UIProof gives you everything Percy does — pixel-level diffs, multi-viewport capture, CI/CD integration — plus an AI layer that tells you whether a diff is a real regression or just noise. Flat-rate pricing. No SDK required.
Four reasons the Percy workflow breaks down as your app scales
What you get and what you don't
| Feature | UIProof | Percy |
|---|---|---|
| Pixel-level visual diff | ||
| Multi-viewport capture (desktop/tablet/mobile) | ||
| AI regression classification | ||
| Flat-rate pricing (no per-screenshot fees) | ||
| URL-based setup (no SDK required) | ||
| Persona / ICP conversion review | ||
| Webhook + email alerts on regressions | ||
| REST API for CI/CD integration | ||
| Free tier available |
From URL to regression report in five steps
Paste the routes you want to monitor. No SDK, no Playwright integration, no test boilerplate. UIProof uses a real Chromium browser with full JavaScript execution.
UIProof captures screenshots across desktop (1440px), tablet (768px), and mobile (375px). This is your visual ground truth — the proof your UI looked right before the next deploy.
Merge your PR, deploy a feature, or trigger a release. Then kick off a new capture from the dashboard or via the REST API in your CI pipeline.
Instead of approving every changed screenshot manually, UIProof's AI layer classifies each diff: cosmetic, intentional, or regression — with a severity score and plain-English explanation.
Email and webhook notifications fire only on confirmed regressions. Intentional redesigns are acknowledged, not escalated. You stop chasing false positives.
No Percy SDK to install. One API call in your GitHub Actions workflow.
# .github/workflows/visual-test.yml
- name: Run UIProof visual test
run: |
curl -X POST https://uiproof.com/api/v1/capture \
-H "Authorization: Bearer $UIPROOF_API_KEY" \
-H "Content-Type: application/json" \
-d '{"projectId": "$PROJECT_ID", "compareToBaseline": true}'Pair with webhook alerts to fail CI on confirmed regressions only — no manual approval queue.
Yes. UIProof is URL-based — you don't need Playwright, Cypress, or any SDK. If you were using Percy's visual testing in a CI pipeline, you can replace that step with a UIProof API call that captures and diffs your URLs automatically. No test rewrites required.
Percy charges per screenshot, which scales costs as your app and CI frequency grow. UIProof uses flat-rate project pricing — you pay for the monitoring tier, not per-capture. For teams running multiple deploys per day across many pages, the difference is significant.
No. UIProof operates at the rendered URL level — it captures your full pages in a real browser. If you want component-level visual testing you can point UIProof at any URL (including local Storybook on a tunneled port), but it's not a requirement.
When UIProof diffs two screenshots, it doesn't just highlight changed pixels. The AI layer analyzes what changed and classifies the diff: was this a regression (layout broke, element disappeared, text overflows), a cosmetic update (color tweak, spacing nudge), or an intentional redesign (new component, planned change)? You get severity scores and explanations, not just a diff image.
Percy (by BrowserStack) is a visual testing platform that captures screenshots via SDK integration with Cypress, Playwright, or Storybook, then presents diffs for manual team approval. Teams look for Percy alternatives when per-screenshot costs become unpredictable, when the SDK setup overhead slows onboarding, or when they want AI-assisted review rather than manual approval workflows.
Yes. UIProof has a free tier that lets you add projects, capture baselines, and run diffs without a credit card. Upgrade to Pro ($79/mo) or Team ($199/mo) for higher capture limits, API access, and webhook alerts.
Add your first project, capture your baseline, and see your first AI-classified visual diff in under 5 minutes.