enterprise). Visit Nelio's pricing page for current rates. Session recordings and Nelio AI are available as add-ons.
Key features for WordPress:
- Fully WordPress-native: create and manage tests inside the WordPress admin without a separate dashboard
- Tests pages, posts, custom post types, themes, menus, widgets, WooCommerce products, CSS, JavaScript, and PHP
- Server-side variant rendering — no client-side flicker
- Heatmaps, scrollmaps, and click maps built in
- WooCommerce product testing including price, descriptions, and images
- Nelio AI for experiment suggestions and analysis (add-on)
- WordPress VIP Technology Partner — vetted for performance, security, and scalability
Choose Nelio AB Testing when:
- You want all testing configuration, variant management, and reporting inside the WordPress admin.
- Your team is WordPress-first and does not want to learn a separate SaaS dashboard.
- You need to test WordPress-specific elements: themes, menus, widgets, custom post types, or WooCommerce products at the product level.
- You want a free plan to validate A/B testing before paying.
Avoid Nelio AB Testing when:
- You run a high-traffic WordPress site on performance-sensitive hosting and cannot accept additional PHP and database overhead per request.
- You manage multiple client WordPress sites and need a single unified dashboard across all of them.
- You want AI-generated variants, advanced audience targeting, or a visual editor that works outside of WordPress.
3. Thrive Optimize
Thrive Optimize is a WordPress A/B testing plugin built by Thrive Themes specifically to work alongside Thrive Architect, their drag-and-drop page builder. It lets Thrive Architect users duplicate any landing page into an A/B variant, edit it inside the same familiar page builder interface, and launch the test — all without leaving WordPress. Reporting shows conversion rates, winners, and goal completions directly inside the WordPress admin.
Thrive Optimize's major constraint is also its defining feature: it only works on pages built with Thrive Architect. If your WordPress site uses Elementor, Divi, Gutenberg, or any other page builder, Thrive Optimize is not compatible. For teams already inside the Thrive ecosystem, however, this tight integration makes it the simplest possible way to add A/B testing to a landing page workflow.
Pricing: Thrive Optimize is available standalone at $67/year, as part of the Thrive Architect + Thrive Optimize bundle at $167/year, or as part of Thrive Suite (all 8 Thrive plugins) at $299/year. A 30-day money-back guarantee is offered. No free plan is available.
User rating: 4.4/5.
Key features for WordPress:
- One-click variant creation from any Thrive Architect page — duplicate the page, edit, and launch
- Visual editing of variants inside Thrive Architect — no separate dashboard required
- Automatic traffic splitting and statistical winner detection
- Revenue and conversion goal tracking
- Easy winner-deployment: replace the original page with the winning variant in one click
- Clean integration with other Thrive plugins (Thrive Leads, Thrive Ultimatum) for full funnel testing
Choose Thrive Optimize when:
- You already use Thrive Architect as your primary WordPress page builder.
- Most of your tests are landing page experiments built in Thrive Architect.
- You want the simplest possible workflow for testing pages without a separate SaaS subscription.
- You are already a Thrive Suite subscriber and want A/B testing at no additional cost.
Avoid Thrive Optimize when:
- You do not use Thrive Architect — the plugin will not work with Elementor, Divi, Gutenberg, or other builders.
- You need to test beyond landing pages: WooCommerce product pages, blog posts, headers, or site-wide elements.
- You want advanced audience targeting, GA4 integration, or AI-generated variants.
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4. VWO
VWO is a broad conversion optimization suite that includes A/B testing, multivariate testing, split URL testing, heatmaps, session recordings, surveys, funnel analysis, and personalization. It has an official WordPress plugin (5,000+ active installs, actively maintained) that inserts the VWO SmartCode and automatically tracks WooCommerce events. It also works via a plain script tag through WPCode or your theme header.
VWO is strongest for teams that want research and experimentation in one interface. Rather than running heatmaps in one tool and A/B tests in another, teams can observe visitor behavior and launch tests from the same platform. The major trade-off on WordPress is script weight: VWO's script is approximately 127KB, which adds meaningful page load overhead on WordPress sites that have already optimized for Core Web Vitals. For teams where the behavioral research features justify the cost, VWO is a capable mid-market option. For teams that only need A/B testing, the script weight is a significant downside.
