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

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.

782 ms

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

3.10 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.

0.004

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

2.32 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.

3.10 s

Page Load Progression

957 ms

1.9 s

2.9 s

3.8 s

4.8 s

5.7 s

6.7 s

7.7 s

Checks

7 PASS 4 REVIEW 2 FIX

Page Weight Budget

Action

8.0 MB transferred, 52 requests

FIX

8.0 MB transferred, 52 requests

Page weighs 8.9 MB (8.0 MB transferred)

Images are 7.8 MB — compress or use modern formats

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

Got: 7.8 MB

52 HTTP requests

Estimated 1.7 g CO2 per page load

8.0 MB transferred

52 requests

1.7 g CO2 per page load

Images 7.8 MiB 97%

JavaScript 98.2 KiB 1%

Fonts 58.4 KiB 1%

CSS 34.6 KiB 0%

HTML 19.0 KiB 0%

Other 5.2 KiB 0%

Other 258 B 0%

Other 76 B 0%

0 2.4 MB 4.9 MB

Over budget

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

HTTP Caching

Action

no-store (uncacheable)

FIX

no-store (uncacheable)

Cache-Control: no-store prevents all caching

Intentional for dynamic content, but increases server load for every page view.

Got: no-cache, no-store, must-revalidate, max-age=0

No ETag or Last-Modified header

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

Cache-Control

no-cache, no-store, must-revalidate, max-age=0

Directive	Value	Meaning
no-cache	—	Cache but always revalidate first
no-store	—	Never cache this response
must-revalidate	—	Must recheck with server after expiry
max-age	0	Cache for 0 seconds

Image Optimization

Action

30 images, 0 KB saveable

REVIEW

30 images, 0 KB saveable

https://react-circle-flags.pages.dev/id.svg is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

https://saldoxpres.com/public/img/banner/file_0000... is missing width/height — may cause layout shift

Set explicit width and height to prevent CLS.

30 images 7.8 MB

0 oversized -0 KB

14 legacy format

2 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

JS Execution Cost

921ms total JS execution

REVIEW

921ms total JS execution

https://saldoxpres.com/public/js/swiper.js: 373ms CPU time

https://saldoxpres.com/id-id: 312ms CPU time

Unattributable: 236ms CPU time

Third-party scripts: 236ms (26% of total)

Main Thread Breakdown

Other 50% Style & Layout 30% Script Evaluation 9% Rendering 7%

Script	Total	Scripting	Parse/Compile	Party
https://saldoxpres.com/public/js/swiper.js	373ms	35ms	5ms	1st
https://saldoxpres.com/id-id	312ms	23ms	2ms	1st
Unattributable	236ms	2ms	0ms	3rd

Page Weight Inventory

Action

52 resources · 8.0 MB · 23 KB savings available

REVIEW

52 resources · 8.0 MB · 23 KB savings available

Page weight 7.0 MB over 1MB target

Got: 8.0 MB Expected: ≤ 1 MB

7 third-party resources (4% of weight)

7 resources over 200KB

52 resources · 8.0 MiB · 7 third-party 7.0 MiB over 1MB target

Image 97% · 7.8 MiB

JavaScript 1% · 98.2 KiB

Font 1% · 58.4 KiB

CSS 0% · 34.6 KiB

Document 0% · 19.3 KiB

Other 0% · 5.3 KiB

~23.4 KiB of savings available

Remove unused JavaScript: 23.4 KiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

52 resources			8.0 MiB

Green Hosting

Action

Whether the site is served from green-energy infrastructure

REVIEW

Green Hosting

No green hosting detected

A+

Third-Party Impact

4% third-party, 0 ms blocking

PASS

4% third-party, 0 ms blocking

Third-party code accounts for 4% of page weight (348.4 KiB of 8.0 MiB)

Third-party blocking time is low (0 ms)

96%

First-party Third-party

A+

Text Compression

All text resources are compressed

PASS

All text resources are compressed

All text resources are properly compressed.

A+

Font Loading

5 fonts (58 KB)

PASS

5 fonts (58 KB)

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

Web fonts

58 KB total

Render-blocking

of 5

Dominant font-display

swap

Most common across fonts

Font loading timeline

Transfer FOIT (block) FOUT (swap)

font-woff;charset=utf-8... woff swap

Size 2 KB

Load time 35 ms

Start 2.2 s