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Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
92
GRADE
A
FIX
0
REVIEW
3
PASS
6
INFO
0
Probed from Sao Paulo, Brazil
302 Found
Checks
9
6 PASS 3 REVIEW
C
Crawlability
Action
robots.txt present, sitemap with 0 URLs
REVIEW
robots.txt present, sitemap with 0 URLs
Info::
robots.txt is present
Got: 10240 bytes
Info::
sitemap.xml is present
Warning::
sitemap.xml contains invalid XML
Search engines may not be able to parse the sitemap. Fix XML validation errors.
Warning::
sitemap.xml is empty — no URLs found
An empty sitemap provides no value. Add <url> entries for your pages.
Info::
robots.txt does not reference a sitemap
Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap.

Search engines may not be able to parse the sitemap. Fix XML validation errors.

Why this matters

An unparseable sitemap is silently ignored by Google — the URLs it advertises are never queued for crawl.

Learn more ▾

Google's sitemap parser is strict about XML validity. A single unescaped `&` or unclosed tag invalidates the whole file. Run your sitemap through a validator (Search Console's Sitemaps report flags it) and fix the offending entry. Most generators escape correctly; mistakes usually come from manually-written entries.

Source: sitemaps.org / Google Search Central

An empty sitemap provides no value. Add <url> entries for your pages.

Why this matters

An empty sitemap signals 'no content to index' to Google — actively harmful versus having no sitemap at all.

Learn more ▾

Google compares URLs in the sitemap against URLs it has crawled. An empty sitemap on a site with thousands of pages signals abandonment. Either populate it correctly (most CMSes auto-generate) or delete the file and let Google crawl normally.

Source: Google Search Central / sitemaps.org

Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap.

Why this matters

robots.txt omits Sitemap: directive — crawlers must fetch /sitemap.xml by convention; reliable but missing the explicit hint.

Source: sitemaps.org

robots.txt 200 OK
Size 10240 B Sitemaps referenced 0 User-agents Blocking No — crawling allowed
<!doctype html>
<!-- Made in Framer · framer.com ✨ -->
<!-- Published Apr 20, 2026, 12:22 PM UTC -->
<html lang="en-US">
<head>
	<meta charset="utf-8">
	
	
	<script>try{if(localStorage.get("__framer_force_showing_editorbar_since")){const n=document.createElement("link");n.rel = "modulepreload";n.href="https://framer.com/edit/init.mjs";document.head.appendChild(n)}}catch(e){}</script>
	<!-- Start of headStart -->
    <!-- Snippet: legacy-headStart -->
<script src="https://cdn.amplitude.com/libs/analytics-browser-2.12.0-min.js.gz"></script>

<script src="https://cdn.amplitude.com/libs/plugin-session-replay-browser-1.7.0-min.js.gz"></script>


<!-- HubSpot -->
<script type="text/javascript" id="hs-script-loader" async defer src="//js.hs-scripts.com/8443689.js"></script>

<!-- Google tag (gtag.js) for Google Analytics -->
<script async src="https://www.googletagmanager.com/gtag/js?id=G-XDQWKTB16G"></script>
<script>
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  gtag('js', new Date());

  gtag('config', 'G-XDQWKTB16G');
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<!-- SnippetEnd: legacy-headStart -->

