Tool Cross Browser Diff

Category: Visual Testing · Tier: All

Quick diff of page metrics across browsers

When to Use

Visual testing in CBrowser uses Wasserstein optimal transport theory. 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 compare
browsers	array	No	Browsers to compare

Example

Quick diff of rendering between Chrome and WebKit

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