Pricing: Starts at approximately $574/month for 100,000 MTU billed annually. VWO's free starter plan has been discontinued; new sign-ups receive a trial only.
User rating: 4.4/5.
Key features for WordPress:
- Official WordPress plugin on WordPress.org — one-click SmartCode installation with automatic WooCommerce event tracking (product views, add-to-cart, purchases)
- Visual editor with AI-powered copy suggestions via VWO Copilot
- Heatmaps, click maps, scroll maps, and session recordings
- Surveys and funnel analysis alongside A/B tests
- SmartStats Bayesian engine with real-time reporting
- Full-stack SDKs for server-side experimentation
Choose VWO when:
- You want heatmaps, recordings, surveys, and A/B testing consolidated in one platform.
- Your team runs a mature optimization program and will actively use the full suite of research features.
- You need a recognized mid-market vendor with established integrations and support. Read our full VWO review for an in-depth breakdown.
Avoid VWO when:
- You only need A/B testing and do not want to pay for a large suite of research tools.
- Your WordPress site is performance-sensitive — the ~127KB script is a meaningful overhead compared to lighter alternatives.
- Budget is a constraint and the ~$574/month starting price is above your range.
5. Convert Experiences
Convert Experiences is a flexible A/B testing platform popular with CRO teams and agencies. It has an official WordPress plugin that handles script installation automatically, and also installs via WPCode, theme header field, or GTM. It is lighter than VWO while offering strong technical control: advanced audience targeting, QA tools, privacy positioning, and both Frequentist and Bayesian statistics options.
Convert is a particularly good fit for CRO agencies managing multiple WordPress client sites. Its project structure, privacy-first architecture, and technical depth support the kind of complex, repeatable test setups that agencies run across many clients. It integrates directly with WooCommerce via the GA4 path, and its 40+ behavioral targeting filters let you scope tests to specific audience segments.
Pricing: $299/month for 100,000 MTU billed annually; $399/month billed monthly. A 15-day free trial is available. No ongoing free plan.
User rating: 4.7/5.
Key features for WordPress:
- Official WordPress plugin on WordPress.org — one-click script installation on any WordPress setup
- Anti-flicker SmartInsert technology for flicker-free experiment rendering
- 40+ behavioral targeting filters including device, geography, cookies, and CRM ID
- Live Logs and QA Wizard for real-time test verification before launch
- Frequentist and Bayesian statistics — user-selectable per experiment
- SSO, two-factor authentication, and GDPR compliance
Choose Convert Experiences when:
- You are a CRO agency running experiments across multiple WordPress client sites.
- Your team needs advanced audience targeting, QA workflows, and technical implementation options.
- Privacy and EU-friendly positioning are part of your client commitments.
Avoid Convert Experiences when:
- You want a free ongoing plan — Convert only offers a 15-day trial.
- Your tests are simple and you do not need advanced targeting or statistics options.
- You want experiment setup inside the WordPress admin rather than a separate dashboard.
6. Crazy Egg
Crazy Egg combines heatmaps, click maps, scroll maps, session recordings, surveys, and basic A/B testing. It is a natural starting point for WordPress teams that want to understand visitor behavior before running tests — identifying where users click, how far they scroll, and where they drop off before hypothesizing what to change.
Crazy Egg has an official WordPress plugin that adds its tracking script to every page in one click. Its A/B testing features are relatively straightforward: a visual editor for code-free variant creation, automatic traffic allocation to winning variants, and conversion tracking via custom events. It is not the deepest experimentation platform, but for a small team just beginning its CRO journey, the combination of behavior research and basic A/B testing in one affordable subscription lowers the barrier to getting started.
Pricing: Starts at $99/month for 150,000 tracked page views billed monthly. A 30-day free trial is available.
User rating: 4.2/5.
Key features for WordPress:
- Official WordPress plugin on WordPress.org — one-click tracking script installation
- Heatmaps, click maps, scroll maps, and session recordings for behavior research
- Visual editor for no-code A/B test creation
- Automatic traffic allocation to winning variants
- Surveys and in-page feedback collection
- Affordable entry price for small teams
Choose Crazy Egg when:
- You are early in conversion optimization and want heatmaps and recordings more than advanced testing controls.
