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https://www.osintatlas.io

Performance

· 21 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
93
GRADE
A
FIX
1
REVIEW
3
PASS
15
INFO
2

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

Mobile Desktop
88
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
91
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
96
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
100
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

924 ms

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

964 ms

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

0 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.200

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

1.06 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

964 ms

Page Load Progression

3.7 s
7.3 s
11.0 s
14.7 s
18.4 s
22.0 s
25.7 s
29.4 s
Checks
21
15 PASS 3 REVIEW 1 FIX
D
HTTP Caching
Action
no-store (uncacheable)
FIX
no-store (uncacheable)
Info::
Cache-Control: no-store prevents all caching
Intentional for dynamic content, but increases server load for every page view.
Got: private, no-store
Info::
ETag present — enables conditional (304) responses
Cache-Control

private, no-store

DirectiveValueMeaning
private—Only browser cache, not CDN/proxy
no-store—Never cache this response
B
Third-Party Impact
42% third-party, 0 ms blocking
REVIEW
42% third-party, 0 ms blocking
Info::
Third-party code accounts for 42% of page weight (48.6 KiB of 114.9 KiB)
Info::
Third-party blocking time is low (0 ms)
58%
42%
First-party Third-party
B
JS Execution Cost
569ms total JS execution
REVIEW
569ms total JS execution
Warning::
https://www.osintatlas.io/: 334ms CPU time
Info::
https://www.osintatlas.io/landing/landing.js?v=cov...: 146ms CPU time
Info::
Unattributable: 89ms CPU time

Main Thread Breakdown

Other 40% Style & Layout 30% Rendering 14% Script Evaluation 13%
ScriptTotalScriptingParse/CompileParty
https://www.osintatlas.io/334ms1ms0ms1st
https://www.osintatlas.io/landing/landing.js?v=covpop1146ms55ms0ms1st
Unattributable89ms1ms0ms1st
B
Server-Timing Observability
No Server-Timing header found
REVIEW
No Server-Timing header found
Info::
No Server-Timing header found
Server-Timing exposes backend timing breakdowns to browser DevTools (e.g., `db: 45ms; render: 120ms; cache: 2ms`). Useful for diagnosing slow pages without backend log access. Most modern frameworks (Next.js, Cloudflare Workers, Fastly) emit it automatically; absence on a managed platform usually means telemetry headers are stripped at the edge.
A+
Page Weight Budget
115 KB transferred, 18 requests
PASS
115 KB transferred, 18 requests
Info::
Page weighs 332 KB (115 KB transferred)
Info::
18 HTTP requests
Info::
Estimated 0.02 g CO2 per page load
115 KB / 2.4 MB budget
115 KB transferred
18 requests
0.02 g CO2 per page load
Fonts 47.3 KiB 41%
CSS 33.5 KiB 29%
JavaScript 16.8 KiB 15%
HTML 14.0 KiB 12%
Images 1.4 KiB 1%
Other 1.3 KiB 1%
Other 496 B 0%
0 2.4 MB 4.9 MB
Under budget
A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+
Image Optimization
1 images, 0 KB saveable
PASS
1 images, 0 KB saveable
Info::
All images are well-optimized
1 images 1 KB
0 oversized -0 KB
1 legacy format
0 missing dimensions CLS risk
A+
Font Loading
1 fonts (47 KB)
PASS
1 fonts (47 KB)
Info::
1 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

1

47 KB total

Render-blocking

0

of 1

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s FCP 924 ms LCP 964 mshttps://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa1ZL7W0Q5nw.woff2UcC73FwrK3iLTeHuS_nVMrM... https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa1ZL7W0Q5nw.woff2 — 47.3 KiB — 68 ms — font-display: swap
UcC73FwrK3iLTeHuS_nVMrM... woff2 swap
Size 47 KB
Load time 68 ms
Start 302 ms
Risk FOUT — text flashes from fallback to web font
Optimization checklist
  • Preload critical fonts (priority=high)
  • Use woff2 format for all fonts
  • Set font-display to swap, optional, or fallback
  • Subset large fonts (≤100 KB each)
A+
JS Bundles
6 scripts, 0 KB unused
PASS
6 scripts, 0 KB unused
0 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.osintatlas.io/auth/theme-icon.js1 KB—✓1st
https://www.osintatlas.io/landing/landing.js?v=covpop12 KB—✓1st
https://www.osintatlas.io/landing/type.js?v=11 KB—✓1st
https://www.osintatlas.io/coverage/coverage.js2 KB—✓1st
https://www.osintatlas.io/auth/auth.js?v=cv1103a5 KB—✓1st
https://www.osintatlas.io/coverage/coverage-ux.js?v=cmp24 KB—✓1st
A+
Resource Caching
All resources properly cached
PASS
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+
Critical Rendering Path
No render-blocking resources
PASS
No render-blocking resources
Info::
No render-blocking resources detected
A+
Resource Hints
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
A+
HTTP/3 (QUIC)
HTTP/3 advertised via Alt-Svc
PASS
HTTP/3 advertised via Alt-Svc
Info::
HTTP/3 (QUIC) is supported
First-load mobile users on cellular networks see meaningful latency improvements with HTTP/3. The QUIC transport collapses TLS + TCP handshakes into one and recovers faster from packet loss.
A+
Document Compression
Document response uses brotli
PASS
Document response uses brotli
Info::
Main HTML response uses brotli (Content-Encoding: br)
Brotli is the best text-compression algorithm for general use, ~20% smaller than gzip on average (40% on smaller files). Modern browsers all support it.
A+
LCP Image Preload
LCP preload audit not available
PASS
LCP preload audit not available
Info::
LCP image preload audit not available for this scan
A+
Main HTML Cache-Control
Main HTML uses no-store -- correct for sensitive/dynamic content
PASS
Main HTML uses no-store -- correct for sensitive/dynamic content
Info::
Main HTML uses no-store -- correct for sensitive/dynamic content
Got: private, no-store
A+
Server Response Intelligence
2 server-response signal(s) detected
PASS
2 server-response signal(s) detected
Info::
`Vary` header declared: Cookie
The page declares a `Vary` header, telling downstream caches which request headers the response varies on. Critical for content-negotiated responses (compression, language, cookies, device class).
Info::
`ETag` present -- conditional GET supported
A
Page Weight Inventory
18 resources · 115 KB · 0 KB savings available
PASS
18 resources · 115 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 115 KB
Warning::
2 third-party resources (42% of weight)
18 resources · 114.9 KiB · 2 third-party Within 1MB page-weight target
Font 41% · 47.3 KiB
CSS 29% · 33.5 KiB
JavaScript 15% · 16.8 KiB
Document 12% · 14.0 KiB
Image 2% · 2.7 KiB
Other 0% · 496 B
A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Cloudflare

