reg-suit

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Introduction

reg-suit is a command-line interface for visual regression testing, according to its README. It is inspired by snapshot testing: it compares current images with previous ones and creates an HTML report of the differences. All you need is to give it images to assert, so screenshots can come from any tool, such as Storybook capture tools or end-to-end tests.

Snapshots are stored automatically in external cloud storage such as AWS S3 or Google Cloud Storage, so results can be reviewed at any time. Because it is just a CLI, it works in any CI service and on local machines. Plugins handle storage, key generation from Git commits, and notifications such as GitHub pull request comments and status checks.

The last release, 0.14.6, was published in March 2026, with commits in November 2026.

In the quality loop it supports visual checks in pull requests without a paid service.

The source code is at reg-viz/reg-suit on GitHub under the MIT licence, with about 1,300 stars; the most recent commit was on 16 March 2026.

Features

1. Image comparison: HTML diff reports.
2. Cloud storage: S3 and GCS plugins.
3. Git-based keys: Compare against the base commit.
4. PR notifications: GitHub comments and statuses.
5. Works anywhere: Plain CLI.

Pros

1. Tool-agnostic: Bring screenshots from any source.
2. Free to use: Open source under the MIT licence, so the core tool costs nothing to use.
3. Actively maintained: The repository had commits as recent as 16 March 2026.

Cons

1. Setup effort: Plugins and storage to configure.
2. Basic review UI: No approval workflow like SaaS tools.

Usage and Links (Example)

npm install -g reg-suit
reg-suit init   # answer questions, choose plugins
reg-suit run

Resources:

• reg-suit website

Pricing

reg-suit is free and open source under the MIT licence.

Recommended for?

1. Teams with existing screenshot generation wanting free comparison and reporting.
2. Not a fit for teams wanting hosted review and approvals.

Conclusion

reg-suit is a flexible, free CLI for visual regression in CI.

On CheckOps, reg-suit is filed under the End-to-end & functional and Release & CI gates stages. Related tools listed here include BackstopJS, Visual Regression Tracker, Argos, Chromatic, jest-image-snapshot and pixelmatch. Before choosing, compare them on licence, supported languages and platforms, hosting model, and how well each fits your existing CI pipeline. Facts on this page were checked against the official website, documentation and repository on 11 November 2026; statements the vendor makes about its own product are marked as vendor claims.