Visual testing for pages, not just components
Chromatic is the best-in-class tool for Storybook component testing. RegressionBot tests the pages your visitors actually load — crawled from a URL, with AI-summarized verdicts and no component library to maintain.
Where Chromatic is strong
If you have a Storybook and a design system, Chromatic is excellent and we are not a replacement for it. Component coverage and page coverage are different jobs — plenty of teams should run both.
Chromatic
Built around a Storybook component library. A component can pass in isolation while the assembled page is broken.
RegressionBot
Tests the composed page as shipped, from a URL — which is where marketing sites break.
RegressionBot vs Chromatic, point by point
Checked against Chromatic's own pricing and feature pages on 26 July 2026.
| Chromatic | RegressionBot | |
|---|---|---|
| Unit of testing | Storybook stories and components | Whole pages, as served |
| Requires a component library | Yes | No |
| Works on a CMS-built site with no repo | No | Yes |
| Plain-English summary of what changed | Not offered | On every run |
| Free tier | 5,000 billed snapshots/mo | 7-day trial |
| Paid entry | $179/mo for 35,000 billed snapshots | $9/mo for 2,000 comparisons |
Compare RegressionBot vs Alternatives
| Feature | RegressionBot | Percy | Chromatic | Argos |
|---|---|---|---|---|
| Setup Model | URL / sitemap crawler | CLI, SDK or sitemap | Storybook plugin | CLI or test-run upload |
| Test Code Required | None | Optional | Storybook stories | Optional |
| Plain-English change summaries | Every run | No | No | No |
| Typed change regions (added / removed / moved) | Yes | No | No | No |
| Starting Price (Paid) | $9/mo | Quote-based | $179/mo | $100/mo |
Comparing us with a live-site monitoring tool instead?
Stop squinting at red pixels.
When a layout changes, RegressionBot doesn't just throw a broken test and a red box at you. It uses vision models to understand the DOM and explain exactly what changed—and whether it matches your intent.
Changes detected:
- The hero icon was updated from a square to a checkmark (A).
- A new "Admin Dashboard" navigation item was added to the sidebar (B).
- Text phrasing in the configuration paragraph was modified (C, D).
- A new "Project Configuration Locking" section was inserted (E).
- The active state indicator in the Table of Contents was shifted (F).
✓ These changes match the provided PR description: "Add Admin Dashboard to sidebar and document configuration locking."
Storage Configuration
Learn how to configure Pulse to preserve visual snapshot records and perform comparisons across pipeline runs.
Configure Pulse to preserve visual snapshot records securely in Csecure cloud storage and comparing from Dstored baseline images on future pipeline runs.
Lock parameters during a run to prevent visual baseline regression drift across environments.
Frequently asked questions
Ready to ship with confidence?
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