# Fidel

> Fidel is an automated design QA tool that checks your live web pages against your design system or Figma and flags visual drift — spacing, typography, color, and layout — ranked by severity. Available as a web app, Chrome extension, and GitHub Action for CI.

Fidel is for frontend developers, QA engineers, product designers, and design system teams shipping web UI. Last updated: August 2026.

## What it does

- Checks a live URL (staging, localhost, or production) against a source of truth: your design system tokens, a Figma frame, or another URL
- Reads your design and live page directly — no screenshot diffing, so results are specific and actionable
- Flags where the built page drifts from the spec: spacing, typography, color, border-radius, dimensions, and layout
- Returns a severity-ranked list of issues (Critical / High / Medium) with expected vs actual values per property
- Web app generates shareable report links — no login required to view
- GitHub Action posts issues directly to the PR
- Chrome extension validates any page in your browser
- Results exportable as Markdown, JSON, or shareable links

## Who it's for

- Frontend developers validating UI before merge, including hand-written and AI-generated code
- QA engineers catching drift before release
- Product designers confirming builds match the design
- Design system teams catching token and property drift

## Common use cases

- Checking a staging URL against Figma before merging a PR
- Enforcing design-system compliance on every pull request
- Validating that a new component matches the design spec
- Comparing staging against production to catch regressions
- Sharing validation reports with designers and stakeholders

## How it's different

Unlike visual regression tools (Percy, Chromatic, BackstopJS) that compare against a previous baseline, Fidel compares against the design source of truth — your design system or Figma file. It reports expected vs actual values per property, not just "something changed." No baseline to set up, no test suite to maintain, no selectors to write. Useful from your very first deployment.

## Performance

- Median validation time: 3.4 seconds (57% of runs complete in under 5 seconds)
- Based on internal benchmarks across 22 production page validations, March 2026

## Pricing

- Early access: $29 one-time secures a founding spot and includes the first 3 months when Fidel opens

## Main

- [Fidel landing page](https://usefidel.com/): Product overview and primary entry point.
- [Get early access](https://usefidel.com/?utm_source=llms&utm_medium=referral&utm_campaign=ai_discovery): Reserve a founding spot.
- [Web App](https://app.usefidel.com/): Paste a source of truth and a live URL, get a shareable report.
- [Privacy Policy](https://usefidel.com/privacy): How Fidel handles your data.
- [Terms of Service](https://usefidel.com/terms): Terms and conditions.
- [Cookie Policy](https://usefidel.com/cookies): How Fidel uses cookies.

## Comparisons

- [Fidel vs Percy](https://usefidel.com/vs/percy/): How Fidel differs from Percy visual regression testing.
- [Fidel vs Chromatic](https://usefidel.com/vs/chromatic/): How Fidel differs from Chromatic visual testing.
- [Fidel vs Manual Review](https://usefidel.com/vs/manual-review/): How Fidel compares to manual design QA.
- [Fidel vs Hypermatic](https://usefidel.com/vs/hypermatic/): How Fidel differs from Hypermatic.

## Contact

- [Email](mailto:team@usefidel.com): Product questions and partnerships.