Performance

· 16 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

Performance

Accessibility

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.

6.19 s

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

7.47 s

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

8 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.

6.19 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.

7.47 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

9 PASS 5 REVIEW 1 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 (1.2 MiB of 1.2 MiB)

Third-party blocking time is low (0 ms)

100%

First-party Third-party

Page Weight Budget

1.2 MB transferred, 162 requests

REVIEW

1.2 MB transferred, 162 requests

Page weighs 3.3 MB (1.2 MB transferred)

JavaScript is 536 KB — consider code splitting or lazy loading

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

Got: 536 KB

162 HTTP requests — consider bundling or reducing

Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.

Estimated 0.26 g CO2 per page load

1.2 MB transferred

162 requests

0.26 g CO2 per page load

JavaScript 536.5 KiB 43%

Images 351.9 KiB 28%

CSS 156.8 KiB 12%

Fonts 112.7 KiB 9%

HTML 85.3 KiB 7%

Other 17.3 KiB 1%

Other 584 B 0%

Other 87 B 0%

0 2.4 MB 4.9 MB

Under budget

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

Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.

Why this matters

High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.

Source: web.dev

Image Optimization

12 images, 0 KB saveable

REVIEW

12 images, 0 KB saveable

is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

https://uhf.microsoft.com/images/microsoft/RE1Mu3b... is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

12 images 352 KB

0 oversized -0 KB

4 legacy format

2 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Page Weight Inventory

Action

162 resources · 1.2 MB · 33 KB savings available

REVIEW

162 resources · 1.2 MB · 33 KB savings available

Page weight 237 KB over 1MB target

Got: 1.2 MB Expected: ≤ 1 MB

160 third-party resources (100% of weight)

2 resources over 200KB

162 resources · 1.2 MiB · 160 third-party 237.1 KiB over 1MB target

JavaScript 43% · 536.6 KiB

Image 29% · 361.6 KiB

CSS 12% · 156.8 KiB

Font 9% · 112.7 KiB

Document 7% · 91.9 KiB

Other 0% · 1.6 KiB

~33.5 KiB of savings available

Remove unused JavaScript: 33.5 KiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

162 resources			1.2 MiB

Green Hosting

Action

Whether the site is served from green-energy infrastructure

REVIEW

Green Hosting

No green hosting detected

HTTP Caching

no-cache

REVIEW

no-cache

Cache-Control header is set

Got: no-cache

No ETag or Last-Modified header

Conditional requests (304 Not Modified) are not possible without validators.

Cache-Control

no-cache

Directive	Value	Meaning
no-cache	—	Cache but always revalidate first

A+

Text Compression

All text resources are compressed

PASS

All text resources are compressed

All text resources are properly compressed.

A+

JS Execution Cost

No JS execution data

PASS

No JS execution data

No significant JS execution detected

A+

Font Loading

15 fonts (113 KB)

PASS

15 fonts (113 KB)

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

Web fonts

113 KB total

Render-blocking

of 15

Dominant font-display

swap

Most common across fonts

Font loading timeline

Transfer FOIT (block) FOUT (swap)

roboto-400.woff2 woff2 swap

Size 16 KB

Load time 15 ms

Start 800 ms