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SGSiteGraph

tenderly.co

Vercel Security Checkpoint

Last scanned Jul 26, 2026, 5:18 AM

77

Overall score

Fair

Summary

This website uses Astro hosted on AWS behind Vercel CDN. SEO is fair (60/100) and accessibility is excellent (90/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Missing meta description.

United States
Hosted on AWS

Top issues to fix

10 issues found · 4 high priority

  • Missing Strict-Transport-Security header

    Security

    Add HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.

  • Missing Content-Security-Policy header

    Security

    Add a CSP to control which sources can run scripts — the strongest single defense against XSS.

  • Missing meta description

    SEO

    Add a ~150-character meta description to control your search-result snippet and lift click-through rate.

  • No H1 heading found

    SEO

    Add exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.

  • Missing X-Content-Type-Options header

    Security

    Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.

  • Missing X-Frame-Options header

    Security

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

+4 more issues — details in the sections below.

60

SEO

5 issue(s) found

100

Performance

103 ms

65

Security

HTTPS & header checks

90

Accessibility

1 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Meta tags

Title
Vercel Security Checkpoint
Description
Canonical
Language
en
Charset
utf-8
Viewport
width=device-width, initial-scale=1
Robots meta
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
—
og:description
—
og:type
—
og:url
—

Twitter Card

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

Technologies

Detected frameworks, languages, and tools.

Astro

Hosting & CDN

Hosting provider
AWS
CDN provider
Vercel
IP address
76.76.21.21
ASN
AS16509 (AMAZON-02 - Amazon.com, Inc., US)

DNS records

TypeValue
A
  • 76.76.21.21
AAAA—
MX
  • aspmx.l.google.com
  • alt1.aspmx.l.google.com
  • aspmx2.googlemail.com
  • alt2.aspmx.l.google.com
  • aspmx3.googlemail.com
TXT—
NS
  • ns-cloud-b3.googledomains.com
  • ns-cloud-b2.googledomains.com
  • ns-cloud-b1.googledomains.com
  • ns-cloud-b4.googledomains.com
CAA—
CNAME—
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
Let's Encrypt
Subject
tenderly.co
Valid from
Jun 26, 2026
Valid to
Sep 24, 2026
Days until expiry
60
SAN domains
tenderly.co

Security headers

  • Strict-Transport-SecurityMissing
  • Content-Security-PolicyMissing
  • X-Frame-OptionsMissing
  • X-Content-Type-OptionsMissing
  • Referrer-PolicyMissing
  • Permissions-PolicyMissing

Compression: none · 0 cookie(s) observed

Content & assets

Headings

H1 0 · H2 0 · H3 0

Links

0 internal · 1 external · 1 broken

Images

0 total · 0 missing alt

Scripts / Styles

1 scripts · 0 stylesheets

JS / CSS size

25.5 KB · 3.2 KB

Page size

33.0 KB

Robots.txt & Sitemap

robots.txt
Found
Disallow rules
25
sitemap.xml
Found
URLs in sitemap
25

SEO issues

  • Missing meta description
  • Missing canonical link
  • No H1 heading found
  • No structured data (JSON-LD) found
  • Missing OpenGraph tags

Accessibility issues

  • No H1 heading found

Scan details

Requested URL
https://tenderly.co
Final URL
https://tenderly.co
HTTP status
429
HTTP version
HTTP/2
Response time
103 ms
HTML size
33.0 KB
Redirect chain
https://tenderly.co

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does tenderly.co use?
tenderly.co is built with Astro.
Is tenderly.co secure (HTTPS)?
Yes. tenderly.co uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 24, 2026.
Who hosts tenderly.co?
tenderly.co is hosted on AWS, behind Vercel CDN.
What is tenderly.co's SEO score?
tenderly.co scored 60/100 for SEO in the latest analysis (fair).
What is tenderly.co's overall website score?
tenderly.co has an overall SiteGraph score of 77/100, combining SEO, performance, security, and accessibility.