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https://iana.org

Performance

· 14 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
83
GRADE
B
FIX
3
REVIEW
3
PASS
7
INFO
1

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

Mobile Desktop
91
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
82
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
92
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
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.

1.30 s

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

1.30 s

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.

0.064

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

1.46 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.

1.30 s

Page Load Progression

375 ms
750 ms
1.1 s
1.5 s
1.9 s
2.2 s
2.6 s
3.0 s
Checks
14
7 PASS 3 REVIEW 3 FIX
D
Page Weight Budget
Action
2.2 MB transferred, 18 requests
FIX
2.2 MB transferred, 18 requests
Info::
Page weighs 2.6 MB (2.2 MB transferred)
Info::
Fonts are 2.0 MB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 2.0 MB
Info::
18 HTTP requests
Info::
Estimated 0.45 g CO2 per page load
2.2 MB / 2.4 MB budget
2.2 MB transferred
18 requests
0.45 g CO2 per page load
Fonts 2.0 MiB 90%
JavaScript 176.0 KiB 8%
CSS 22.8 KiB 1%
Other 8.7 KiB 0%
Images 5.8 KiB 0%
HTML 2.2 KiB 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Approaching limit

Subset fonts to include only used characters, or switch to system font stacks.

Why this matters

Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).

Source: web.dev font loading

D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (2.2 MiB of 2.2 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
Page Weight Inventory
Action
18 resources · 2.2 MB · 100 KB savings available
FIX
18 resources · 2.2 MB · 100 KB savings available
Warning::
Page weight 1.2 MB over 1MB target
Got: 2.2 MB Expected: ≤ 1 MB
Info::
~100 KB of savings available
Warning::
17 third-party resources (100% of weight)
Info::
1 resources over 200KB
18 resources · 2.2 MiB · 17 third-party 1.2 MiB over 1MB target
Font 90% · 2.0 MiB
JavaScript 8% · 176.0 KiB
CSS 1% · 22.8 KiB
Image 1% · 14.2 KiB
Document 0% · 2.5 KiB
Other 0% · 0 B

~100.4 KiB of savings available

Remove unused JavaScript: 100.4 KiB
B
Image Optimization
5 images, 0 KB saveable
REVIEW
5 images, 0 KB saveable
Info::
All images are well-optimized
5 images 6 KB
0 oversized -0 KB
4 legacy format
0 missing dimensions CLS risk
B
JS Bundles
5 scripts, 100 KB unused
REVIEW
5 scripts, 100 KB unused
Warning::
https://www.google.com/cse/static/element/b33cba58...: 48 KB unused (49%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cse.google.com/adsense/search/async-ads.js: 32 KB unused (73%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.iana.org/static/_js/jquery.js: 21 KB unused (76%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 100 KB
100 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.google.com/cse/static/element/b33cba5881f68fbf/cse_element__es.js?usqp=CAI%3D99 KB48 KB (49%)✓3rd
https://cse.google.com/adsense/search/async-ads.js44 KB32 KB (73%)✓3rd
https://www.iana.org/static/_js/jquery.js29 KB21 KB (76%)✓3rd
https://www.iana.org/static/_js/iana.js1 KB—✓3rd
https://cse.google.com/cse.js?cx=010470622406686203020:boq_dnseony4 KB—✓3rd

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

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+
JS Execution Cost
No JS execution data
PASS
No JS execution data
Info::
No significant JS execution detected

Main Thread Breakdown

Other 39% Script Evaluation 27% Style & Layout 20% Script Parsing & Compilation 8%
A+
Font Loading
1 fonts (1998 KB)
PASS
1 fonts (1998 KB)
Info::
1 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

1

1998 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 1.5 s 2.0 s FCP 1.3 s LCP 1.3 shttps://www.iana.org/static/_img/2025.01/fonts/NotoSans-Latin.ttfNotoSans-Latin.ttf https://www.iana.org/static/_img/2025.01/fonts/NotoSans-Latin.ttf — 2.0 MiB — 1.1 s — font-display: swap
NotoSans-Latin.ttf ttf swap
Size 1998 KB
Load time 1.1 s
Start 936 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
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)

