VizDiff automates visual regression testing for Storybook components, capturing screenshots during CI, highlighting pixel-level UI differences, and helping your team catch visual bugs before they ship.
https://vizdiff.io
VizDiff automates visual regression testing for Storybook components in GitLab CI.
- for
- Frontend teams using Storybook and GitLab CI who need visual regression testing.
- license
- MIT
works withStorybookGitLab CIGitLab Merge Requests
Key features
4 features of VizDiff
- Storybook Integration — Runs visual tests directly on components from your existing Storybook setup.
- GitLab Merge Requests — Shows screenshot diffs inside GitLab merge requests for easy approval or rejection.
- Pixel-Perfect Diffing — Highlights pixel-level UI differences to quickly spot visual bugs.
- Team Collaboration — Shares baselines and review results across the team within a unified UI.
Use cases
- Detect UI regressions before merging a feature branch in GitLab.
- Validate visual consistency of component libraries after design updates.
- Collaboratively review and approve UI changes during code review.
VizDiff vs alternatives
 VizDiff |  Storybook |  GitLab CI |  Cypress |  CircleCI | |
|---|---|---|---|---|---|
| Best for | Automated visual diffing for Storybook | Component isolation and documentation | General CI/CD pipelines | Browser-based functional testing | Scalable CI/CD workflows |
| Pricing | Subscription | Free | Subscription | Free | Subscription |
| DevHunt upvotes | 1 | 0 | 0 | 0 | 0 |
| Launched | Feb 2026 | — | — | — | — |
- VizDiff vs Storybook: Storybook is a UI component development environment, not a visual regression tester.
- VizDiff vs GitLab CI: GitLab CI runs pipelines but does not provide visual diffing for UI components.
- VizDiff vs Cypress: Cypress offers end-to-end browser testing, not focused on Storybook visual diffs.
- VizDiff vs CircleCI: CircleCI is a CI platform without built-in visual regression features for Storybook.
VizDiff FAQ
How does VizDiff capture screenshots?+
It runs in your GitLab CI pipeline and automatically takes screenshots of each Storybook component on every commit.
Can I see visual diffs inside a merge request?+
Yes, VizDiff posts pixel-perfect diff images directly to GitLab merge requests for review.
Do I need to change my existing Storybook setup?+
No, VizDiff works with your current Storybook build without requiring modifications.
Is there a team view for reviewing baselines?+
VizDiff provides a shared interface where baselines and diff results can be reviewed by the whole team.
Summarized by DevHunt from vizdiff.io · Oct 6, 2026. Details may change; check the official site.
