Tool Responsive Test

Category: Visual Testing · Tier: All

Test page across different viewport sizes

When to Use

Visual testing in CBrowser uses Wasserstein optimal transport theory for robust comparison. Smart baselines compute the barycenter (optimal average) of multiple captures. Transport maps show where visual content moved. Attention analysis models persona-specific saliency.

Parameters

Parameter	Type	Required	Description
url	string	Yes	URL to test
viewports	array	No	Viewport presets (mobile, tablet, desktop, etc.)

Example

Test this page at mobile, tablet, and desktop viewports

Tips

• Visual testing uses Wasserstein optimal transport for robust comparison
• Smart baselines handle non-deterministic rendering automatically
• Transport maps show WHERE content moved, not just that it changed

Research

• Klein & Frintrop (DAGM 2012) — W₂ saliency on CIE-Lab distributions
• Agueh & Carlier (SIAM 2011) — Barycenters in Wasserstein space
• Taylor & Fiebach (2025) — OT predicts neural activity at <225ms

Related

• Tools Overview — All 120 tools by category
• Visual & Performance Tools — Full visual testing docs