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Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
76
GRADE
C
FIX
4
REVIEW
2
PASS
9
INFO
2

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

Mobile Desktop
67
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
71
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.
69
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.

3.07 s

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

6.17 s

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

242 ms

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

0.019

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

3.24 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.

9.05 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
17
9 PASS 2 REVIEW 4 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 (1.8 MiB of 1.8 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
JS Execution Cost
Action
2098ms total JS execution
FIX
2098ms total JS execution
Warning::
https://workspaceupdates.googleblog.com/2023/04/ne...: 1116ms CPU time
Warning::
Unattributable: 288ms CPU time
Warning::
https://translate.googleapis.com/_/translate_http/...: 271ms CPU time
Info::
https://www.googletagmanager.com/gtag/js?id=G-DY1T...: 183ms CPU time
Info::
https://www.googletagmanager.com/gtag/js?id=G-XXXX...: 174ms CPU time
Warning::
Third-party scripts: 2098ms (100% of total)

Main Thread Breakdown

Other 28% Style & Layout 28% Script Evaluation 25% Rendering 8% Script Parsing & Compilation 7% Parse HTML & CSS 3%
ScriptTotalScriptingParse/CompileParty
https://workspaceupdates.googleblog.com/2023/04/new-community-features-for-google-chat-and-an-update-currents%20.html?m=11116ms39ms19ms3rd
Unattributable288ms8ms0ms3rd
https://translate.googleapis.com/_/translate_http/_/js/k=translate_http.tr.es.tx2xLY0E1vs.O/am=AAAAAQ/d=1/exm=el_conf/ed=1/rs=AN8SPfqpxCvJC7xM-EE7YNgj9y6xTg0LGA/m=el_main271ms155ms30ms3rd
https://www.googletagmanager.com/gtag/js?id=G-DY1T9T89QG&cx=c&gtm=4e64h1183ms152ms30ms3rd
https://www.googletagmanager.com/gtag/js?id=G-XXXXXXXXXX174ms119ms36ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-T6RPFPRD67ms43ms23ms3rd
D
JS Bundles
Action
7 scripts, 310 KB unused
FIX
7 scripts, 310 KB unused
Warning::
https://translate.googleapis.com/_/translate_http/...: 92 KB unused (78%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-XXXX...: 82 KB unused (60%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-T6R...: 73 KB unused (65%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-DY1T...: 63 KB unused (43%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 310 KB
310 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://translate.googleapis.com/_/translate_http/_/js/k=translate_http.tr.es.tx2xLY0E1vs.O/am=AAAAAQ/d=1/exm=el_conf/ed=1/rs=AN8SPfqpxCvJC7xM-EE7YNgj9y6xTg0LGA/m=el_main118 KB92 KB (78%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-XXXXXXXXXX137 KB82 KB (60%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-T6RPFPRD111 KB73 KB (65%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-DY1T9T89QG&cx=c&gtm=4e64h1146 KB63 KB (43%)✓3rd
https://translate.google.com/translate_a/element.js?cb=googleTranslateElementInit28 KB—✓3rd
https://workspaceupdates.googleblog.com/js/cookienotice.js2 KB—✓3rd
https://translate-pa.googleapis.com/v1/supportedLanguages?client=te&display_language=es&key=AIzaSyBWDj0QJvVIx8XOhRegXX5_SrRWxhT5Hs4&callback=callback3 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

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

D
Page Weight Inventory
Action
40 resources · 1.8 MB · 310 KB savings available
FIX
40 resources · 1.8 MB · 310 KB savings available
Warning::
Page weight 809 KB over 1MB target
Got: 1.8 MB Expected: ≤ 1 MB
Info::
~310 KB of savings available
Warning::
39 third-party resources (100% of weight)
Info::
2 resources over 200KB
40 resources · 1.8 MiB · 39 third-party 808.5 KiB over 1MB target
Image 56% · 1.0 MiB
JavaScript 30% · 546.5 KiB
Font 11% · 200.8 KiB
Document 2% · 41.8 KiB
CSS 1% · 16.9 KiB
Other 0% · 560 B

