Lightweight A/B testing tool (<20KB) that doesn't slow down your site

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Mida is redefining A/B testing with a script that weighs just 17.2KB, making it 13X smaller than competitors like Convert.com (203KB), VWO (254KB), and WebTrends Optimize (170KB).

By prioritizing performance, Mida eliminates the trade-off between website speed and testing functionality, ensuring your site remains fast and responsive.

Performance impact on LCP in milliseconds

Why Is Mida So Fast?

Vanilla JS: Unlike many A/B testing tools that rely on the outdated jQuery library, Mida uses pure JavaScript (Vanilla JS) to keep things lean and efficient.
No jQuery: jQuery adds unnecessary bulk—its script alone is 80KB, more than 4X the size of Mida. These additional kilobytes don’t contribute to testing but still slow your site.
Minimal Performance Impact: Mida's script is designed to minimize any effect on your website's Core Web Vitals, especially metrics like Largest Contentful Paint (LCP).

Performance Impact: What Sets Mida Apart?

Super Lightweight: At just 17.2KB, Mida’s script ensures faster load times compared to bloated competitors.
No Flickering: Heavy testing scripts can cause page flickering, which distracts users, reduces trust, and skews test results. Mida’s lightweight approach avoids this entirely.
User-Friendly: Whether you're a developer or a marketer, Mida’s interface makes setting up and analyzing tests effortless.
Transparent Pricing: Mida offers flexible, usage-based pricing, making it accessible for businesses of all sizes.

Fixed Script Size - No Surprises

One of the most frustrating aspects of other A/B testing tools is how their script size increases as you add more tests or events. With Mida, this isn’t an issue.

Mida’s script is fixed at 17.2KB, meaning it does not grow as you create additional tests, variants, or events. This is a key differentiator because many other tools dynamically load additional code for each test, which increases the overall script size and can slow down your site over time.

With Mida, you get the same consistent performance regardless of how many tests you run. The script remains lightweight and efficient, ensuring your website stays fast and your tests continue to run smoothly.

Why Website Speed Matters

A fast website isn’t just nice to have—it’s essential for success:

Higher Search Rankings: Search engines like Google prioritize fast websites. Slow-loading sites may rank lower, reducing visibility.
Better User Experience: 47% of users expect a page to load in 2 seconds or less. Delays frustrate users and increase bounce rates.
Trust Signals: Browsers like Chrome now warn users when they visit slow-loading sites, which can erode trust.
Eco-Friendly: Lighter websites consume less data and energy, reducing your carbon footprint for every visitor.
Increased Conversions: Fast-loading sites foster better engagement and higher conversion rates, while heavy testing scripts can work against these goals.

What Is jQuery and Why Avoid It?

jQuery was once a popular JavaScript library for simplifying web development, but it’s now largely outdated. Modern browsers natively support most of its functionality, making jQuery redundant.

Key drawbacks of jQuery:

Heavy Load: At 80KB, it adds significant weight to your site without offering tangible benefits for testing.
Slower Performance: Scripts built on jQuery often degrade page speed, impacting both user experience and search rankings.

Mida skips jQuery entirely, focusing on a streamlined solution that keeps your site running smoothly.

How to Measure Your Website’s Speed and Script Sizes

Use tools like GTmetrix to:

Analyze metrics like PageSpeed Score and load time.
Visualize loading processes using the Waterfall chart, which highlights the impact of scripts on performance.
Identify areas for improvement and ensure scripts (like A/B testing tools) aren’t bottlenecks.

Why Mida Is the Ideal Choice for A/B Testing

Mida offers a lightweight, high-performance testing experience designed with modern websites in mind.

With minimal impact on load times, an easy-to-use interface, and competitive pricing, Mida is perfect for businesses that want to run experiments without compromising speed or user experience.

Ready to optimize your website and test smarter?
Give Mida a try today and experience the difference of lightweight A/B testing.

‍Click here to get started for free. Up to 50,000 monthly tested users.