> For the complete documentation index, see [llms.txt](https://docs.shoplift.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.shoplift.ai/analyze/tracking/anti-flicker.md). # Anti-Flicker ## Anti-flicker component When running tests, Shoplift automatically extends the base testing script to include an "anti-flicker" component. This prevents the display of page content until all elements have fully loaded, which ensures a consistent shopper experience and prevents "page flicker" or the "blink effect" which is common with A/B testing platforms. The anti-flicker script is lightweight and allows for optimal page speed. Within this fraction of a second, Shoplift will place users into an audience segment corresponding with test parameters. We've optimized our anti-flicker solution to run only on actively tested pages to ensure a near-zero performance impact on your store when running tests. Once users have been placed into one segment, they will be prevented from seeing the other variant for the duration of the test. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.shoplift.ai/analyze/tracking/anti-flicker.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.