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Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
89
GRADE
B
FIX
2
REVIEW
3
PASS
8
INFO
2

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

Mobile Desktop
80
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
97
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
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.

1.84 s

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

1.84 s

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

37 ms

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

0.000

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

2.49 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.

3.07 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
15
8 PASS 3 REVIEW 2 FIX
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 (305.2 KiB of 305.2 KiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

C
Image Optimization
Action
20 images, 0 KB saveable
REVIEW
20 images, 0 KB saveable
Warning::
https://www.ripe.net/static/images/ripe-ncc-logo-2... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.ripe.net/static/images/ripe-community-... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.ripe.net/static/images/rss.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
20 images 176 KB
0 oversized -0 KB
4 legacy format
3 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

B
JS Execution Cost
536ms total JS execution
REVIEW
536ms total JS execution
Info::
Unattributable: 249ms CPU time
Info::
https://www.ripe.net/: 129ms CPU time
Info::
https://www-analytics.ripe.net/matomo.js: 104ms CPU time
Info::
https://www-static.ripe.net/static/webcomponents/e...: 55ms CPU time
Warning::
Third-party scripts: 536ms (100% of total)

Main Thread Breakdown

Other 46% Script Evaluation 29% Style & Layout 16%
ScriptTotalScriptingParse/CompileParty
Unattributable249ms6ms0ms3rd
https://www.ripe.net/129ms2ms0ms3rd
https://www-analytics.ripe.net/matomo.js104ms93ms5ms3rd
https://www-static.ripe.net/static/webcomponents/embed-consent-v1.1.6.min.js55ms49ms1ms3rd
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Page Weight Budget
305 KB transferred, 33 requests
PASS
305 KB transferred, 33 requests
Info::
Page weighs 661 KB (305 KB transferred)
Info::
33 HTTP requests
Info::
Estimated 0.06 g CO2 per page load
305 KB / 2.4 MB budget
305 KB transferred
33 requests
0.06 g CO2 per page load
Images 175.6 KiB 58%
JavaScript 54.9 KiB 18%
CSS 26.1 KiB 9%
Fonts 24.8 KiB 8%
HTML 18.3 KiB 6%
Other 5.1 KiB 2%
Other 261 B 0%
Other 227 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+
Font Loading
1 fonts (25 KB)
PASS
1 fonts (25 KB)
Info::
1 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

1

25 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 FCP 1.8 s LCP 1.8 shttps://www.ripe.net/static/fonts/public-sans-latin-normal.woff2public-sans-latin-norma... https://www.ripe.net/static/fonts/public-sans-latin-normal.woff2 — 24.8 KiB — 30 ms — font-display: swap
public-sans-latin-norma... woff2 swap
Size 25 KB
Load time 30 ms
Start 1.5 s
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
4 scripts, 21 KB unused
PASS
4 scripts, 21 KB unused
Warning::
https://www-analytics.ripe.net/matomo.js: 21 KB unused (52%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 21 KB
21 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www-analytics.ripe.net/matomo.js41 KB21 KB (52%)✓3rd
https://www-static.ripe.net/static/webcomponents/embed-consent-v1.1.6.min.js6 KB—✓3rd
https://www.ripe.net/static/CACHE/js/js.a91a1190a5da.js7 KB—✓3rd
https://www-analytics.ripe.net/plugins/HeatmapSessionRecording/configs.php?idsite=1&trackerid=72b994&url=https%3A%2F%2Fwww.ripe.net%2F0 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

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
Page Weight Inventory
33 resources · 305 KB · 21 KB savings available
PASS
33 resources · 305 KB · 21 KB savings available
Info::
Within 1MB page-weight target
Got: 305 KB
Warning::
32 third-party resources (100% of weight)
33 resources · 305.2 KiB · 32 third-party Within 1MB page-weight target
Image 59% · 180.6 KiB
JavaScript 18% · 54.9 KiB
CSS 9% · 26.1 KiB
Font 8% · 24.8 KiB
Document 6% · 18.4 KiB
Other 0% · 488 B

