Speed Insights
Grade A
92% performance
https://zernio.com
From zernio.com
LCP
964ms
Largest paint
TBT
253ms
Blocking time
CLS
0.03
Layout shift
80
out of 100
91
out of 100
101/111 rule points
82
out of 100
62/76 rule points
72
out of 100
68/94 rule points
74
out of 100
81/110 rule points
Category point breakdown
Biggest score-losing checks
Add common public security headers
Why this needs attention
Several basic browser protection headers were not visible.
These headers reduce avoidable browser-side risk and show a baseline of care before launch.
Recommended correction
Evidence
Detected 1 of 5 common public security controls. Present: strict-transport-security. Missing: content-security-policy, x-content-type-options, frame protection (x-frame-options or content-security-policy frame-ancestors), referrer-policy.
Priority
Priority 5: fix before sharing the page publicly.
Fix Prompt
Fix rendered axe accessibility violations
Why this needs attention
The rendered page has accessibility rule violations detected by axe-core.
axe checks the actual browser-rendered page, so these issues can affect people using keyboards, screen readers, or other assistive technology.
Recommended correction
Evidence
axe found 1 violation rule(s), including 1 serious or critical rule(s). Top rules: color-contrast (22).
Priority
Priority 5: fix before sharing the page publicly.
Affected elements
<a class="inline-flex items-center justify-center gap-1 rounded-xl font-medium transition-colors px-4 py-3 text-base leading-5 bg-coral text-white hover:bg-coral/90" href="/signup"
Elements must meet minimum color contrast ratio thresholds
getlate.dev is now zernio.com
Fix Prompt
Add a useful meta description
Why this needs attention
The page does not expose a strong short summary for search and answer engines.
A missing description makes previews weaker when early users share or find the page.
Recommended correction
Evidence
Meta description is 191 characters.
Priority
Priority 3: fix before sharing the page publicly.
Fix Prompt
Fix rendered layout ergonomics
Why this needs attention
The browser-rendered page has layout or tap-target issues.
Horizontal overflow and tiny tap targets make the page feel broken on real devices, especially for mobile visitors.
Recommended correction
Evidence
Horizontal overflow: 0px. Small tap targets: 149.
Priority
Priority 13: fix during launch polish.
Affected elements
Zernio homepage
Quickstart
SDKs
CLI
Fix Prompt
Improve rendered speed signals
Why this needs attention
The browser-rendered page shows slow or heavy speed signals.
Slow pages lose impatient visitors and make every SEO, social, and paid-traffic visit work harder.
Recommended correction
Evidence
DOMContentLoaded: 1768ms. Load complete: 1770ms. First contentful paint: 964ms. Resources: 73. Scripts: 32. Images: 20. Third-party origins: 4. Transfer: not available.
Priority
Priority 14: fix during launch polish.
Fix Prompt
SEO / AEO
Severity mix: 1 critical, 7 high, 3 medium, 1 low.
Security
Severity mix: 2 critical, 3 high, 0 medium, 0 low.
Accessibility
Severity mix: 0 critical, 3 high, 5 medium, 0 low.
Design
Severity mix: 0 critical, 3 high, 6 medium, 2 low.
SEO / AEO
Severity mix: 1 critical, 7 high, 3 medium, 1 low.
Accessibility
Severity mix: 0 critical, 3 high, 5 medium, 0 low.
Security
Severity mix: 2 critical, 3 high, 0 medium, 0 low.
Design
Severity mix: 0 critical, 3 high, 6 medium, 2 low.
Failed checks
These checks need attention.
Meta description
Why this needs attention
The page does not expose a strong short summary for search and answer engines.
A missing description makes previews weaker when early users share or find the page.
Recommended correction
Evidence
Meta description is 191 characters. Failed: earned 0 of 10 points.
How FreeScan evaluates this check (opens in a new tab)Priority
Priority 3: fix before sharing the page publicly.
Fix Prompt
Common security headers
Why this needs attention
Several basic browser protection headers were not visible.
These headers reduce avoidable browser-side risk and show a baseline of care before launch.
Recommended correction
Evidence
Detected 1 of 5 common public security controls. Present: strict-transport-security. Missing: content-security-policy, x-content-type-options, frame protection (x-frame-options or content-security-policy frame-ancestors), referrer-policy. Failed: earned 4 of 18 points from partial coverage.
