About The Pixel House
Visual regression testing and screenshot monitoring, built for developers who ship fast and need confidence that nothing visual has broken.
Why we built this
Visual regressions are one of the most common and most overlooked categories of software defect. A CSS change in one component quietly breaks the layout of a page three routes away. A dependency upgrade shifts font rendering by a fraction of a pixel. A deploy goes out, and nobody notices until a customer screenshots the problem and emails support.
Existing visual testing tools are tightly coupled to CI/CD pipelines, charge per-screenshot, and offer no way to monitor live production pages on a schedule. We wanted something different: an API-first platform that works with any workflow, charges a flat rate, and lets you monitor URLs continuously rather than only testing them at build time.
The Pixel House uses SSIM (Structural Similarity Index) perceptual comparison rather than raw pixel diffing. SSIM evaluates structural, luminance, and contrast changes the way the human visual system does, which means dramatically fewer false positives from sub-pixel font rendering differences across environments.
What we do
- Screenshot capture — pixel-perfect renders across desktop, tablet, and mobile viewports via Cloudflare Browser Rendering
- Visual diffing — SSIM perceptual comparison with configurable thresholds and ignore regions
- Baseline management — branch-aware baselines for parallel feature testing
- Scheduled monitoring — hourly, daily, or weekly checks on live URLs with alerts via email, Slack, or webhook
- MCP server — visual regression testing directly from AI coding assistants such as Claude Code, Cursor, Windsurf, and GitHub Copilot
- REST API — full API with OpenAPI spec, designed to integrate into any CI/CD pipeline or custom workflow
Company
The Pixel House is a product of ToggleKit Ltd, a company registered in England and Wales.
- Company number: 16180339
- Registered address: ToggleKit Ltd, 86-90 Paul Street, London, EC2A 4NE, United Kingdom
- Contact: hello@thepixelhouse.co.uk
Infrastructure and data
All data is stored within the European Union. Screenshots and visual diffs are stored in Cloudflare R2 object storage (EU region). Account and project metadata is stored in Neon Postgres (EU region). We do not transfer personal data outside the EU or UK without adequate safeguards in place.
The platform runs on Cloudflare Workers, providing edge-level latency from over 300 cities worldwide. API responses are typically served in under 50ms from the nearest Cloudflare point of presence.
Open source
Our CLI tool and MCP server packages are open source. You can find them on GitHub.
Get in touch
Questions, feature requests, or enterprise enquiries? We respond within one working day.