~309.9 KiB of savings available

Remove unused JavaScript: 309.9 KiB
C
Page Weight Budget
Action
1.8 MB transferred, 40 requests
REVIEW
1.8 MB transferred, 40 requests
Info::
Page weighs 3.2 MB (1.8 MB transferred)
Warning::
Images are 1.0 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 1.0 MB
Warning::
JavaScript is 547 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 547 KB
Info::
Fonts are 201 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 201 KB
Info::
40 HTTP requests
Info::
Estimated 0.38 g CO2 per page load
1.8 MB / 2.4 MB budget
1.8 MB transferred
40 requests
0.38 g CO2 per page load
Images 1.0 MiB 56%
JavaScript 546.5 KiB 30%
Fonts 200.8 KiB 11%
HTML 41.1 KiB 2%
CSS 16.9 KiB 1%
Other 2.4 KiB 0%
Other 560 B 0%
0 2.4 MB 4.9 MB
Approaching limit

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.

Source: web.dev

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Why this matters

JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.

Source: web.dev

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

C
Image Optimization
Action
18 images, 0 KB saveable
REVIEW
18 images, 0 KB saveable
Warning::
https://blogger.googleusercontent.com/img/b/R29vZ2... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://blogger.googleusercontent.com/img/b/R29vZ2... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.gstatic.com/images/branding/productlog... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://blogger.googleusercontent.com/img/b/R29vZ2... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://services.google.com/fh/files/misc/banner_u... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
18 images 1.0 MB
0 oversized -0 KB
18 legacy format
5 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

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

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
4 fonts (201 KB)
PASS
4 fonts (201 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

201 KB total

Render-blocking

0

of 4

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s FCP 3.1 s LCP 6.2 shttps://fonts.gstatic.com/s/googlesans/v60/4UasrENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iqcsih3SAyH6cAwhX9RPjIUvbQoi-E.woff24UasrENHsxJlGDuGo1OIlJf... https://fonts.gstatic.com/s/googlesans/v60/4UasrENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iqcsih3SAyH6cAwhX9RPjIUvbQoi-E.woff2 — 33.4 KiB — 52 ms — font-display: swaphttps://fonts.gstatic.com/s/materialicons/v145/flUhRq6tzZclQEJ-Vdg-IuiaDsNcIhQ8tQ.woff2flUhRq6tzZclQEJ-Vdg-Iui... https://fonts.gstatic.com/s/materialicons/v145/flUhRq6tzZclQEJ-Vdg-IuiaDsNcIhQ8tQ.woff2 — 125.6 KiB — 85 ms — font-display: swaphttps://fonts.gstatic.com/s/googlesanstext/v25/5aUp9-KzpRiLCAt4Unrc-xIKmCU5oLlVnmhjtjm4DZw.woff25aUp9-KzpRiLCAt4Unrc-xI... https://fonts.gstatic.com/s/googlesanstext/v25/5aUp9-KzpRiLCAt4Unrc-xIKmCU5oLlVnmhjtjm4DZw.woff2 — 22.8 KiB — 66 ms — font-display: swaphttps://fonts.gstatic.com/s/googlesans/v60/4UasrENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iqcsih3SAyH6cAwhX9RPlwUvbQoi-Entw.woff24UasrENHsxJlGDuGo1OIlJf... https://fonts.gstatic.com/s/googlesans/v60/4UasrENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iqcsih3SAyH6cAwhX9RPlwUvbQoi-Entw.woff2 — 19.0 KiB — 58 ms — font-display: swap
4UasrENHsxJlGDuGo1OIlJf... woff2 swap
Size 33 KB
Load time 52 ms
Start 1.1 s
Risk FOUT — text flashes from fallback to web font
flUhRq6tzZclQEJ-Vdg-Iui... woff2 swap
Size 126 KB
Load time 85 ms
Start 1.1 s
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
5aUp9-KzpRiLCAt4Unrc-xI... woff2 swap
Size 23 KB
Load time 66 ms
Start 1.1 s
Risk FOUT — text flashes from fallback to web font
4UasrENHsxJlGDuGo1OIlJf... woff2 swap
Size 19 KB
Load time 58 ms
Start 1.1 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)