Fixing the unchecked items could save ~1598 KB and ~3196 ms

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 Caching
max-age=345600 (4 days)
PASS
max-age=345600 (4 days)
Info::
Cache-Control header is set
Got: max-age=345600
Info::
Effective TTL: 4 days (max-age=345600)
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

max-age=345600

DirectiveValueMeaning
max-age345600Cache for 4 days
Effective TTL: 345600 seconds
Network Waterfall
18 requests over 2191ms
INFO
0 ms 500 ms 1.0 s 1.5 s 2.0 s FCP 1.3 s LCP 1.3 shttps://iana.org// https://iana.org/ — 301 — 313 B — 295 ms — http/1.1https://www.iana.org/www.iana.org/ https://www.iana.org/ — 200 — 2.2 KiB — 293 ms — http/1.1https://www.iana.org/static/_css/2025.01/iana_website.csswww.iana.org/static/_css/2025.01/ia... https://www.iana.org/static/_css/2025.01/iana_website.css — 200 — 11.8 KiB — 97 ms — http/1.1https://www.iana.org/static/_js/jquery.jswww.iana.org/static/_js/jquery.js https://www.iana.org/static/_js/jquery.js — 200 — 28.6 KiB — 194 ms — http/1.1https://www.iana.org/static/_js/iana.jswww.iana.org/static/_js/iana.js https://www.iana.org/static/_js/iana.js — 200 — 1.2 KiB — 289 ms — http/1.1https://cse.google.com/cse.js?cx=010470622406686203020:boq_dnseonycse.google.com/cse.js?cx=0104706224... https://cse.google.com/cse.js?cx=010470622406686203020:boq_dnseony — 200 — 4.0 KiB — 90 ms — h2https://www.iana.org/static/_img/2022/iana-logo-homepage.svgwww.iana.org/static/_img/2022/iana-... https://www.iana.org/static/_img/2022/iana-logo-homepage.svg — 200 — 3.0 KiB — 95 ms — http/1.1https://www.iana.org/static/_img/2025.01/fonts/NotoSans-Latin.ttfwww.iana.org/static/_img/2025.01/fo... https://www.iana.org/static/_img/2025.01/fonts/NotoSans-Latin.ttf — 200 — 2.0 MiB — 1.1 s — http/1.1https://www.google.com/cse/static/element/b33cba5881f68fbf/cse_element__es.js?usqp=CAI%3Dwww.google.com/cse/static/element/b... https://www.google.com/cse/static/element/b33cba5881f68fbf/cse_element__es.js?usqp=CAI%3D — 200 — 98.7 KiB — 97 ms — h3https://www.google.com/cse/static/element/b33cba5881f68fbf/default_v6+es.csswww.google.com/cse/static/element/b... https://www.google.com/cse/static/element/b33cba5881f68fbf/default_v6+es.css — 200 — 9.7 KiB — 66 ms — h3https://www.google.com/cse/static/style/look/v6/default.csswww.google.com/cse/static/style/loo... https://www.google.com/cse/static/style/look/v6/default.css — 200 — 1.2 KiB — 60 ms — h3https://cse.google.com/adsense/search/async-ads.jscse.google.com/adsense/search/async... https://cse.google.com/adsense/search/async-ads.js — 200 — 43.6 KiB — 53 ms — h2data:image/svg+xml;utf8,<svg width='24' height='24' viewBox='0 0 24 24' fill='none' xmlns='http://w…w… data:image/svg+xml;utf8,<svg width='24' height='24' viewBox='0 0 24 24' fill='none' xmlns='http://w… — -1 — 0 B — 0 ms — https://www.google.com/cse/static/css/v2/clear.pngwww.google.com/cse/static/css/v2/cl... https://www.google.com/cse/static/css/v2/clear.png — 200 — 1.0 KiB — 24 ms — h3https://www.google.com/cse/static/images/1x/es/branding.pngwww.google.com/cse/static/images/1x... https://www.google.com/cse/static/images/1x/es/branding.png — 200 — 1.6 KiB — 27 ms — h3https://clients1.google.com/generate_204clients1.google.com/generate_204 https://clients1.google.com/generate_204 — 204 — 117 B — 70 ms — h2https://ep1.adtrafficquality.google/getconfig/sodar?sv=200&tid=afs&tv=1234567890&st=env&sjk=vSikEuOyQRiV4IkkOa+vsg==&sde=1ep1.adtrafficquality.google/getconf... https://ep1.adtrafficquality.google/getconfig/sodar?sv=200&tid=afs&tv=1234567890&st=env&sjk=vSikEuOyQRiV4IkkOa+vsg==&sde=1 — -1 — 0 B — 0 ms — https://www.iana.org/static/_img/bookmark_icon.icowww.iana.org/static/_img/bookmark_i... https://www.iana.org/static/_img/bookmark_icon.ico — 200 — 8.4 KiB — 96 ms — http/1.1
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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