- You want behavior research and basic A/B testing in one affordable subscription.
- Your tests are simple, page-level changes on a small WordPress site.
Avoid Crazy Egg when:
- You need robust statistics, advanced audience targeting, server-side testing, or feature flags.
- You already have a separate heatmap tool and only need a focused, capable A/B testing layer.
- Your WooCommerce or ecommerce testing needs advanced revenue tracking and segmentation.
7. Split Hero
Split Hero is an A/B testing platform built exclusively for WordPress. Unlike the other external tools on this list, Split Hero has no ambition beyond WordPress — it is designed specifically around WordPress's page builder ecosystem and is aimed squarely at freelancers, small businesses, and agencies running tests on WordPress sites. It works with all major page builders including Gutenberg, Elementor, Divi, and Beaver Builder, and tracks conversions including WooCommerce orders, form submissions, and button clicks.
The standout characteristic is pricing model: Split Hero charges a flat monthly rate regardless of visitor volume. Most other A/B testing tools price by Monthly Tested Users or page views, which makes costs hard to predict on growing sites. Split Hero's unlimited-visitor plans remove that variable — useful for agencies billing fixed retainers or businesses whose traffic is seasonal.
Pricing: Starts at $29/month for 3 active campaigns (unlimited visitors). Premium at $99/month for unlimited campaigns. A 14-day free trial is available. Note: Split Hero is not distributed through WordPress.org — install via the plugin download from splithero.com.
Key features for WordPress:
- Built exclusively for WordPress — no feature set designed for other CMSs or native mobile apps
- Works with Gutenberg, Elementor, Divi, Beaver Builder, and all major page builders
- Flat-rate pricing with unlimited visitors — costs do not scale with traffic growth
- WooCommerce order tracking as a conversion goal alongside form submissions and button clicks
- Unlimited guest accounts — useful for agencies sharing campaign access with clients
- Campaign scheduling with start and end dates
- PDF report generation for client reporting
Choose Split Hero when:
- You are a WordPress freelancer or agency and want a testing tool built exclusively for that ecosystem.
- Your traffic volume is high or unpredictable and you want flat-rate pricing that does not scale with visitors.
- You need to share campaign access with clients without giving them full dashboard access.
- Your tests are primarily page-level or landing page experiments on WordPress sites.
Avoid Split Hero when:
- You need all experiment configuration inside the WordPress admin — Split Hero uses a separate web dashboard.
- You need advanced statistics options (Bayesian vs. Frequentist), SPA support, or AI-generated variants.
- You are not running WordPress — Split Hero only works on WordPress.
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Which A/B testing tool should you choose for WordPress?
- If you want the lightest, fastest A/B testing on WordPress: choose Mida. Official WordPress plugin, ~15KB compressed script, free Sandbox up to 100,000 MTU, GA4 and WooCommerce integration, and a visual editor that works across all page builders.
- If you want everything inside the WordPress admin: choose Nelio AB Testing. Fully WordPress-native with a free plan — ideal for teams who do not want a separate SaaS dashboard.
- If you use Thrive Architect for landing pages: choose Thrive Optimize. The simplest possible A/B testing if your pages are already in the Thrive ecosystem.
- If you want heatmaps and recordings alongside A/B testing: compare VWO and Crazy Egg. VWO is more capable for larger teams; Crazy Egg is more affordable for small sites starting out.
- If you are a WordPress freelancer or agency wanting flat-rate pricing: choose Split Hero — built exclusively for WordPress, unlimited visitors, and unlimited guest accounts for client sharing.
- If you are a CRO agency running tests on many WordPress client sites: compare Mida and Convert Experiences — both support multi-client workflows with strong technical controls.
The most common mistake WordPress teams make is choosing a tool based on brand recognition rather than architectural fit. A heavy experimentation script that adds 100KB+ to an already-optimized WordPress site can create more conversion damage than the tests it is running ever recover. Start with the performance requirements your site demands, then select the tool that meets them.