Fixing the unchecked items could save ~63 KB and ~126 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+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Google Cloud

A
HTTP Caching
max-age=1800 (30 minutes)
PASS
max-age=1800 (30 minutes)
Info::
Cache-Control header is set
Got: public, max-age=1800
Info::
Effective TTL: 30 minutes (max-age=1800)
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

public, max-age=1800

DirectiveValueMeaning
public—Any cache may store this response
max-age1800Cache for 30 minutes
Effective TTL: 1800 seconds
Network Waterfall
40 requests over 1701ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s FCP 3.1 s LCP 6.2 shttps://plus.google.com// https://plus.google.com/ — 301 — 315 B — 24 ms — h2https://workspaceupdates.googleblog.com/2023/04/new-community-features-for-google-chat-and-an-update-currents%20.htmlworkspaceupdates.googleblog.com/202... https://workspaceupdates.googleblog.com/2023/04/new-community-features-for-google-chat-and-an-update-currents%20.html — 302 — 354 B — 617 ms — h2https://workspaceupdates.googleblog.com/2023/04/new-community-features-for-google-chat-and-an-update-currents%20.html?m=1workspaceupdates.googleblog.com/202... https://workspaceupdates.googleblog.com/2023/04/new-community-features-for-google-chat-and-an-update-currents%20.html?m=1 — 200 — 41.1 KiB — 179 ms — h2https://www.blogger.com/static/v1/widgets/2944754296-widget_css_bundle.csswww.blogger.com/static/v1/widgets/2... https://www.blogger.com/static/v1/widgets/2944754296-widget_css_bundle.css — 200 — 6.9 KiB — 99 ms — h2https://www.googletagmanager.com/gtag/js?id=G-XXXXXXXXXXwww.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-XXXXXXXXXX — 200 — 137.1 KiB — 154 ms — h2https://fonts.googleapis.com/css?family=Google+Sans+Text:400,500,700,400i,500i,700i|Google+Sans_old:400,500,700|Google+Sans+Display:400,500,700|Product+Sans:400fonts.googleapis.com/css?family=Goo... https://fonts.googleapis.com/css?family=Google+Sans+Text:400,500,700,400i,500i,700i|Google+Sans_old:400,500,700|Google+Sans+Display:400,500,700|Product+Sans:400 — 200 — 4.1 KiB — 125 ms — h2https://fonts.googleapis.com/icon?family=Material+Iconsfonts.googleapis.com/icon?family=Ma... https://fonts.googleapis.com/icon?family=Material+Icons — 200 — 817 B — 97 ms — h2https://storage.googleapis.com/prod-fiber/blog/icon-hamburger.svgstorage.googleapis.com/prod-fiber/b... https://storage.googleapis.com/prod-fiber/blog/icon-hamburger.svg — 200 — 650 B — 93 ms — h2https://www.gstatic.com/images/branding/productlogos/googleg/v6/36px.svgwww.gstatic.com/images/branding/pro... https://www.gstatic.com/images/branding/productlogos/googleg/v6/36px.svg — 200 — 870 B — 71 ms — h2https://services.google.com/fh/files/misc/banner_updated_gwsu.pngservices.google.com/fh/files/misc/b... https://services.google.com/fh/files/misc/banner_updated_gwsu.png — 200 — 20.7 KiB — 118 ms — h2https://storage.googleapis.com/prod-fiber/blog/icon-email.svgstorage.googleapis.com/prod-fiber/b... https://storage.googleapis.com/prod-fiber/blog/icon-email.svg — 200 — 527 B — 24 ms — h2https://storage.googleapis.com/prod-fiber/blog/icon-linkedin.svgstorage.googleapis.com/prod-fiber/b... https://storage.googleapis.com/prod-fiber/blog/icon-linkedin.svg — 200 — 658 B — 29 ms — h2https://translate.google.com/translate_a/element.js?cb=googleTranslateElementInittranslate.google.com/translate_a/el... https://translate.google.com/translate_a/element.js?cb=googleTranslateElementInit — 200 — 28.3 KiB — 130 ms — h2https://storage.googleapis.com/prod-fiber/blog/icon-facebook.svgstorage.googleapis.com/prod-fiber/b... https://storage.googleapis.com/prod-fiber/blog/icon-facebook.svg — 200 — 541 B — 30 ms — h2https://workspace.google.com/lp/static/images/social-x.svg?fingerprint=33322732705ac1c58354be11deb19821workspace.google.com/lp/static/imag... https://workspace.google.com/lp/static/images/social-x.svg?fingerprint=33322732705ac1c58354be11deb19821 — 200 — 4.2 KiB — 111 ms — h2https://storage.googleapis.com/prod-fiber/blog/default_blue.svgstorage.googleapis.com/prod-fiber/b... https://storage.googleapis.com/prod-fiber/blog/default_blue.svg — 200 — 1.2 KiB — 31 ms — h2https://storage.googleapis.com/prod-fiber/blog/icon-youtube.svgstorage.googleapis.com/prod-fiber/b... https://storage.googleapis.com/prod-fiber/blog/icon-youtube.svg — 200 — 764 B — 31 ms — h2https://storage.googleapis.com/prod-fiber/blog/icon-expand-more.svgstorage.googleapis.com/prod-fiber/b... https://storage.googleapis.com/prod-fiber/blog/icon-expand-more.svg — 200 — 413 B — 32 ms — h2https://workspaceupdates.googleblog.com/js/cookienotice.jsworkspaceupdates.googleblog.com/js/... https://workspaceupdates.googleblog.com/js/cookienotice.js — 200 — 2.0 KiB — 35 ms — h3https://www.googletagmanager.com/gtm.js?id=GTM-T6RPFPRDwww.googletagmanager.com/gtm.js?id=... https://www.googletagmanager.com/gtm.js?id=GTM-T6RPFPRD — 200 — 111.5 KiB — 42 ms — h2https://www.blogger.com/dyn-css/authorization.css?targetBlogID=5245696872621940063&zx=63c77802-5916-461a-a0bd-31343df31116www.blogger.com/dyn-css/authorizati... https://www.blogger.com/dyn-css/authorization.css?targetBlogID=5245696872621940063&zx=63c77802-5916-461a-a0bd-31343df31116 — 200 — 684 B — 615 ms — h2https://storage.googleapis.com/prod-fiber/blog/icon-search.svgstorage.googleapis.com/prod-fiber/b... https://storage.googleapis.com/prod-fiber/blog/icon-search.svg — 200 — 347 B — 25 ms — 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workspaceupdates.googleblog.com
Other
Costly
Execution 1116ms
Transfer 41 KB
Monthly Cost €12/mo
Unattributable
Other
Costly
Execution 288ms
Transfer 0 KB
Monthly Cost €3/mo
translate.googleapis.com
Other
Costly
Execution 271ms
Transfer 118 KB
Unused 78%
Monthly Cost €3/mo
Google Tag Manager
Tag Manager
Optional
Execution 183ms
Transfer 146 KB
Unused 43%
Monthly Cost €2/mo
Google Tag Manager
Tag Manager
Optional
Execution 174ms
Transfer 137 KB
Unused 60%
Monthly Cost €2/mo
Google Tag Manager
Tag Manager
Optional
Execution 67ms
Transfer 111 KB
Unused 65%
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • workspaceupdates.googleblog.com adds 1116ms and costs ~€12/month
  • Unattributable adds 288ms and costs ~€3/month
  • translate.googleapis.com adds 271ms 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

workspaceupdates.googleblog.com takes 1116ms 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

Unattributable takes 288ms 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

translate.googleapis.com takes 271ms 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

78% of translate.googleapis.com'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

60% of Google Tag Manager'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

65% of Google Tag Manager'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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