~21.3 KiB of savings available

Remove unused JavaScript: 21.3 KiB
Network Waterfall
33 requests over 3692ms
INFO
0 ms 1.0 s 2.0 s 3.0 s FCP 1.8 s LCP 1.8 shttps://ripe.net// https://ripe.net/ — 301 — 77 B — 757 ms — h2https://www.ripe.net/www.ripe.net/ https://www.ripe.net/ — 200 — 18.3 KiB — 745 ms — h2https://www.ripe.net/static/fonts/public-sans-latin-normal.woff2www.ripe.net/static/fonts/public-sa... https://www.ripe.net/static/fonts/public-sans-latin-normal.woff2 — 200 — 24.8 KiB — 30 ms — h2https://www.ripe.net/static/CACHE/css/style.fb5531065752.csswww.ripe.net/static/CACHE/css/style... https://www.ripe.net/static/CACHE/css/style.fb5531065752.css — 200 — 26.1 KiB — 26 ms — h2https://www-static.ripe.net/static/webcomponents/embed-consent-v1.1.6.min.jswww-static.ripe.net/static/webcompo... https://www-static.ripe.net/static/webcomponents/embed-consent-v1.1.6.min.js — 200 — 6.0 KiB — 878 ms — h2https://www.ripe.net/static/images/ripe-ncc-logo-2025.svgwww.ripe.net/static/images/ripe-ncc... https://www.ripe.net/static/images/ripe-ncc-logo-2025.svg — 200 — 1.6 KiB — 31 ms — h2https://www.ripe.net/static/images/rss.svgwww.ripe.net/static/images/rss.svg https://www.ripe.net/static/images/rss.svg — 200 — 783 B — 27 ms — h2https://www.ripe.net/media/images/RIPE-Community-.2e16d0ba.format-webp.fill-1024x576-c100.webpwww.ripe.net/media/images/RIPE-Comm... https://www.ripe.net/media/images/RIPE-Community-.2e16d0ba.format-webp.fill-1024x576-c100.webp — 200 — 36.6 KiB — 16 ms — h3https://www.ripe.net/media/images/WhatsApp_Image_20.2e16d0ba.fill-720x405-c25.format-webp.webpwww.ripe.net/media/images/WhatsApp_... https://www.ripe.net/media/images/WhatsApp_Image_20.2e16d0ba.fill-720x405-c25.format-webp.webp — 200 — 32.2 KiB — 222 ms — h3https://www.ripe.net/static/favicons/site.webmanifestwww.ripe.net/static/favicons/site.w... https://www.ripe.net/static/favicons/site.webmanifest — 200 — 227 B — 19 ms — h3https://www.ripe.net/media/images/RIPE_84_NCC_BER.2e16d0ba.format-webp.fill-1024x576-c100.webpwww.ripe.net/media/images/RIPE_84_N... https://www.ripe.net/media/images/RIPE_84_NCC_BER.2e16d0ba.format-webp.fill-1024x576-c100.webp — 200 — 102.4 KiB — 20 ms — h3https://www.ripe.net/static/images/ripe-community-logo.svgwww.ripe.net/static/images/ripe-com... https://www.ripe.net/static/images/ripe-community-logo.svg — 200 — 1.2 KiB — 19 ms — h3https://www.ripe.net/static/CACHE/js/js.a91a1190a5da.jswww.ripe.net/static/CACHE/js/js.a91... https://www.ripe.net/static/CACHE/js/js.a91a1190a5da.js — 200 — 7.5 KiB — 23 ms — h3https://www-analytics.ripe.net/matomo.jswww-analytics.ripe.net/matomo.js https://www-analytics.ripe.net/matomo.js — 200 — 41.1 KiB — 995 ms — h2data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 22 22"><path d="M21.84…www.w3.org/2000/svg" viewBox="0 0 2... data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 22 22"><path d="M21.84… — 200 — 0 B — 0 ms — datadata:image/svg+xml;utf8,<svg viewBox="0 0 640 512" xmlns="http://www.w3.org/2000/svg"><path d="M304…www.w3.org/2000/svg"><path d="M304... data:image/svg+xml;utf8,<svg viewBox="0 0 640 512" xmlns="http://www.w3.org/2000/svg"><path d="M304… — 200 — 0 B — 0 ms — datadata:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 32 32"><path d="M11 9C…www.w3.org/2000/svg" viewBox="0 0 3... data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 32 32"><path d="M11 9C… — 200 — 0 B — 0 ms — datadata:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 24"><path d="M14.08…www.w3.org/2000/svg" viewBox="0 0 2... data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 24"><path d="M14.08… — 200 — 0 B — 0 ms — datahttps://www.ripe.net/static/images/ncc-background.svgwww.ripe.net/static/images/ncc-back... https://www.ripe.net/static/images/ncc-background.svg — 200 — 740 B — 25 ms — h3data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 12 10"><path fill-rule…www.w3.org/2000/svg" viewBox="0 0 1... data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 12 10"><path fill-rule… — 200 — 0 B — 0 ms — datadata:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 26 26"><path fill-rule…www.w3.org/2000/svg" viewBox="0 0 2... data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 26 26"><path fill-rule… — 200 — 0 B — 0 ms — datadata:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 20" ><path fill-rul…www.w3.org/2000/svg" viewBox="0 0 2... data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 20" ><path fill-rul… — 200 — 0 B — 0 ms — datadata:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 20" ><path fill-rul…www.w3.org/2000/svg" viewBox="0 0 2... data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 20" ><path fill-rul… — 200 — 0 B — 0 ms — datadata:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16"><path fill="inh…www.w3.org/2000/svg" viewBox="0 0 1... data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16"><path fill="inh… — 200 — 0 B — 0 ms — datadata:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M22.39…www.w3.org/2000/svg" viewBox="0 0 2... data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M22.39… — 200 — 0 B — 0 ms — datadata:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M16.49…www.w3.org/2000/svg" viewBox="0 0 2... data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M16.49… — 200 — 0 B — 0 ms — datadata:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 20"><path d="M11.82…www.w3.org/2000/svg" viewBox="0 0 2... data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 20"><path d="M11.82… — 200 — 0 B — 0 ms — datadata:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path fill-rule…www.w3.org/2000/svg" viewBox="0 0 2... data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path fill-rule… — 200 — 0 B — 0 ms — datadata:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path fill-rule…www.w3.org/2000/svg" viewBox="0 0 2... data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path fill-rule… — 200 — 0 B — 0 ms — datadata:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 25 24"><path fill-rule…www.w3.org/2000/svg" viewBox="0 0 2... data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 25 24"><path fill-rule… — 200 — 0 B — 0 ms — data
0 ms 1.0 s 2.0 s 3.0 s FCP 1.8 s LCP 1.8 shttps://ripe.net// https://ripe.net/ — 301 — 77 B — 757 ms — h2https://www.ripe.net/www.ripe.net/ https://www.ripe.net/ — 200 — 18.3 KiB — 745 ms — h2https://www.ripe.net/static/fonts/public-sans-latin-normal.woff2www.ripe.net/static/fonts/public-sa... https://www.ripe.net/static/fonts/public-sans-latin-normal.woff2 — 200 — 24.8 KiB — 30 ms — h2https://www.ripe.net/static/CACHE/css/style.fb5531065752.csswww.ripe.net/static/CACHE/css/style... https://www.ripe.net/static/CACHE/css/style.fb5531065752.css — 200 — 26.1 KiB — 26 ms — h2https://www-static.ripe.net/static/webcomponents/embed-consent-v1.1.6.min.jswww-static.ripe.net/static/webcompo... https://www-static.ripe.net/static/webcomponents/embed-consent-v1.1.6.min.js — 200 — 6.0 KiB — 878 ms — h2https://www.ripe.net/static/images/ripe-ncc-logo-2025.svgwww.ripe.net/static/images/ripe-ncc... https://www.ripe.net/static/images/ripe-ncc-logo-2025.svg — 200 — 1.6 KiB — 31 ms — h2https://www.ripe.net/static/images/rss.svgwww.ripe.net/static/images/rss.svg https://www.ripe.net/static/images/rss.svg — 200 — 783 B — 27 ms — h2https://www.ripe.net/media/images/RIPE-Community-.2e16d0ba.format-webp.fill-1024x576-c100.webpwww.ripe.net/media/images/RIPE-Comm... https://www.ripe.net/media/images/RIPE-Community-.2e16d0ba.format-webp.fill-1024x576-c100.webp — 200 — 36.6 KiB — 16 ms — h3https://www.ripe.net/media/images/WhatsApp_Image_20.2e16d0ba.fill-720x405-c25.format-webp.webpwww.ripe.net/media/images/WhatsApp_... https://www.ripe.net/media/images/WhatsApp_Image_20.2e16d0ba.fill-720x405-c25.format-webp.webp — 200 — 32.2 KiB — 222 ms — h3https://www.ripe.net/static/favicons/site.webmanifestwww.ripe.net/static/favicons/site.w... https://www.ripe.net/static/favicons/site.webmanifest — 200 — 227 B — 19 ms — h3https://www.ripe.net/media/images/RIPE_84_NCC_BER.2e16d0ba.format-webp.fill-1024x576-c100.webpwww.ripe.net/media/images/RIPE_84_N... https://www.ripe.net/media/images/RIPE_84_NCC_BER.2e16d0ba.format-webp.fill-1024x576-c100.webp — 200 — 102.4 KiB — 20 ms — h3https://www.ripe.net/static/images/ripe-community-logo.svgwww.ripe.net/static/images/ripe-com... https://www.ripe.net/static/images/ripe-community-logo.svg — 200 — 1.2 KiB — 19 ms — h3https://www.ripe.net/static/CACHE/js/js.a91a1190a5da.jswww.ripe.net/static/CACHE/js/js.a91... https://www.ripe.net/static/CACHE/js/js.a91a1190a5da.js — 200 — 7.5 KiB — 23 ms — h3https://www-analytics.ripe.net/matomo.jswww-analytics.ripe.net/matomo.js https://www-analytics.ripe.net/matomo.js — 200 — 41.1 KiB — 995 ms — h2data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 22 22"><path d="M21.84…www.w3.org/2000/svg" viewBox="0 0 2... data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 22 22"><path d="M21.84… — 200 — 0 B — 0 ms — datadata:image/svg+xml;utf8,<svg viewBox="0 0 640 512" xmlns="http://www.w3.org/2000/svg"><path d="M304…www.w3.org/2000/svg"><path d="M304... data:image/svg+xml;utf8,<svg viewBox="0 0 640 512" xmlns="http://www.w3.org/2000/svg"><path d="M304… — 200 — 0 B — 0 ms — datadata:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 32 32"><path d="M11 9C…www.w3.org/2000/svg" viewBox="0 0 3... data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 32 32"><path d="M11 9C… — 200 — 0 B — 0 ms — datadata:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 24"><path d="M14.08…www.w3.org/2000/svg" viewBox="0 0 2... data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 24"><path d="M14.08… — 200 — 0 B — 0 ms — datahttps://www.ripe.net/static/images/ncc-background.svgwww.ripe.net/static/images/ncc-back... https://www.ripe.net/static/images/ncc-background.svg — 200 — 740 B — 25 ms — h3data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 12 10"><path fill-rule…www.w3.org/2000/svg" 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HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
100% of JavaScript execution is third-party
First-party Third-party 536ms · 65KB · $7/mo
Unattributable
Other
Costly
Execution 249ms
Transfer 0 KB
Monthly Cost $3/mo
www.ripe.net
Other
Optional
Execution 129ms
Transfer 18 KB
Monthly Cost $2/mo
www-analytics.ripe.net
Other
Optional
Execution 104ms
Transfer 41 KB
Unused 52%
Monthly Cost $1/mo
www-static.ripe.net
Other
Optional
Execution 55ms
Transfer 6 KB
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • Unattributable adds 249ms and costs ~$3/month

100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

When third-party JS execution time exceeds your own, performance gains from frontend work are capped by code you don't own.

Learn more ▾

Every millisecond of third-party JS competes with your own for main-thread time. If their share is bigger than yours, optimization on your code base barely moves the needle. Audit, defer, or remove third-parties before further frontend optimization. Use Lighthouse's third-party audit to identify the worst offenders.

Source: web.dev

Unattributable takes 249ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

52% of www-analytics.ripe.net's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

How third-party costs are calculated

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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