Tsoden
Public audit for line9.ai

Fast revenue-leak triage

Line9 is 2 fixes away from more trial signups.

The site is usable but probably leaking qualified visitors because important buyer and machine-readable signals are incomplete.

Read from 5 live pages · metadata, crawlability, trust, CTA, schema, sitemap, robots, llms.txt

Questions about this audit? Reply to the email or write to us — a human answers same day.

2 fixable leaks4/8 selling signals live11/13 checks passed

The complete, prioritized plan to fix all 2 leaks above and win more trial signups — written for Line9, delivered instantly.

Book a free 30-min call See what's leaking ↓

What buyers and AI/search engines see right now

Pages checked55 read in full
How we read itRead as crawlers doSame view buyers & bots get
Response time571msUnder the 2.5s target
Checks verified11/132 need fixing

Diagnostics

Full technical analysis

36 checks across six areas — search visibility, AI & answer engines, performance, security, conversion and trust — each measured against Line9's live site.

27 pass 4 warn 5 fail

Findability

12/12 pass · 100/100
Page title
36 chars
Pass
Meta description
131 chars
Pass
Single H1 heading
present (4/5 pages)
Pass
Heading structure (H1–H3)
H1:1 H2:9 H3:13
Pass
Canonical tag
present
Pass
Indexable by search
indexable
Pass
Mobile viewport
set
Pass
Language declared
en
Pass
Image alt text
0/4 missing alt
Pass
Content depth
1,071 words
Pass
XML sitemap
found
Pass
robots.txt
found
Pass

AI & Answer Engines

5/5 pass · 100/100
Structured data (Schema.org)
softwareapplication, organization, faqpage, question
Pass
FAQ / Q&A schema
present
Pass
Open Graph (social preview)
4/4 tags
Pass
Twitter / X card
present
Pass
llms.txt (AI summary)
found
Pass

Performance

4/5 pass · 78/100
Server response time
571 ms
Pass
HTML page weight
32.2 KB
Pass
Compression (gzip/brotli)
enabled
Pass
Render-blocking scripts
1 blocking / 3 scripts
Issue
Browser caching
cache-control set
Pass

Security

2/2 pass · 54/100
HTTPS / SSL
enabled
Pass
HSTS
missing
Warning
Content-Security-Policy
missing
Warning
X-Content-Type-Options
missing
Warning
Clickjacking protection
missing
Warning
No mixed content
clean
Pass

Conversion

2/4 pass · 45/100
Clear value proposition
found: “Keep Mermaid but fix the layout.”
Pass
Primary call-to-action
not found
Issue
Easy contact / booking
not found
Issue
Visible pricing signal
found: “Pricing”
Pass

Trust

2/4 pass · 43/100
Social proof
not found
Issue
Risk reversal
found: “cancel anytime”
Pass
Legal / privacy pages
privacy
Pass
Analytics installed
none detected
Issue

Priorities

Top Leaks To Fix First

Ranked by revenue impact. Each one is something users — or an AI answer engine — need to see and currently can't. Fixing the top few moves your score the most.

01

Direct conversion CTA

Put a clear "Start free trial" button above the fold so a visitor can start a free trial in one tap.

02

Contact or booking path

Make it easy to start a free trial from the homepage — a visible form, booking link, or tap-to-call number.

Conversion evidence

How The Page Sells

4 of 8 of the buying-decision signals we could verify are on your site today. The page shows 4 of 8 buying-decision elements. Adding the missing ones is the most direct way to convert more of the visitors you already get.

Below is the breakdown: what's already working (with the exact text quoted from your page as proof), and the highest-impact additions to win more trial signups — in priority order.

Scope: an automated scan of the 5 pages we could read across your site. Every “found” item quotes the exact text on your page so you can verify it. It doesn't judge copy quality or design.

Selling well (detected, with proof)

  • Clear value proposition (headline) — found: “Keep Mermaid but fix the layout.”
  • Specific, quantified result — found: “9 k”
  • Risk reversal (trial / guarantee / no card) — found: “cancel anytime” (on /pricing)
  • Visible pricing / 'starting at' anchor — found: “Pricing”

Highest-impact additions to sell more

  • Action-oriented primary CTA — Place one clear action button above the fold (e.g. Start free, Book a demo).
  • Social proof (testimonial / customers / rating) — Add a testimonial, customer logo, star rating, or an 'N customers' proof point near the top.
  • Easy lead-capture path — Give an easy capture path: short form, booking link, or contact route from the first screen.
  • Objection handling (FAQ) — Answer the top 3-5 buyer objections in an FAQ to remove hesitation before the CTA.

Deliverable

Your complete fix pack is ready

We've already done the full work-up for Line9 — every fix written out, with copy and code ready to paste. Here's what's inside:

Complete fix plan (every issue, step by step)

1. Direct conversion CTA

Put a clear "Start free trial" button above the fold so a visitor can start a free trial in one tap.

  1. Place one primary button above the fold with action text (e.g. the suggested CTA below).
  2. Repeat the same CTA after the proof section and in the footer.
  3. Make the button visually dominant — one accent colour used only for the primary action.

2. Contact or booking path

Make it easy to start a free trial from the homepage — a visible form, booking link, or tap-to-call number.

  1. Add a visible booking link, short form, or tap-to-call number on the first screen.
  2. Keep the form to 3 fields max; every extra field drops completion.
  3. Confirm submissions with a clear success state, not a silent reload.

