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SGSiteGraph

knock.app

Knock | Customer engagement infrastructure

Last scanned Jul 31, 2026, 9:00 PM · 8 views

91

Overall score

Excellent

Summary

Product and customer messaging infrastructure for email, SMS, in-app, push, Slack, and MS Teams. This website uses Next.js behind Cloudflare CDN. SEO is good (85/100) and accessibility is excellent (100/100). Security scores excellent (90/100) and performance excellent (90/100). Top issue: Meta description longer than 160 characters.

Knock

Product and customer messaging infrastructure for email, SMS, in-app, push, Slack, and MS Teams. The most powerful notification system you'll never build.

175 Varick St, #413, New York, NY, 10014
11-50 employees

Top issues to fix

5 issues found

  • Missing X-Frame-Options header

    Security

    Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.

  • Meta description longer than 160 characters

    SEO

    Trim the meta description to under 160 characters to avoid truncation in search results.

  • robots.txt not found

    SEO

    Publish /robots.txt with a Sitemap: directive to guide crawlers.

  • sitemap.xml not found

    SEO

    Publish an XML sitemap and reference it from robots.txt to speed up page discovery.

  • 20 broken links on the page

    SEO

    Fix or remove broken links — they waste crawl budget and erode user trust.

85

SEO

3 issue(s) found

90

Performance

329 ms

90

Security

HTTPS & header checks

100

Accessibility

0 issue(s) found

Score history

-3 overall since Jul 24, 2026

Overall
91
SEO
85
Security
90
Performance
90
Accessibility
100

Organization

Company details published in this site's own structured data.

Knock

Product and customer messaging infrastructure for email, SMS, in-app, push, Slack, and MS Teams. The most powerful notification system you'll never build.

Employees
11-50
X (Twitter)GitHubLinkedInYouTube

Contact

Email, phone, and address published on this site's own pages.

Address
175 Varick St, #413, New York, NY, 10014

Meta tags

Title
Knock | Customer engagement infrastructure
Description
Knock is customer engagement infrastructure for your product, marketing, and transactional messaging. Activate your data, ship cross-channel messaging, and accelerate growth.
Canonical
https://knock.app
Language
en
Charset
utf-8
Viewport
width=device-width
Robots meta
index,follow
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
Knock | Customer engagement infrastructure
og:description
Knock is customer engagement infrastructure for your product, marketing, and transactional messaging. Activate your data, ship cross-channel messaging, and accelerate growth.
og:type
website
og:url
https://knock.app

Twitter Card

twitter:card
summary_large_image
twitter:title
—
twitter:description
—

Technologies

Detected frameworks, languages, and tools.

Next.js

Hosting & CDN

Hosting provider
—
CDN provider
Cloudflare
IP address
—
ASN
—

DNS records

TypeValue
A—
AAAA—
MX—
TXT—
NS—
CAA—
CNAME—
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
Google Trust Services
Subject
knock.app
Valid from
Jul 17, 2026
Valid to
Oct 16, 2026
Days until expiry
76
SAN domains
knock.app, e1.knock.app

Security headers

  • Strict-Transport-SecurityEnabled
  • Content-Security-PolicyEnabled
  • X-Frame-OptionsMissing
  • X-Content-Type-OptionsEnabled
  • Referrer-PolicyMissing
  • Permissions-PolicyMissing

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 11 · H3 4

Links

39 internal · 24 external · 20 broken

Images

68 total · 0 missing alt

Scripts / Styles

24 scripts · 4 stylesheets

JS / CSS size

687 B · 2.4 KB

Page size

403 KB

Robots.txt & Sitemap

robots.txt
Not found
Disallow rules
0
sitemap.xml
Not found
URLs in sitemap
0

SEO issues

  • Meta description longer than 160 characters
  • robots.txt not found
  • sitemap.xml not found

Accessibility issues

No accessibility issues detected.

Scan details

Requested URL
https://knock.app
Final URL
https://knock.app
HTTP status
200
HTTP version
HTTP/2
Response time
321 ms
HTML size
403 KB
Redirect chain
https://knock.app

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Frequently asked questions

What technology does knock.app use?
knock.app is built with Next.js.
Is knock.app secure (HTTPS)?
Yes. knock.app uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Oct 16, 2026.
Who hosts knock.app?
Hosting provider information for knock.app is not available yet.
What is knock.app's SEO score?
knock.app scored 85/100 for SEO in the latest analysis (great).
What is knock.app's overall website score?
knock.app has an overall SiteGraph score of 91/100, combining SEO, performance, security, and accessibility.
What company operates knock.app?
knock.app is operated by Knock. Product and customer messaging infrastructure for email, SMS, in-app, push, Slack, and MS Teams. The most powerful notification system you'll never build.
Has knock.app's score changed over time?
knock.app's overall score has declined by 3 points (from 94 to 91) since Jul 24, 2026.