AI readiness of zcal.co: 65/100

65/100

We checked zcal.co on 2026-10-18 with our free checker: six scored tests plus evidence for each finding. The score reflects the site on that date. The site may have changed after that date.

Test	Result	Points
llms.txt	No	0 of 15
JSON-LD schema on the homepage	No	0 of 20
Meta description	Yes	10 of 10
Text readable without JavaScript	Yes	20 of 20
Sitemap	Yes	10 of 10
AI crawlers allowed in robots.txt	8 of 8	25 of 25

Compared with Scheduling

zcal.co ranks 15 of 17 scheduling sites in this scan (ties share the order by domain name). The median score in this group is 85. 9 of 17 have an llms.txt file.

Findings with evidence

FixNo llms.txt

/llms.txt returns an HTML page (likely a catch-all), not markdown.

Fix: Create /llms.txt: a # title, a > one-line summary, then ## sections that list key pages as [name](url). Draft one free at checkaiready.com/llms-txt-generator.

FixNo JSON-LD structured data on the homepage

No <script type="application/ld+json"> block in the HTML we received.

Fix: Add an Organization (or LocalBusiness) JSON-LD block to the homepage with name, url, logo, and sameAs links. The $19 report includes a ready-to-paste block for your site.

ImproveNo language declared

<html> has no lang attribute.

Fix: Add lang to the <html> tag, for example <html lang="en">.

ImproveServer responded in 970 ms

Time to response headers from our checker. Final URL: https://zcal.co/

Fix: Slow responses can make crawlers give up. Add page caching or a CDN in front of the homepage.

16 checks passed or noted

PassGPTBot (OpenAI, training): allowed on /

User-Agent: *
Disallow: /*?via=*
Disallow: /cdn-cgi/
Group "*" has no rule for /.

PassOAI-SearchBot (OpenAI, ChatGPT search): allowed on /

User-Agent: *
Disallow: /*?via=*
Disallow: /cdn-cgi/
Group "*" has no rule for /.

PassChatGPT-User (OpenAI, live fetch for users): allowed on /

User-Agent: *
Disallow: /*?via=*
Disallow: /cdn-cgi/
Group "*" has no rule for /.

PassClaudeBot (Anthropic, training): allowed on /

User-Agent: *
Disallow: /*?via=*
Disallow: /cdn-cgi/
Group "*" has no rule for /.

PassClaude-SearchBot (Anthropic, Claude search): allowed on /

User-Agent: *
Disallow: /*?via=*
Disallow: /cdn-cgi/
Group "*" has no rule for /.

PassPerplexityBot (Perplexity, search index): allowed on /

User-Agent: *
Disallow: /*?via=*
Disallow: /cdn-cgi/
Group "*" has no rule for /.

PassGoogle-Extended (Google, Gemini training control): allowed on /

User-Agent: *
Disallow: /*?via=*
Disallow: /cdn-cgi/
Group "*" has no rule for /.

PassCCBot (Common Crawl, open dataset): allowed on /

User-Agent: *
Disallow: /*?via=*
Disallow: /cdn-cgi/
Group "*" has no rule for /.

PassTitle, 56 characters

<title>zcal – Beautiful scheduling pages your clients will love</title>

PassMeta description, 87 characters

content="Create scheduling pages that capture your brand&#x27;s look and feel. Sign up for free."

PassOpen Graph tags present

og:title: zcal – Beautiful scheduling pages your clients will love
og:description: Create scheduling pages that capture your brand&#x27;s look and feel. Sign up for free.
og:image: https://storage.googleapis.com/zcal-us-central-1/resources/og_image_v2.jpg

PassCanonical link set

<link rel="canonical" href="https://zcal.co/">

Pass1 H1 heading

<h1>Beautiful scheduling pages your clients will love</h1>

Pass5,102 characters of text without JavaScript

Text starts: "zcal – Beautiful scheduling pages your clients will love Pricing Help Login Sign up Beautiful scheduling pages your clients will love Modern, intuitive schedul…"

PassSitemap found, 173 URLs

robots.txt: Sitemap: https://zcal.co/sitemap.xml
GET https://zcal.co/sitemap.xml returned 200.

PassHTML size 290 KB, 71 script tags

1 render-blocking script in <head>: /_next/static/chunks/polyfills-42372ed130431b0a.js

Fix: Add defer or async to scripts in <head> that are not needed for first paint.

Is this your site? Run a fresh free check. Get the $19 deep report (up to 25 pages, 18 AI agents per path), or add an AI-ready badge after your check.

See how all 17 scheduling sites compare: common problems, real evidence and the full table.

Scoring: llms.txt 15, JSON-LD 20, meta description 10, readable text 20, sitemap 10, AI crawler access 25. Want this page changed or removed? Email [email protected].

AI crawler and llms.txt updates

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