How FreeScan evaluates this check (opens in a new tab)Priority
Priority 5: fix before sharing the page publicly.
Fix Prompt
Basic contrast
Why this needs attention
The scanner found text/background color pairs that may be hard to read, or could not verify contrast.
Low contrast makes a launch page feel less polished and can exclude users with low vision.
Recommended correction
Evidence
5 of 100 rendered text color sample(s) missed WCAG contrast targets. Worst rendered ratio: 2.32. Failed: earned 0 of 8 points.
How FreeScan evaluates this check (opens in a new tab)Priority
Priority 20: lower-risk cleanup after urgent launch blockers.
Affected elements
TypeScript
What's new
Let your agent set it up
zernio.ts
Fix Prompt
Rendered axe accessibility violations
Why this needs attention
The rendered page has accessibility rule violations detected by axe-core.
axe checks the actual browser-rendered page, so these issues can affect people using keyboards, screen readers, or other assistive technology.
Recommended correction
Evidence
axe found 1 violation rule(s), including 1 serious or critical rule(s). Top rules: color-contrast (22). Failed: earned 0 of 18 points.
How FreeScan evaluates this check (opens in a new tab)Priority
Priority 5: fix before sharing the page publicly.
Affected elements
<a class="inline-flex items-center justify-center gap-1 rounded-xl font-medium transition-colors px-4 py-3 text-base leading-5 bg-coral text-white hover:bg-coral/90" href="/signup"
Elements must meet minimum color contrast ratio thresholds
getlate.dev is now zernio.com
Fix Prompt
Text density
Why this needs attention
The page has too little or too much detectable text for a useful launch page.
Too little copy can leave visitors confused; too much copy can bury the value proposition.
Recommended correction
Evidence
Detected about 15103 visible word(s). General page range: 80-1800 words. Failed: earned 0 of 10 points.
How FreeScan evaluates this check (opens in a new tab)Priority
Priority 21: lower-risk cleanup after urgent launch blockers.
Fix Prompt
Rendered speed signals
Why this needs attention
The browser-rendered page shows slow or heavy speed signals.
Slow pages lose impatient visitors and make every SEO, social, and paid-traffic visit work harder.
Recommended correction
Evidence
DOMContentLoaded: 1768ms. Load complete: 1770ms. First contentful paint: 964ms. Resources: 73. Scripts: 32. Images: 20. Third-party origins: 4. Transfer: not available. Failed: earned 0 of 10 points.
How FreeScan evaluates this check (opens in a new tab)Priority
Priority 14: fix during launch polish.
Fix Prompt
Rendered layout ergonomics
Why this needs attention
The browser-rendered page has layout or tap-target issues.
Horizontal overflow and tiny tap targets make the page feel broken on real devices, especially for mobile visitors.
Recommended correction
Evidence
Horizontal overflow: 0px. Small tap targets: 149. Failed: earned 0 of 9 points.
How FreeScan evaluates this check (opens in a new tab)Priority
Priority 13: fix during launch polish.
Affected elements
Zernio homepage
Quickstart
SDKs
CLI
Fix Prompt
Page-level AEO readiness
Shared eligibility and content signals that affect every search and answer agent.
Index and citation eligibility
No general noindex directive was detected.
Snippet and answer controls
No general nosnippet or max-snippet:0 control was detected.
Canonical alignment
The canonical resolves to the scanned public URL.
Sitemap coverage and freshness
A sitemap index was found; this safe scan did not recursively fetch child sitemaps.
Structured data
Semantic schema score 25/100. Detected 1 JSON-LD block(s), 0 parse error(s), 5 graph node(s), and types HowTo, HowToStep, MonetaryAmount. No primary schema type matched the detected page role.
Public or paywalled content
No isAccessibleForFree structured-data value was detected.
Entity clarity
Entity alignment scored 85/100 for “The social media and messaging API for developers and AI agents.”. Title/H1 token overlap is 100%; description match detected; identity schema not detected.
Answer-ready visible text
Answerability scored 53/100 from 331 main-content words, 0 concise answer block(s), 2 question heading(s), 1 definition(s), 2 list(s), and 0 table(s).
