Know exactly what doesn't match the design — before it merges.
Fidel checks your staging or production URL against your Figma design. Spacing, typography, color, layout — scored and ranked in under 2 minutes.
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Figma vs Production
Fidel validates your web UI against Figma designs — automatically, on every pull request. It compares your staging or production URL to a Figma frame and detects differences in spacing, typography, color, border-radius, and layout. It produces a match score (0–100) and a severity-ranked list of issues posted to your PR, ready to fix.
Built for teams shipping web UI
Frontend Developers
Validate UI before merge. Catch spacing, color, and layout diffs against the Figma spec.
QA Engineers
Check design fidelity before release. Get a severity-ranked list instead of manual pixel-checking.
Product Designers
Objective validation instead of subjective sign-offs. Share a match score and issue list with your team.
Design System Teams
Check that component implementations match the design system spec. Spot token and property drift on any page.
Common use cases
- Comparing staging URLs against Figma before merging a PR
- Running a design QA check before a release
- Validating that a new component matches the design spec
- Checking whether a redesign was implemented correctly
Catch what manual reviews miss
Validation that actually finds the differences between design and code.
Side-by-Side Comparison
Compare Figma frames with what developers built. Detect mismatches in layout, typography, spacing, and color automatically.
Smart Issue Ranking
AI ranks issues by severity (Critical/High/Low) with actionable insights. Know exactly what to fix first.
Objective Scoring
Get a clear score (0-100) to measure implementation accuracy. No more subjective "looks good" sign-offs.
Pre-Merge Check
Run a validation on your staging URL before merging. Catch spacing, color, and layout issues before they reach production.
1-2 Minute Validation
Get comprehensive results fast. What used to take 30+ minutes of manual review now takes under 2 minutes.
4 steps to validated designs
From install to first validation in under 5 minutes.
Install Extension
Add Fidel to Chrome. Works with any Figma file you have access to.
Connect Figma
Authenticate via Figma OAuth. One-click secure connection, no tokens to manage.
Run Validation
Point to any staging or production URL. Get results in 1-2 minutes.
Get Output
Score, ranked issues, annotated screenshots, and a shareable link for your team.
Compared against the design, not yesterday's screenshot
Unlike visual regression tools that compare your UI against a previous baseline, Fidel compares against the design source of truth — your Figma file. It detects spec violations, not just changes from a previous version.
Visual regression tells you "something changed." Fidel tells you "this doesn't match the design, and here's the expected value."
This means Fidel is useful from your very first deployment — no baseline to set up, no test suite to maintain, no CI integration required. Point it at a Figma frame and a URL and get results.
Get results where you need them
Export validation results in the format your workflow needs.
Markdown for PRs
Copy a formatted summary — score, top issues, and report link — ready to paste into GitHub, GitLab, or Bitbucket pull requests.
Shareable Report Link
Generate a public link to share in Slack, Jira, Linear, or email. No login required to view.
JSON for CI/CD
Export structured JSON output for integration with automated pipelines, custom dashboards, or issue trackers.
Frequently Asked Questions
How is Fidel different from visual regression testing?
Visual regression tools detect changes from a previous version. Fidel compares against your Figma file and reports expected vs actual values for each mismatch. They're complementary — visual regression catches regressions, Fidel catches spec violations.
Does it work with any Figma file?
Yes, any file you have access to via Figma OAuth. Works with Starter, Professional, and Enterprise plans.
Does Fidel need access to my codebase?
No. Fidel reads the live DOM from your deployed page and compares it against Figma data fetched via the Figma API. The GitHub Action lives in your repo but only needs a deploy URL — it doesn't read or analyze your source code.
What properties does it check?
Spacing, typography (font size, family, weight, line height), color (perceptual comparison), border-radius, dimensions (width, height), and layout (display, flex/grid properties).
Is my Figma data safe?
Yes. Figma data is fetched on-demand and held in memory only. It is never stored on servers. Your OAuth token is exchanged server-side and never exposed to third parties. See our privacy policy for details.
Can I use it on staging or localhost?
Yes. Fidel works with any URL — localhost, staging environments, and production URLs. The GitHub Action uses headless Playwright; the Chrome extension works with any tab.
Validate your next build against the design spec
Sign up for beta access. Get a match score and ranked issues in under 2 minutes.
Get a shareable report (score + top issues) in minutes.