Done-for-you assets — copy & paste

SEO title
Where to paste: Replace the <title> tag inside your page <head>.
Line9 — Enhance Your Mermaid Diagrams
Meta description
Where to paste: In <head>, set <meta name="description" content="…"> to this (replace the old one).
Transform your Mermaid diagrams with Line9's superior layout and typography. Experience better presentation—try it now!
H1 — main page heading
Where to paste: Make this the single <h1> at the top of the homepage (real text, not an image).
Transform Your Mermaid Diagrams with Line9

— or one of these —
- Elevate Your Mermaid Experience
- Revolutionize Your Diagram Layout
Primary CTA button
Where to paste: Use as the main button above the fold; repeat it after your proof/services section.
Get Started
JSON-LD structured data (Organization)
Where to paste: Paste this entire block right before </head> (or before </body>).
<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "Organization",
  "name": "Line9",
  "url": "https://line9.ai/",
  "description": "Line9 is a powerful rendering engine that improves the layout and typography of Mermaid diagrams.",
  "makesOffer": [
    {
      "@type": "Offer",
      "itemOffered": {
        "@type": "Service",
        "name": "Advanced Mermaid Rendering Engine"
      }
    },
    {
      "@type": "Offer",
      "itemOffered": {
        "@type": "Service",
        "name": "CLI Integration for Easy Access"
      }
    },
    {
      "@type": "Offer",
      "itemOffered": {
        "@type": "Service",
        "name": "Cross-Platform Compatibility (macOS, Linux, Windows)"
      }
    },
    {
      "@type": "Offer",
      "itemOffered": {
        "@type": "Service",
        "name": "Enhanced Layout and Typography"
      }
    },
    {
      "@type": "Offer",
      "itemOffered": {
        "@type": "Service",
        "name": "No Markup Changes Required"
      }
    }
  ]
}
</script>

Page-by-page findings

PageWhat to fix
/looks healthy
/pricinglooks healthy
/diagramno H1 heading
/clilooks healthy
/bloglooks healthy

Action order

48-Hour Fix Plan

  • Put a clear "Start free trial" button above the fold so a visitor can start a free trial in one tap.
  • Make it easy to start a free trial from the homepage — a visible form, booking link, or tap-to-call number.

Why it matters

The fastest users do not read every page. They scan the first screen, trust signals, pricing cues and how easy it is to start a free trial. Missing signals make the offer harder to understand and easier to ignore.

Packages

Turn this into more trial signups

You've seen the leaks. Most owners start with the €49 full report — the same fixes we'd implement for €199, written out so you can do them yourself. Want it hands-off? Step up a tier.

Do it yourselfFree

The complete evidence report and the prioritized, step-by-step plan for Line9 — every fix written out with copy & code ready to paste. It is on this page. Nothing to buy, nothing to unlock.

Read the full plan ↑
Done-for-you — 48h€199

We implement the highest-impact fixes for Line9 — metadata, schema, CTA, llms.txt, trust signals — in 48 hours. You keep every bit of the lift, no lock-in.

Have us do it — €199
Ongoing monitor€499/mo

Weekly re-checks of Line9 + drift alerts so the fixes compound and never silently slip back.

Start monitoring

Not sure which fits? Book a free 30-min call and we'll tell you straight. · 48-hour turnaround · no lock-in · every claim verified.

Verification

Evidence Snapshot

Every signal below was read from your live site — nothing is estimated. We checked 5 pages; “couldn’t verify” means a signal needs JavaScript to read and we won’t guess.

What we read

TitleLine9 — Keep Mermaid, fix the layout
Meta description131 chars
H1 heading Found 4/5
Structured data Found

Crawl & AI files

robots.txt Found
sitemap.xml Found
llms.txt (AI) Found
Response time571ms

Pages we checked

/
Line9 — Keep Mermaid, fix the layout
Read
/pricing
Pricing — Line9
Read
/diagram
Diagram editor — Line9
Read
/cli
Install the line9 CLI — line9 CLI download
Read
/blog
Notebook — Line9
Read

Vragen over de bevindingen? Reply to the email, or reach us directly — we answer same day.

Email

Who we are

Tsoden — a full-service web studio

We don't just audit — we build and rank websites end-to-end. Web development & design, plus SEO & AEO, so your business shows up in Google and in AI answers like ChatGPT, Perplexity and Gemini. This report is where we start; we can implement every fix below and grow your visibility on a full-service basis.

Web development & redesign — fast, conversion-first sites
SEO — rank in Google for what your buyers actually search
AEO — get found & cited by AI answer engines (ChatGPT, Perplexity, Gemini)
Ongoing monitoring & growth — we keep it improving
Work with Tsoden →or email support@tsoden.ai

Curious how a competitor scores?

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Disclaimer

This service is a marketing and informational tool based on public website signals. It is not legal, financial, tax, investment, security, or professional advice. Scores and recommendations are estimates, not guarantees of revenue, rankings, AI visibility, deliverability, or business outcomes. You remain responsible for reviewing, approving, and implementing any changes and for complying with laws that apply to your business.

Full disclaimer · Terms · Privacy

This audit is from 6 Aug 2026 — we re-run it fresh when you order Line9 · Grade B · 75/100
Done-for-you — €199 Book a free 30-min call