Speed Insights
Incomplete capture
Missing LCP, TBT, CLS
https://nervabio.com
From nervabio.com
LCP
N/A
Largest paint
TBT
N/A
Blocking time
CLS
N/A
Layout shift
87
out of 100
87
out of 100
80/92 rule points
100
out of 100
76/76 rule points
91
out of 100
86/94 rule points
70
out of 100
77/110 rule points
Category point breakdown
Biggest score-losing checks
Publish sitemap.xml
Why this needs attention
The sitemap file was not reachable.
A sitemap helps search engines discover the landing page and related public pages sooner.
Recommended correction
Evidence
HTTP 404 returned for sitemap_xml.
Priority
Priority 7: fix during launch polish.
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: 34.
Priority
Priority 13: fix during launch polish.
Fix Prompt
Add trust signals
Why this needs attention
The page does not expose detectable proof, customer, review, security, or credibility signals.
Trust signals reduce hesitation when strangers see the product for the first time.
Recommended correction
Evidence
Detected 0 trust-signal keyword occurrence(s).
Priority
Priority 16: lower-risk cleanup after urgent launch blockers.
Fix Prompt
Improve detectable color 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
6 of 100 rendered text color sample(s) missed WCAG contrast targets. Worst rendered ratio: 1.
Priority
Priority 20: lower-risk cleanup after urgent launch blockers.
Fix Prompt
Fix runtime browser errors
Why this needs attention
The rendered page produced console or uncaught JavaScript errors.
Runtime errors can break forms, CTAs, animations, tracking, or responsive behavior even when the static HTML looks fine.
Recommended correction
Evidence
Detected 2 console error(s) and 0 uncaught page error(s) during render.
Priority
Priority 15: fix during launch polish.
Fix Prompt
SEO / AEO
Severity mix: 0 critical, 6 high, 3 medium, 2 low.
Security
Severity mix: 2 critical, 3 high, 0 medium, 0 low.
No failed checks in this category.
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: 0 critical, 6 high, 3 medium, 2 low.
Accessibility
Severity mix: 0 critical, 3 high, 5 medium, 0 low.
Security
Severity mix: 2 critical, 3 high, 0 medium, 0 low.
No failed checks in this category.
Design
Severity mix: 0 critical, 3 high, 6 medium, 2 low.
Failed checks
These checks need attention.
sitemap.xml reachability
Why this needs attention
The sitemap file was not reachable.
A sitemap helps search engines discover the landing page and related public pages sooner.
Recommended correction
Evidence
HTTP 404 returned for sitemap_xml. Failed: earned 0 of 12 points.
How FreeScan evaluates this check (opens in a new tab)Priority
Priority 7: fix during launch polish.
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
6 of 100 rendered text color sample(s) missed WCAG contrast targets. Worst rendered ratio: 1. 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.
Fix Prompt
Trust signals
Why this needs attention
The page does not expose detectable proof, customer, review, security, or credibility signals.
Trust signals reduce hesitation when strangers see the product for the first time.
Recommended correction
Evidence
Detected 0 trust-signal keyword occurrence(s). Failed: earned 0 of 10 points.
How FreeScan evaluates this check (opens in a new tab)Priority
Priority 16: lower-risk cleanup after urgent launch blockers.
Fix Prompt
Spacing consistency
Why this needs attention
The page exposes few consistent spacing signals in class or inline styles.
Consistent spacing helps the page feel deliberate and easier to scan.
Recommended correction
Evidence
Detected 0 spacing class/style signal(s). Failed: earned 0 of 7 points.
How FreeScan evaluates this check (opens in a new tab)Priority
Priority 25: lower-risk cleanup after urgent launch blockers.
Fix Prompt
Runtime console health
Why this needs attention
The rendered page produced console or uncaught JavaScript errors.
Runtime errors can break forms, CTAs, animations, tracking, or responsive behavior even when the static HTML looks fine.
Recommended correction
Evidence
Detected 2 console error(s) and 0 uncaught page error(s) during render. Failed: earned 0 of 7 points.
How FreeScan evaluates this check (opens in a new tab)Priority
Priority 15: 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: 34. Failed: earned 0 of 9 points.
How FreeScan evaluates this check (opens in a new tab)Priority
Priority 13: fix during launch polish.
Fix Prompt
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.
