Certified Website Score for
flow.acertine.com
Create professional invoices in seconds, get paid 3x faster. Perfect for freelancers and small businesses. Start your free trial today.
First audit: November 27, 2025•Last audit: December 7, 2025
86
98Website Quality
70Trust & Security
89PageSpeed
Score trend
Latest audit — December 7, 2025
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.
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Website Quality
1902
98/100
1902
Site Quality
Title
Flow - Effortless Invoicing for Freelancers
43 chars (ideal 30–60)
Meta Description
Create professional invoices in seconds, get paid 3x faster. Perfect for freelancers and small businesses. Start your free trial today.
135 chars (ideal 120–160)
Favicon
https://flow.acertine.com/favicon-flow/favicon-96x96.png
present
Viewport meta
width=device-width, initial-scale=1
correct (width=device-width, initial-scale=1)
robots.txt
User-Agent: *
Allow: /
Disallow: /admin/
Disallow: /main/
Disallow: /api/
Disallow: /auth/
Sitemap: https://flow.acertine.com/sitemap.xml
perfect (User-agent + Allow + Sitemap)
Sitemap
https://flow.acertine.com/sitemap.xml
present
llms.txt
missing
missing (add llms.txt to describe LLM usage policies)
Headings
H1Billo Invoicing is now Flow
H2Everything you need to get paid
H2Create invoices in seconds
H3Professional templates
H3Automatic calculations
H3Custom branding
H2Loved by freelancers and small businesses
H2Why freelancers choose Flow
H2Simple, transparent pricing
H2Become a Founding Member
H2Frequently asked questions
H3How long is the free trial?
H3Can I cancel anytime?
H3What payment methods do you accept?
H3Is my data secure?
H3Do you offer customer support?
H3Can I customise my invoices?
H2Ready to get paid faster?
H2Stay Updated
H3Product
H3Resources
H3Founders
H3Company
correct structure
Schema.org JSON-LD
missing (consider Organization, Article, Product, or FAQPage schemas)
Canonical URL
https://flow.acertine.com
present
HTML lang
en
present
Character encoding
utf-8
present
Open Graph
Title
Flow - Effortless Invoicing for Freelancers
present
Description
Get paid faster with beautiful, professional invoices
present
Image
https://flow.acertine.com/img/opengraph/homepage.png
present
URL
https://flow.acertine.com
present
Type
website
present
Twitter Cards
Card Type
summary_large_image
present
Title
Flow - Effortless Invoicing for Freelancers
present
Description
Get paid faster with beautiful, professional invoices
present
Image
https://flow.acertine.com/img/opengraph/homepage.png
present
Trust & Security
502
70/100
502
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://*.clerk.com https://*.clerk.dev https://*.accounts.dev https://clerk.accounts.dev https://clerk.acertine.com https://www.googletagmanager.com https://www.googleadservices.com https://googleads.g.doubleclick.net https://static.ads-twitter.com https://clerk-telemetry.com https://*.stripe.com https://js.stripe.com https://pay.google.com https://datafa.st; style-src 'self' 'unsafe-inline' https://fonts.googleapis.com https:/...
Frame Protection
X-Frame-Options: SAMEORIGIN
MIME Type Protection
X-Content-Type-Options: nosniff
Domain Trust
Domain Age
0 years
Registrar
Spaceship, Inc.
Country
IS
Infrastructure
Provider
Cloudflare
PageSpeed
8718
89/100
8718
48
Performance
92
SEO
96
Best Practices
96
Accessibility
Performance
48/100Largest Contentful Paint
4.0s
2.5s4.0s
First Contentful Paint
1.2s
1.8s3.0s
Total Blocking Time
5.7s
200ms400ms
Cumulative Layout Shift
0.00
0.100.25
Speed Index
13.8s
3.4s5.4s
SEO
92/100Page isn’t blocked from indexing
Document has a `<title>` element
Document has a meta description
Page has successful HTTP status code
Links do not have descriptive text
Links are crawlable
robots.txt is valid
Document has a valid `hreflang`
Document has a valid `rel=canonical`
Best Practices
96/100Uses 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
Browser errors were logged to the console
No issues in the `Issues` panel in Chrome Devtools
Accessibility
96/100`[aria-*]` attributes match their roles
`[aria-hidden="true"]` is not present on the document `<body>`
`[role]`s have all required `[aria-*]` attributes
`[role]` values are valid
`[aria-*]` attributes have valid values
`[aria-*]` attributes are valid and not misspelled
Buttons have an accessible name
`[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
Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
`[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 have a discernible name
No element has a `[tabindex]` value greater than 0
Touch targets have sufficient size and spacing.
Heading elements appear in a sequentially-descending order
Document has a main landmark.
Deprecated ARIA roles were not used
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