Built for people who
actually fix websites.
Generic scanners tell you that your website is slow. ScanFix isolates the exact DOM node, explains why the browser thread blocked, and generates the framework code patch to fix it.
From finding to verified deployment.
Four disciplined stages designed to eliminate guesswork and prevent regressions.
Deterministic Evidence
No vague scorecards. ScanFix provides the exact DOM selector, raw response headers, timing waterfall, and DOM subtree context for every defect.
selector: "header.site-header > div.hero-banner > img.hero-img" issue: "Unoptimized large image blocking Largest Contentful Paint (4.8s)" severity: "CRITICAL"
Root-Cause Synthesis
The AI investigation copilot contextualizes the failure against modern frameworks. It distinguishes root causes from downstream symptoms.
hypotheses: [ "Missing width/height causing layout shift (CLS: 0.28)", "Render-blocking critical script in <head> delaying LCP paint by 1.2s" ]
Actionable Framework Diffs
Review concrete framework patches for Next.js, React, Astro, or WordPress. Open automated, verified GitHub Pull Requests with server-side approval gates.
- <img src="/images/hero.jpg" alt="Hero banner" /> + <Image src="/images/hero.webp" priority fetchPriority="high" alt="Hero banner" />
Immediate Re-Audit & Gate Check
Re-audit modified endpoints via the shipcheck CLI or GitHub Actions quality gate. Mathematically prove issues are resolved before merging.
$ shipcheck gate --url https://staging.myapp.com --min-score 85 ✓ Quality Gate PASSED: Overall 91% (LCP: 1.6s, CLS: 0.02, A11y: 94%)
Integrates with your existing workflow.
shipcheck CLI
Terminal binary for developers and CI/CD pipelines. Run audits, inspect findings, and enforce quality gate thresholds on every push.
npm i -g @scanfix/shipcheckGitHub PR Automation
Create verified pull requests directly from approved AI fix proposals. Server-side approval guards ensure code is never pushed unprompted.
✓ Secret scanning & branch collision checksChrome Extension (MV3)
Trigger on-demand audits directly on your active browser tab. Zero broad permissions (`<all_urls>` omitted) and cryptographic pairing.
Explore Extension DetailsTest your stack right now.
Create a free developer account with 2 full audits included and full DOM evidence inspection enabled.