Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.

SCORE

GRADE

FIX

REVIEW

PASS

INFO

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

Mobile Desktop

Performance

Accessibility

100

Best Practices

SEO

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

729 ms

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

870 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.

0.009

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

966 ms

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

880 ms

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

10 PASS 1 REVIEW 2 FIX

Third-Party Impact

Action

100% third-party, 0 ms blocking

FIX

100% third-party, 0 ms blocking

Third-party code accounts for 100% of page weight (439.4 KiB of 439.6 KiB)

Third-party blocking time is low (0 ms)

100%

First-party Third-party

HTTP Caching

Action

No cache headers

FIX

No cache headers

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.

Image Optimization

64 images, 0 KB saveable

REVIEW

64 images, 0 KB saveable

All images are well-optimized

64 images 51 KB

0 oversized -0 KB

10 legacy format

0 missing dimensions CLS risk

A+

Page Weight Budget

440 KB transferred, 87 requests

PASS

440 KB transferred, 87 requests

Page weighs 1018 KB (440 KB transferred)

Fonts are 252 KB — consider subsetting or using system fonts

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

Got: 252 KB

87 HTTP requests

Estimated 0.09 g CO2 per page load

440 KB transferred

87 requests

0.09 g CO2 per page load

Fonts 252.0 KiB 57%

HTML 60.5 KiB 14%

Images 50.6 KiB 12%

CSS 35.9 KiB 8%

JavaScript 29.7 KiB 7%

Other 11.0 KiB 2%

0 2.4 MB 4.9 MB

Under budget

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

A+

Text Compression

All text resources are compressed

PASS

All text resources are compressed

All text resources are properly compressed.

A+

JS Execution Cost

448ms total JS execution

PASS

448ms total JS execution

https://www.iubenda.com/en/: 299ms CPU time

Unattributable: 150ms CPU time

Third-party scripts: 448ms (100% of total)

Main Thread Breakdown

Other 36% Style & Layout 30% Script Evaluation 22% Parse HTML & CSS 6% Rendering 5%

Script	Total	Scripting	Parse/Compile	Party
https://www.iubenda.com/en/	299ms	91ms	2ms	3rd
Unattributable	150ms	2ms	0ms	3rd

A+

Font Loading

6 fonts (252 KB)

PASS

6 fonts (252 KB)

6 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

252 KB total

Render-blocking

of 6

Dominant font-display

swap

Most common across fonts

Font loading timeline

Transfer FOIT (block) FOUT (swap)

Poppins-Bold.woff2 woff2 swap

Size 50 KB

Load time 8 ms

Start 965 ms