    <!-- End of headStart -->
	<meta name="viewport" content="width=device-width">
	<meta name="generator" content="Framer 1067533">
	<title>Turn documentation into your product’s knowledge system | GitBook</title>
    <meta name="description" content="GitBook is a technical documentation platform that connects your docs, product and users into a self-improving knowledge loop that answers user questions and identifies knowledge gaps. Docs-as-code support &amp; AI insights included.">
    <meta name="framer-search-index" content="https://framerusercontent.com/sites/nNji44mQfYtH9VMKskPg2/searchIndex-inIMsRXiWPYi.json">
    <meta name="framer-search-index-fallback" content="https://framerusercontent.com/sites/nNji44mQfYtH9VMKskPg2/searchIndex-vpXls4K951l9.json">
    <meta name="framer-html-plugin" content="disable">
    <link href="https://framerusercontent.com/images/93a6peqhbHQaWP67zttmrKDazq4.png" rel="icon" media="(prefers-color-scheme: light)">
    <link href="https://framerusercontent.com/images/93a6peqhbHQaWP67zttmrKDazq4.png" rel="icon" media="(prefers-color-scheme: dark)">
    <link rel="apple-touch-icon" href="https://framerusercontent.com/images/RixubGcwFjRRIx4k36fKy7kV8Y.png">
    <!-- Open Graph / Facebook -->
    <meta property="og:type" content="website">
    <meta property="og:title" content="Turn documentation into your product’s knowledge system | GitBook">
    <meta property="og:description" content="GitBook is a technical documentation platform that connects your docs, product and users into a self-improving knowledge loop that answers user questions and identifies knowledge gaps. Docs-as-code support &amp; AI insights included.">
    <meta property="og:image" content="https://framerusercontent.com/assets/1IBeoRkP2RzVeGtGFLDk6w0lmEQ.png">
    <!-- Twitter -->
    <meta name="twitter:card" content="summary_large_image">
    <meta name="twitter:title" content="Turn documentation into your product’s knowledge system | GitBook">
    <meta name="twitter:description" content="GitBook is a technical documentation platform that connects your docs, product and users into a self-improving knowledge loop that answers user questions and identifies knowledge gaps. Docs-as-code support &amp; AI insights included.">
    <meta name="twitter:image" content="https://framerusercontent.com/assets/1IBeoRkP2RzVeGtGFLDk6w0lmEQ.png">
	
	<style data-framer-font-css>/* cyrillic */
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/* latin-ext */
@font-face {
  font-family: 'Geist Mono';
  font-style: normal;
  font-weight: 400;
  src: url(https://fonts.gstatic.com/s/geistmono/v4/or3nQ6H-1_WfwkMZI_qYFrkdmgPn.woff2) format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
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/* latin */
@font-face {
  font-family: 'Geist Mono';
  font-style: normal;
  font-weight: 400;
  src: url(https://fonts.gstatic.com/s/geistmono/v4/or3nQ6H-1_WfwkMZI_qYFrcdmg.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
/* cyrillic */
@font-face {
  font-family: 'Geist Mono';
  font-style: normal;
  font-weight: 600;
  src: url(https://fonts.gstatic.com/s/geistmono/v4/or3nQ6H-1_WfwkMZI_qYFrMdmgPn.woff2) format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
/* latin-ext */
@font-face {
  font-family: 'Geist Mono';
  font-style: normal;
  font-weight: 600;
  src: url(https://fonts.gstatic.com/s/geistmono/v4/or3nQ6H-1_WfwkMZI_qYFrkdmgPn.woff2) format('woff2');
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}
/* latin */
@font-face {
  font-family: 'Geist Mono';
  font-style: normal;
  font-weight: 600;
  src: url(https://fonts.gstatic.com/s/geistmono/v4/or3nQ6H-1_WfwkMZI_qYFrcdmg.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
/* cyrillic */
@font-face {
  font-family: 'Geist Mono';
  font-style: normal;
  font-weight: 900;
  src: url(https://fonts.gstatic.com/s/geistmono/v4/or3nQ6H-1_WfwkMZI_qYFrMdmgPn.woff2) format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
/* latin-ext */
@font-face {
  font-family: 'Geist Mono';
  font-style: normal;
  font-weight: 900;
  src: url(https://fonts.gstatic.com/s/geistmono/v4/or3nQ6H-1_WfwkMZI_qYFrkdmgPn.woff2) format('woff2');
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}
/* latin */
@font-face {
  font-family: 'Geist Mono';
  font-style: normal;
  font-weight: 900;
  src: url(https://fonts.gstatic.com/s/geistmono/v4/or3nQ6H-1_WfwkMZI_qYFrcdmg.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
/* vietnamese */
@font-face {
  font-family: 'Space Mono';
  font-style: normal;
  font-weight: 400;
  src: url(https://fonts.gstatic.com/s/spacemono/v17/i7dPIFZifjKcF5UAWdDRYE58RWq7.woff2) format('woff2');
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}
/* latin-ext */
@font-face {
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  font-style: normal;
  font-weight: 400;
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}
/* latin */
@font-face {
  font-family: 'Space Mono';
  font-style: normal;
  font-weight: 400;
  src: url(https://fonts.gstatic.com/s/spacemono/v17/i7dPIFZifjKcF5UAWdDRYEF8RQ.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face { font-family: "General Sans Variable Variable Bold"; src: url("https://framerusercontent.com/assets/e1k37xkXdS9Q44MSWSRA9disQ.woff2"); font-display: swap; font-style: normal; font-weight: 700 }
@font-face { font-family: "General Sans Variable Variable Bold Italic"; src: url("https://framerusercontent.com/assets/cv0T8sYmEDDhefCsjuLEPAFbVA.woff2"); font-display: swap; font-style: italic; font-weight: 700 }
@font-face { font-family: "ABC Favorit Bold"; src: url("https://framerusercontent.com/assets/W8a3dfvGM3NpHDSLEUaoVi842zk.woff2"); font-display: swap; font-style: normal; font-weight: 700 }
@font-face { font-family: "ABC Favorit Medium"; src: url("https://framerusercontent.com/assets/7gkmoeTdo7oHehnOqSx1EUKfIs.otf"); font-display: swap; font-style: normal; font-weight: 500 }
@font-face { font-family: "ABC Favorit Regular"; src: url("https://framerusercontent.com/assets/YWayyt1Iml0BqgKTFrny98dORY.otf"); font-display: swap; font-style: normal; font-weight: 400 }
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@font-face { font-family: "General Sans Variable Bold"; src: url("https://framerusercontent.com/assets/jBnvoOD78v5pbEwCx33OGgRK2g.woff"); font-display: swap; font-style: normal; font-weight: 700 }
@font-face { font-family: "Inter"; src: url("https://framerusercontent.com/assets/5vvr9Vy74if2I6bQbJvbw7SY1pQ.woff2"); font-display: swap; font-style: normal; font-weight: 400; unicode-range: U+0460-052F, U+1C80-1C88, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F }
@font-face { font-family: "Inter"; src: url("https://framerusercontent.com/assets/EOr0mi4hNtlgWNn9if640EZzXCo.woff2"); font-display: swap; font-style: normal; font-weight: 400; unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116 }
@font-face { font-family: "Inter"; src: url("https://framerusercontent.com/assets/Y9k9QrlZAqio88Klkmbd8VoMQc.woff2"); font-display: swap; font-style: normal; font-weight: 400; unicode-range: U+1F00-1FFF
sitemap.xml 200 OK
Type URL Set URLs 0 entries Valid XML No
B
TLS Certificate Expiry & Recommendations
77 days until leaf cert expires — 3 issues to address
REVIEW