Authorship and accountability
Authorship is not a universal requirement for the detected home page role.
Published or updated date
Freshness metadata is contextual for the detected home page role.
Supporting-source links
Supporting sources are contextual for the detected home page role and do not affect readiness.
Rendered content availability
Rendered audit completed with 237 visible text element(s).
Synthetic search-agent reachability
8 of 8 completed search/discovery User-Agent probes returned reachable content.
Optional LLM-readable summary
https://zernio.com/llms.txt returned HTTP 200; this is supplemental and does not determine AI-search eligibility.
OpenAIChatGPT searchOAI-SearchBotAI search
Robots: allowed by * allow: / · line 2
Probe: reachable · HTTP 200 · 100% parity
OpenAIOpenAI model trainingGPTBotModel training
Robots: allowed by * allow: / · line 2
Probe: not tested for this control
OpenAIChatGPT user fetchesChatGPT-UserUser-requested fetch
Robots: not applicable to user-requested fetches
Probe: not tested for this control
AnthropicClaude model trainingClaudeBotModel training
Robots: allowed by * allow: / · line 2
Probe: not tested for this control
AnthropicClaude searchClaude-SearchBotAI search
Robots: allowed by * allow: / · line 2
Probe: reachable · HTTP 200 · 100% parity
AnthropicClaude user fetchesClaude-UserUser-requested fetch
Robots: allowed by * allow: / · line 2
Probe: reachable · HTTP 200 · 100% parity
GoogleGoogle Search and AI featuresGooglebotSearch and discovery
Robots: allowed by * allow: / · line 2
Probe: reachable · HTTP 200 · 100% parity
GoogleGemini data use and groundingGoogle-ExtendedData-use policy control
Robots: allowed by * allow: / · line 2
Probe: not tested for this control
MicrosoftBing and CopilotBingbotSearch and discovery
Robots: allowed by * allow: / · line 2
Probe: reachable · HTTP 200 · 99% parity
PerplexityPerplexity searchPerplexityBotAI search
Robots: allowed by * allow: / · line 2
Probe: reachable · HTTP 200 · 100% parity
PerplexityPerplexity user fetchesPerplexity-UserUser-requested fetch
Robots: not applicable to user-requested fetches
Probe: not tested for this control
AppleSiri, Spotlight, and Safari searchApplebotSearch and discovery
Robots: allowed by * allow: / · line 2
Probe: reachable · HTTP 200 · 99% parity
AppleApple foundation-model trainingApplebot-ExtendedData-use policy control
Robots: allowed by * allow: / · line 2
Probe: not tested for this control
Mistral AIMistral searchMistralAI-IndexAI search
Robots: allowed by * allow: / · line 2
Probe: reachable · HTTP 200 · 100% parity
Mistral AIMistral user fetchesMistralAI-UserUser-requested fetch
Robots: allowed by * allow: / · line 2
Probe: reachable · HTTP 200 · 100% parity
MetaMeta AI model and product datameta-externalagentModel training
Robots: allowed by * allow: / · line 2
Probe: not tested for this control
MetaMeta AI user fetchesmeta-externalfetcherUser-requested fetch
Robots: allowed by * allow: / · line 2
Probe: reachable · HTTP 200 · 100% parity
AmazonAmazon model trainingAmazonbotModel training
Robots: allowed by * allow: / · line 2
Probe: not tested for this control
AmazonAlexa and Rufus searchAmzn-SearchBotAI search
Robots: allowed by * allow: / · line 2
Probe: reachable · HTTP 200 · 100% parity
AmazonAlexa user fetchesAmzn-UserUser-requested fetch
Robots: allowed by * allow: / · line 2
Probe: reachable · HTTP 200 · 100% parity
Common CrawlOpen web datasetsCCBotModel training
Robots: allowed by * allow: / · line 2
Probe: not tested for this control
Ready combines robots policy, a bounded synthetic User-Agent fetch, indexability, and snippet eligibility. Synthetic probes do not prove vendor-origin traffic. Purple preference states are training or data-use choices and do not lower the AEO score.
The image refreshes from FreeScan after a completed rescan. Clicking it always opens the newest public report saved for this exact scanned URL.
Scan evidence is included as untrusted data. The implementation brief instructs agents to verify findings before editing and to avoid destructive or speculative changes.