FAQs: A/B testing on WordPress
Q: What is the best A/B testing plugin for WordPress?The best choice depends on your workflow and stack. For teams who want a lightweight, fast solution with an official WordPress plugin, Mida is the best pick — free Sandbox up to 100,000 MTU, ~15KB script, works with all page builders, and built-in WooCommerce purchase tracking. For teams who want everything inside WP admin, Nelio AB Testing is the most feature-complete WordPress-native option.
Q: Will A/B testing slow down my WordPress site?It depends on which tool and how it is installed. WordPress-native PHP plugins add server-side overhead to every request from tested pages, which can increase TTFB. Script-based tools vary widely in size — from Mida's ~15KB to VWO's ~127KB. On WordPress sites where themes, page builders, and optimization plugins already consume the performance budget, a heavy A/B testing script can push previously-passing Core Web Vitals into failing territory. Choose a tool with a documented, lightweight script and an anti-flicker implementation that does not introduce visible FOOC (flash of original content).
Q: Does A/B testing work with WordPress caching plugins like WP Rocket?Script-based tools like Mida, VWO, and Convert work correctly with WordPress caching plugins. The same cached HTML is served to every visitor, and the A/B testing script determines which variation to apply in the browser after page load. The main configuration step is to exclude the Mida script from WP Rocket's delay-JavaScript or minification settings so it loads as intended. If you enable Mida's optional anti-flicker in the plugin settings, also ensure the script is not deferred, as the anti-flicker runs inline before page render. WordPress-native PHP plugins like Nelio can conflict with aggressive full-page caching that bypasses PHP execution entirely — check the plugin's documentation for your specific caching setup.
Q: Can I run A/B tests on WooCommerce product pages?Yes. Most tools on this list work with WooCommerce. Mida's WordPress plugin automatically tracks add-to-cart, checkout, and order completions — including order value — so you can see which test variant is actually generating more revenue, not just more clicks. Nelio AB Testing lets you test WooCommerce products directly from the WordPress admin, including the product name, description, images, and price. Convert Experiences also supports WooCommerce through its WordPress plugin.
Q: Does A/B testing work with Elementor, Divi, and other WordPress page builders?Script-based tools — Mida, VWO, Convert, Crazy Egg — operate on the rendered DOM, which is the final HTML a visitor's browser receives after the page builder has done its work. This means they work identically regardless of which page builder assembled the page. WordPress-native PHP plugins have varying compatibility with page builders depending on how tightly they hook into the WordPress rendering pipeline; check your chosen page builder's compatibility with any WP plugin before deploying.
Q: Is there a free A/B testing tool for WordPress?Yes. Mida offers a free Sandbox plan up to 100,000 Monthly Tested Users per month with no credit card required — the most generous free tier among visual-editor tools. Nelio AB Testing has a free plan limited to 500 tested page views per month and one active test. Both are ongoing free plans, not trials. VWO discontinued its free starter plan; most other tools on this list only offer time-limited free trials.
Q: What happened to Google Optimize for WordPress users?Google Optimize shut down on September 30, 2023. For WordPress teams, the most direct replacement is Mida — it has a native GA4 integration, a free Sandbox plan, and a visual editor that mirrors the core Google Optimize workflow. You can compare options in our guide to free Google Optimize alternatives.
Q: How do I install an A/B testing tool on WordPress without a developer?Several tools have official WordPress plugins that handle installation in one click: Mida, VWO, Convert Experiences, Crazy Egg, and Nelio AB Testing are all on WordPress.org — go to Plugins → Add New, search the tool name, and activate. Split Hero distributes its plugin directly from splithero.com. Thrive Optimize installs as a standard WordPress plugin from the Thrive Themes members area.
Q: Can I run A/B tests on WordPress without affecting my page speed score?Yes, if you choose a lightweight tool. Mida's ~15KB compressed script with ~20ms load time sits well below the threshold where third-party scripts begin to regress Lighthouse or Core Web Vitals scores on a well-optimized WordPress site. The key is ensuring the script is excluded from caching plugin delay-JavaScript settings (so it runs early enough to prevent flicker) and not combined with other scripts in a way that delays its execution. A/B testing tools that ship 100KB+ bundles will cause measurable regressions on the same WordPress setup.
