Certified Website Score for
preflight.sh
A CLI tool that scans your codebase for launch readiness before you deploy to production. Catches security issues, SEO problems, and common mistakes.
First audit: December 22, 2025•Last audit: June 17, 2026
94
94Website Quality
95Trust & Security
94PageSpeed
Score trend
Latest audit — June 17, 2026
Deep, transparent insight into how this score is built: PageSpeed vitals, on‑page quality signals, and trust & security checks — all broken down into clear, verifiable items you can act on.
👇Click to open / close
👇Click to open / close
Website Quality
1902
94/100
1902
Site Quality
Title
Preflight.sh | Stop embarrassing yourself in production.
56 chars (ideal 30–60)
Meta Description
A CLI tool that scans your codebase for launch readiness before you deploy to production. Catches security issues, SEO problems, and common mistakes.
149 chars (ideal 120–160)
Favicon
https://preflight.sh/assets/images/favicon.ico
present
Viewport meta
width=device-width, initial-scale=1
correct (width=device-width, initial-scale=1)
robots.txt
User-agent: *
Allow: /
Sitemap: https://preflight.sh/sitemap.xml
perfect (User-agent + Allow + Sitemap)
Sitemap
https://preflight.sh/sitemap.xml
present
llms.txt
present
present
Headings
H1Stop embarrassing yourself in production.
H3Or hand it to your coding agent
H2Why use this?
H2What it checks
H2Works with your stack
H3✓ Backend
H3✓ Frontend
H3✓ CMS
H3✓ Static Generators
H2It also checks 70+ services
H3✓ Payments
H3✓ Error Tracking
H3✓ Email & Newsletters
H3✓ Analytics
H3✓ Auth
H3✓ Chat
H3✓ Notifications
H3✓ Infrastructure
H3✓ Storage & CDN
H3✓ Search & SEO
H3✓ AI & LLMs
H3✓ Cookie Consent
skipped heading levels (skipped from H1 to H3)
Schema.org JSON-LD
Software App: Preflight.sh
1 schema found
Canonical URL
https://preflight.sh/
present
HTML lang
en
present
Character encoding
utf-8
present
Open Graph
Title
Preflight.sh | Stop embarrassing yourself in production.
present
Description
A CLI tool that scans your codebase for launch readiness before you deploy to production. Catches security issues, SEO problems, and common mistakes.
present
Image
https://preflight.sh/assets/images/og-image.png
present
URL
https://preflight.sh/
present
Type
website
present
Twitter Cards
Card Type
summary_large_image
present
Title
Preflight.sh | Stop embarrassing yourself in production.
present
Description
A CLI tool that scans your codebase for launch readiness before you deploy to production. Catches security issues, SEO problems, and common mistakes.
present
Image
https://preflight.sh/assets/images/og-image.png
present
Trust & Security
601
95/100
601
Security Headers
HTTPS
HTTPS enabled
HTTP Strict Transport Security
Strict-Transport-Security: max-age=31536000; includeSubDomains
Content Security Policy
Content-Security-Policy: default-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval' https://l.preflight.sh; style-src 'self' 'unsafe-inline' https://use.typekit.net https://p.typekit.net; font-src 'self' https://use.typekit.net; img-src 'self' data: https:; connect-src 'self' https://l.preflight.sh; form-action 'self'; frame-ancestors 'none'; base-uri 'self'
Frame Protection
X-Frame-Options: SAMEORIGIN
MIME Type Protection
X-Content-Type-Options: nosniff
Domain Trust
Domain Age
no domain age records found
Registrar
no registrar record found
Country
Unknown
Infrastructure
Provider
no hosting or CDN provider detected
PageSpeed
8907
94/100
8907
65
Performance
100
SEO
100
Best Practices
94
Accessibility
Performance
65/100Largest Contentful Paint
6.1s
2.5s4.0s
First Contentful Paint
4.8s
1.8s3.0s
Total Blocking Time
0ms
200ms400ms
Cumulative Layout Shift
0.00
0.100.25
Speed Index
5.4s
3.4s5.4s
SEO
100/100Page isn’t blocked from indexing
Document has a `<title>` element
Document has a meta description
Page has successful HTTP status code
Links have descriptive text
Links are crawlable
robots.txt is valid
Image elements have `[alt]` attributes
Document has a valid `hreflang`
Document has a valid `rel=canonical`
Best Practices
100/100Uses HTTPS
Avoids deprecated APIs
Avoids third-party cookies
Allows users to paste into input fields
Avoids requesting the geolocation permission on page load
Avoids requesting the notification permission on page load
Displays images with correct aspect ratio
Serves images with appropriate resolution
Page has the HTML doctype
Properly defines charset
No browser errors logged to the console
No issues in the `Issues` panel in Chrome Devtools
Accessibility
94/100`[aria-*]` attributes match their roles
`[aria-hidden="true"]` is not present on the document `<body>`
`[aria-*]` attributes have valid values
`[aria-*]` attributes are valid and not misspelled
Buttons have an accessible name
Image elements have `[alt]` attributes
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
ARIA attributes are used as specified for the element's role
`[aria-hidden="true"]` elements do not contain focusable descendents
Elements use only permitted ARIA attributes
Background and foreground colors do not have a sufficient contrast ratio.
Document has a `<title>` element
`<html>` element has a `[lang]` attribute
`<html>` element has a valid value for its `[lang]` attribute
Links are distinguishable without relying on color.
Links have a discernible name
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
Touch targets have sufficient size and spacing.
Heading elements are not in a sequentially-descending order
Document has a main landmark.
Instant Audit
Start Free AnalysisSee your site the way search engines feel it
Launch a free crawl in under 30 seconds and get a ranked hit-list of fixes that lift speed, visibility, and trust.