Platform
Three engines. One deterministic result.
As an AI visual testing startup, we built Nerro Labs around a single comparison engine shared by visual diffing, cross-browser execution, and self-healing — so a fix in one shows up everywhere.
Visual AI
Comparison that understands layout, not just pixels
A naive pixel diff flags every anti-aliasing shift as a failure. Nerro Labs' visual AI understands layout structure, so it ignores noise and flags what actually matters — a shifted button, a broken grid, a missing icon.
- Region-level diffing with exact pixel offsets
- Ignores dynamic content like timestamps and ads automatically
- Baseline approval workflow built for design review
Cross-browser & device
One suite, every browser and viewport
Write a test once and run it against Chrome, Firefox, Safari, and Edge, across desktop, tablet, and mobile viewports — in parallel, not sequentially.
- Parallel execution cuts full-suite runtime by up to 80%
- Real device rendering, not emulated viewports
- Per-browser baselines, so a Safari-only quirk doesn't fail Chrome
Self-healing
Locators that survive a redesign
Most test suites break the moment a developer renames a class or restructures a component. Nerro Labs matches elements by visual and structural similarity, so the test keeps running instead of failing on a cosmetic change.
- Confidence score shown for every automatic match
- Healed locators are logged for human review, not silently accepted
- Works across React, Vue, and traditional server-rendered markup
Locator broke
#submit-btn renamed to #checkout-cta
AI matched the new element
98% visual + structural confidence
Test suite updated itself
No PR, no manual fix
Run completed
Passed in 4.1s
Secure & flexible
Run Nerro Labs anywhere, test any app
Run in our cloud
Get up and running in minutes using Nerro Labs as a fully managed SaaS solution.
Run in your cloud
Deploy in a dedicated environment on AWS, Azure, or GCP for a flexible, secure setup.
Deploy on-prem
Run Nerro Labs inside your own infrastructure and firewall for maximum control.
Data retention controls
Choose how long screenshots and run history are retained, down to the project level.
Proprietary visual AI
Models trained specifically for UI comparison, not a general-purpose vision API.
SSO + SAML support
Login via SSO or SAML to cut administrative overhead for larger teams.
Integrations
Fits into the pipeline you already run
Nerro Labs is a plugin for the test framework and CI pipeline you already have — not a replacement that asks you to start over.