Certificate validity

77
days left
0d 30d 60d 90d+

Recommended actions

  • Enable HSTS: Strict-Transport-Security: max-age=31536000; includeSubDomains
  • Enable DNSSEC on your domain for DNS spoofing protection
  • Enable OCSP stapling on your TLS server to remove a CA roundtrip and protect user privacy
B
CDN & Delivery
Cloudflare
REVIEW
Cloudflare
Info::
Site is served via Cloudflare CDN (edge: GRU)
Got: cf-ray: 9efef1638854d4c0-GRU
CDN Detected: Cloudflare
Provider Cloudflare Evidence cf-ray: 9efef1638854d4c0-GRU
A+
DNS Records
2 A records, 6 ms lookup
PASS
2 A records, 6 ms lookup
Info::
Resolves to 2 IPv4 address(es)
Got: 104.18.40.47, 172.64.147.209
Info::
Has 2 IPv6 (AAAA) record(s)
Got: 2606:4700:4407::6812:282f, 2606:4700:4402::ac40:93d1
Info::
2 nameserver(s) configured
Got: dahlia.ns.cloudflare.com, hugh.ns.cloudflare.com
Info::
5 mail exchanger(s) configured
Info::
CAA records not checked
CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.
Info::
SPF record present in TXT
Info::
DNS resolution time: 6 ms
Got: 6 ms
A104.18.40.47, 172.64.147.209
AAAA2606:4700:4407::6812:282f, 2606:4700:4402::ac40:93d1
CNAME—
NSdahlia.ns.cloudflare.com, hugh.ns.cloudflare.com
MX
10 aspmx.l.google.com
20 alt2.aspmx.l.google.com
20 alt1.aspmx.l.google.com
30 aspmx2.googlemail.com
30 aspmx3.googlemail.com
TXT
8277640
8lncom12tnn1so22eu2gvaoe9q
google-site-verification=9HmRew5KGY83Wzed-UhP71FdHHbV3qoUKP5h_Jenjeo
google-site-verification=jOO29_Act4pfhfArsLE_txCdET-NuQQyqp1aAG5-H8s
google-site-verification=mAI4k7A4RaCrAbrsgv7m8w6VPx0irEHUO3bHYEPPwdI
openai-domain-verification=dv-5coTbUFl8eIUWr3rQkpd9lw2
SPF v=spf1 a mx include:_spf.google.com include:sendgrid.net include:stspg-customer....
CAALookup not available with standard resolver
Resolved in 6 ms

CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.

