Visual testing

Composal vs reg-suit

reg-suit provides visual comparison and lets teams compose storage and reporting around their own build system.

Two workflows, side by side

Composal

Composal sends AI browser agents to use your running web app and check the outcomes you care about. Define journeys as plain-English Scenarios, map existing flows with Discovery, or explore for bugs with Deep Scan. Runs keep recordings and reproduction steps so your team or coding agent can investigate a Finding.

Verify documentation →

reg-suit

Visual regression testing with pluggable storage

reg-suit is an open-source visual regression testing tool that compares screenshots from builds and supports pluggable storage and reporting integrations.

What each tool does

“With setup” means you supply code or configuration. “Not confirmed” means support for this workflow needs checking with the vendor.

Composal and reg-suit workflow capabilities
Workflow	Composal	reg-suit
Run browser journeys	Yes Run saved browser Scenarios and return recordings and reproducible Findings.	With setup Captures or compares rendered pages through a configured test or visual workflow; confirm the supported runner.
Map application workflows	Yes Discovery maps key application areas and user journeys.	Not confirmed Check whether this product includes this workflow in your intended plan and setup.
Explore for unexpected issues	Yes Deep Scan explores the running application and reports reproducible issues.	Not confirmed Check whether this product includes this workflow in your intended plan and setup.
Describe checks in plain English	Yes Author Scenarios around the intended user outcome, then review the steps and expected results.	Not confirmed Check whether this product includes this workflow in your intended plan and setup.
Run or inspect from a terminal	Yes Use the CLI to start and inspect verification runs and their Findings.	Not confirmed Check whether this product includes this workflow in your intended plan and setup.
Visual regression baselines	No Use a dedicated tool for this specialist workflow alongside Composal’s browser verification.	Yes reg-suit is an open-source visual regression testing tool that compares screenshots from builds and supports pluggable storage and reporting integrations.

Where each fits

Choose reg-suit when an open-source, configurable visual-diff step fits your CI design and you already have screenshot generation covered.

Try this evaluation

Choose a frontend repository that already generates screenshots and connect reg-suit to a small CI job with a deliberate reference update. In Composal, exercise the corresponding page as part of a user journey.

Coverage: Which user outcomes must this release prove, and which specialist checks must stay in your existing stack?
Setup: Who prepares accounts, test data, permissions and access to the deployment being tested?
Evidence: Can the engineer reproduce a reported failure from the recording and steps, without asking the tester to investigate again?
Ownership: Who updates the checks when the product changes, and can the team review what a passing result actually proves?