BackstopJS vs Chromatic

Free and open source

From $149 per month (indicative, starter)

Free and open source. You pay in engineering time and CI minutes.

Snapshot-based billing. TurboSnap, which only re-tests stories affected by a change, is the main cost control.

Everything, self-hosted

Free tier with a monthly snapshot allowance.

Established

OSS community · since 2015

Widely used

Chromatic · since 2017

• Free with no snapshot quota — run it as often as you like.
• Baselines stay in your repository, which suits regulated or air-gapped environments.
• Simple JSON configuration that a junior engineer can extend.

• Zero-effort setup if you already have Storybook — stories are the tests.
• The hosted review UI is genuinely usable by designers and product managers.
• TurboSnap dramatically reduces snapshot cost on large libraries.

• Pixel-diff comparison means font rendering differences between machines cause false failures; Docker is effectively mandatory.
• No hosted review or approval workflow — approving means committing new images.
• Reference images bloat the Git repository over time.

• Strongly tied to Storybook; without it much of the value disappears.
• Component-level, not full-page — it will not catch a broken page layout.
• Snapshot pricing still adds up on a big design system.

Teams that need visual testing without a SaaS vendor or a per-snapshot bill.

Design-system and component-library teams already invested in Storybook.