SEO experiment planner and results comparator
Plan sample needs, compare valid experiments and keep before/after observations descriptive.
Mode
Direction
Runs entirely in this browser.
Statistical significance is not business importance, and observational SEO changes are not causal proof.
Method
Plan sample needs, compare valid experiments and keep before/after observations descriptive.
Privacy
Runs entirely in this browser.
Limitations
Statistical significance is not business importance, and observational SEO changes are not causal proof.
Primary sources
- Creating helpful, reliable, people-first content — Google Search Central; 2025-12-10; 2026-08-14.