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https://share.google

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
94
GRADE
A
FIX
1
REVIEW
1
PASS
13
INFO
2

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

Mobile Desktop
99
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.
83
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.

1.67 s

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

1.85 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.

0.000

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

1.67 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.

1.85 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
13 PASS 1 REVIEW 1 FIX
D
Third-Party Impact
Action
93% third-party, 0 ms blocking
FIX
93% third-party, 0 ms blocking
Warning::
Third-party code accounts for 93% of page weight (75.4 KiB of 81.3 KiB)
Info::
Third-party blocking time is low (0 ms)
93%
First-party Third-party
B
HTTP Caching
no-cache, must-revalidate
REVIEW
no-cache, must-revalidate
Info::
Cache-Control header is set
Got: no-cache, must-revalidate
Info::
Last-Modified header present
Cache-Control

no-cache, must-revalidate

DirectiveValueMeaning
no-cache—Cache but always revalidate first
must-revalidate—Must recheck with server after expiry
A+
Page Weight Budget
81 KB transferred, 7 requests
PASS
81 KB transferred, 7 requests
Info::
Page weighs 161 KB (81 KB transferred)
Info::
7 HTTP requests
Info::
Estimated 0.02 g CO2 per page load
81 KB / 2.4 MB budget
81 KB transferred
7 requests
0.02 g CO2 per page load
Fonts 56.6 KiB 70%
CSS 14.3 KiB 18%
Images 4.5 KiB 6%
Other 4.4 KiB 5%
HTML 1.5 KiB 2%
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
Warning::
https://www.google.com/images/branding/googlelogo/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
1 images 4 KB
0 oversized -0 KB
1 legacy format
1 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

A+
JS Execution Cost
251ms total JS execution
PASS
251ms total JS execution
Info::
https://share.google/: 138ms CPU time
Info::
Unattributable: 113ms CPU time
Info::
Third-party scripts: 113ms (45% of total)

Main Thread Breakdown

Other 52% Style & Layout 38% Script Evaluation 5%
ScriptTotalScriptingParse/CompileParty
https://share.google/138ms5ms1ms1st
Unattributable113ms5ms0ms3rd
A+
Font Loading
2 fonts (57 KB)
PASS
2 fonts (57 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

2

57 KB total

Render-blocking

0

of 2

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 1.7 s LCP 1.9 shttps://fonts.gstatic.com/s/productsans/v20/pxiDypQkot1TnFhsFMOfGShVF9eOYktMqg.woff2pxiDypQkot1TnFhsFMOfGSh... https://fonts.gstatic.com/s/productsans/v20/pxiDypQkot1TnFhsFMOfGShVF9eOYktMqg.woff2 — 14.6 KiB — 77 ms — font-display: swaphttps://fonts.gstatic.com/s/opensans/v44/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu0SC55I.woff2memvYaGs126MiZpBA-UvWbX... https://fonts.gstatic.com/s/opensans/v44/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu0SC55I.woff2 — 42.0 KiB — 85 ms — font-display: swap
pxiDypQkot1TnFhsFMOfGSh... woff2 swap
Size 15 KB
Load time 77 ms
Start 243 ms
Risk FOUT — text flashes from fallback to web font
memvYaGs126MiZpBA-UvWbX... woff2 swap
Size 42 KB
Load time 85 ms
Start 243 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
No JavaScript
PASS
No JavaScript
Info::
No JavaScript bundles
No JavaScript files loaded.
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
7 resources · 81 KB · 0 KB savings available
PASS
7 resources · 81 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 81 KB
Warning::
5 third-party resources (93% of weight)
7 resources · 81.3 KiB · 5 third-party Within 1MB page-weight target
Font 70% · 56.6 KiB
CSS 18% · 14.3 KiB
Image 11% · 8.9 KiB
Document 2% · 1.5 KiB
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

Network Waterfall
7 requests over 328ms
INFO
0 ms 500 ms 1.0 s 1.5 s FCP 1.7 s LCP 1.9 shttps://share.google// https://share.google/ — 200 — 1.5 KiB — 27 ms — h2https://fonts.googleapis.com/css?family=Open+Sans:300,400,600,700|Product+Sans:400&subset=latinfonts.googleapis.com/css?family=Ope... https://fonts.googleapis.com/css?family=Open+Sans:300,400,600,700|Product+Sans:400&subset=latin — 200 — 2.4 KiB — 105 ms — h2https://www.google.com/css/maia.csswww.google.com/css/maia.css https://www.google.com/css/maia.css — 200 — 11.9 KiB — 70 ms — h3https://www.google.com/images/branding/googlelogo/2x/googlelogo_color_116x41dp.pngwww.google.com/images/branding/goog... https://www.google.com/images/branding/googlelogo/2x/googlelogo_color_116x41dp.png — 200 — 4.5 KiB — 70 ms — h3https://fonts.gstatic.com/s/productsans/v20/pxiDypQkot1TnFhsFMOfGShVF9eOYktMqg.woff2fonts.gstatic.com/s/productsans/v20... https://fonts.gstatic.com/s/productsans/v20/pxiDypQkot1TnFhsFMOfGShVF9eOYktMqg.woff2 — 200 — 14.6 KiB — 77 ms — h3https://fonts.gstatic.com/s/opensans/v44/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu0SC55I.woff2fonts.gstatic.com/s/opensans/v44/me... https://fonts.gstatic.com/s/opensans/v44/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu0SC55I.woff2 — 200 — 42.0 KiB — 85 ms — h3https://share.google/favicon.ico/favicon.ico https://share.google/favicon.ico — 200 — 4.4 KiB — 27 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
45% of JavaScript execution is third-party
First-party Third-party 113ms · 0KB · $2/mo
Unattributable
Other
Optional
Execution 113ms
Transfer 0 KB
Monthly Cost $2/mo

45% of JavaScript execution time comes from third-party scripts.

Why this matters

Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.

Learn more ▾

Each third-party script is a black box: you don't control when it loads, what it executes, or how much it grows. They often account for a major share of total blocking time on average sites (HTTP Archive's Web Almanac documents the trend). Audit which ones you actually need, defer the rest, and use facade patterns (lite-youtube, lite-vimeo) for embedded media.

Source: web.dev / HTTP Archive Web Almanac

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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