Why this matters

Informational: CAA (Certification Authority Authorization) records weren't checked in this scan.

A
Redirect Chain
1 redirect(s), 94 ms total
PASS
1 redirect(s), 94 ms total
Info::
Single redirect
Got: https://gitbook.io → https://www.gitbook.com/ (302)
Info::
WWW normalization redirect
Info::
Uses 302 (temporary) redirect
If permanent, use 301 instead.
Got: https://gitbook.io
Info::
Cross-domain redirect detected

https://gitbook.io

27 ms · HTTP/1.1

302

https://www.gitbook.com/

67 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://gitbook.io30227 msHTTP/1.1cloudflare
2https://www.gitbook.com/20067 msHTTP/1.1cloudflare

See the visual redirect chain in the HTTP Probe tab →

If permanent, use 301 instead.

Why this matters

302 (Found) is for genuinely temporary redirects — if this redirect is permanent, switch to 301 to preserve SEO equity.

Learn more ▾

Search engines treat 302 as temporary, keeping the original URL indexed and not transferring full link equity to the destination. Use 301 (Moved Permanently) for permanent redirects (HTTP→HTTPS, www-vs-non-www, URL restructures).

Source: Google Search Central

A+
IPv6 Readiness
IPv6 reachable (2 ms)
PASS
IPv6 reachable (2 ms)
Info::
IPv6 is configured and reachable at 2606:4700:4407::6812:282f, 2606:4700:4402::ac40:93d1
Got: 2 ms connect
IPv6 Ready
AAAA Records 2606:4700:4407::6812:282f, 2606:4700:4402::ac40:93d1 Connection Reachable (2 ms)
A+
URL Variants
www/non-www, trailing slash, HTTP→HTTPS
PASS
www/non-www, trailing slash, HTTP→HTTPS
Info::
www/non-www redirect configured correctly (preferred: non-www)
Info::
HTTP correctly 301-redirects to HTTPS

www / non-www

302https://www.gitbook.io/
200https://gitbook.io/

Preferred variant: non-www

HTTP → HTTPS

301http://gitbook.io/ → https://gitbook.io/

Consistent

A+
Domain Intelligence
gitbook.io — via Cloudflare, Inc, 12 years, 2 months old
PASS
gitbook.io — via Cloudflare, Inc, 12 years, 2 months old
Info::
Domain registered until Mar 30, 2031 (5 years remaining)
Info::
Registrar: Cloudflare, Inc
Info::
Registrar lock is enabled
Domain cannot be transferred without explicit unlock from the registrar. This protects against unauthorized transfers.
Domain expiry

1748 days

March 30, 2031

SSL certificate

77 days

Issued by Google Trust Services

Domain age

12 years, 2 months

Registered March 30, 2014

DNSSEC

Status unknown

Protects against DNS spoofing

Hosting

Unknown

2606:4700:4407::6812:282f

Registrar

Cloudflare, Inc

Locked 2 NS records
Expiry timeline
Today
+1 year
Domain expiry SSL expiry Danger zone (≤30 days)
Registrar Cloudflare, Inc
Created March 30, 2014 (12 years, 2 months ago)
Expires March 30, 2031 (5 years)
Last Updated October 24, 2025
Name Servers hugh.ns.cloudflare.com, dahlia.ns.cloudflare.com
Registrant GitBook Inc.
Hosting
IP Address 2606:4700:4407::6812:282f
Data source: whois (1.6s)

Domain cannot be transferred without explicit unlock from the registrar. This protects against unauthorized transfers.

Why this matters

Registrar lock (clientTransferProhibited et al.) prevents unauthorized domain transfers — strongest defense against domain hijacking.

Source: ICANN / domain-security best practice

A+
HTTP Probe Timing
Total 24 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
5 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
1 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
8 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
25 ms
Total Time Total request time from DNS lookup through full response.
25 ms

Connection waterfall

DNS Lookup 5 ms TCP Connect 1 ms TLS Handshake 8 ms Server Processing 11 ms Content Transfer 0 ms
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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