Asset Compression
No text asset hosts to measure
INFO
No text asset hosts to measure
Info::
No third-party or subdomain host served enough text assets to measure
Asset compression is measured per host, from one HEAD request against a sampled resource. Pages that serve all their JS and CSS from the document's own origin are covered by the document compression check instead.
Network Waterfall
18 requests over 459ms
INFO
0 ms 500 ms 1.0 s FCP 924 ms LCP 964 mshttps://www.osintatlas.io// https://www.osintatlas.io/ — 200 — 14.0 KiB — 103 ms — h3https://www.osintatlas.io/styles.css/styles.css https://www.osintatlas.io/styles.css — 200 — 14.3 KiB — 43 ms — h3https://www.osintatlas.io/auth/auth.css/auth/auth.css https://www.osintatlas.io/auth/auth.css — 200 — 2.0 KiB — 77 ms — h3https://www.osintatlas.io/auth/ui.css/auth/ui.css https://www.osintatlas.io/auth/ui.css — 200 — 2.0 KiB — 78 ms — h3https://www.osintatlas.io/landing/landing.css?v=covpop1/landing/landing.css?v=covpop1 https://www.osintatlas.io/landing/landing.css?v=covpop1 — 200 — 5.2 KiB — 74 ms — h3https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swapfonts.googleapis.com/css2?family=In... https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap — 200 — 1.2 KiB — 118 ms — h2https://www.osintatlas.io/theme-v2.css?v=abdd678e44/theme-v2.css?v=abdd678e44 https://www.osintatlas.io/theme-v2.css?v=abdd678e44 — 200 — 6.3 KiB — 68 ms — h3https://www.osintatlas.io/coverage/coverage-ux.css?v=cmp2/coverage/coverage-ux.css?v=cmp2 https://www.osintatlas.io/coverage/coverage-ux.css?v=cmp2 — 200 — 2.5 KiB — 79 ms — h3https://www.osintatlas.io/auth/theme-icon.js/auth/theme-icon.js https://www.osintatlas.io/auth/theme-icon.js — 200 — 1.4 KiB — 110 ms — h3https://www.osintatlas.io/landing/landing.js?v=covpop1/landing/landing.js?v=covpop1 https://www.osintatlas.io/landing/landing.js?v=covpop1 — 200 — 2.5 KiB — 74 ms — h3https://www.osintatlas.io/landing/type.js?v=1/landing/type.js?v=1 https://www.osintatlas.io/landing/type.js?v=1 — 200 — 1.5 KiB — 75 ms — h3https://www.osintatlas.io/coverage/coverage.js/coverage/coverage.js https://www.osintatlas.io/coverage/coverage.js — 200 — 2.3 KiB — 77 ms — h3https://www.osintatlas.io/auth/auth.js?v=cv1103a/auth/auth.js?v=cv1103a https://www.osintatlas.io/auth/auth.js?v=cv1103a — 200 — 4.7 KiB — 81 ms — h3https://www.osintatlas.io/coverage/coverage-ux.js?v=cmp2/coverage/coverage-ux.js?v=cmp2 https://www.osintatlas.io/coverage/coverage-ux.js?v=cmp2 — 200 — 4.5 KiB — 79 ms — h3https://www.osintatlas.io/mark-dark.svg/mark-dark.svg https://www.osintatlas.io/mark-dark.svg — 200 — 1.4 KiB — 35 ms — h3https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa1ZL7W0Q5nw.woff2fonts.gstatic.com/s/inter/v20/UcC73... https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa1ZL7W0Q5nw.woff2 — 200 — 47.3 KiB — 68 ms — h3https://www.osintatlas.io/api/auth/me/api/auth/me https://www.osintatlas.io/api/auth/me — 401 — 496 B — 27 ms — h3https://www.osintatlas.io/favicon.svg/favicon.svg https://www.osintatlas.io/favicon.svg — 200 — 1.3 KiB — 34 ms — h3
HTML JavaScript CSS Images Fonts XHR/Fetch Other
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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