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

100

SEO

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

289 ms

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

679 ms

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

56 ms

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

0.127

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

767 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.

1.12 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

8 PASS 4 REVIEW 1 FIX

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-store, no-cache, must-revalidate

No ETag or Last-Modified header

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

Cache-Control

no-store, no-cache, must-revalidate

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

Third-Party Impact

45% third-party, 0 ms blocking

REVIEW

45% third-party, 0 ms blocking

Third-party code accounts for 45% of page weight (173.6 KiB of 386.0 KiB)

Third-party blocking time is low (0 ms)

55%

45%

First-party Third-party

Image Optimization

30 images, 0 KB saveable

REVIEW

30 images, 0 KB saveable

All images are well-optimized

30 images 134 KB

0 oversized -0 KB

30 legacy format

0 missing dimensions CLS risk

JS Execution Cost

665ms total JS execution

REVIEW

665ms total JS execution

Unattributable: 195ms CPU time

https://notes.io/cdn-cgi/challenge-platform/script...: 183ms CPU time

https://www.googletagmanager.com/gtag/js?id=G-H0XV...: 105ms CPU time

https://notes.io/cdn-cgi/scripts/7d0fa10a/cloudfla...: 94ms CPU time

https://notes.io/: 88ms CPU time

Third-party scripts: 300ms (45% of total)

Main Thread Breakdown

Script Evaluation 50% Other 31% Style & Layout 12% Script Parsing & Compilation 5%

Script	Total	Scripting	Parse/Compile	Party
Unattributable	195ms	2ms	0ms	3rd
https://notes.io/cdn-cgi/challenge-platform/scripts/jsd/main.js	183ms	174ms	4ms	1st
https://www.googletagmanager.com/gtag/js?id=G-H0XVNMGVTV	105ms	84ms	20ms	3rd
https://notes.io/cdn-cgi/scripts/7d0fa10a/cloudflare-static/rocket-loader.min.js	94ms	47ms	1ms	1st
https://notes.io/	88ms	20ms	1ms	1st

JS Bundles

7 scripts, 68 KB unused

REVIEW

7 scripts, 68 KB unused

https://www.googletagmanager.com/gtag/js?id=G-H0XV...: 68 KB unused (42%)

Consider code splitting or tree shaking to reduce unused code.

Total unused JavaScript: 68 KB

68 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://www.googletagmanager.com/gtag/js?id=G-H0XVNMGVTV	161 KB	68 KB (42%)	✓	3rd
https://notes.io/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.js	1 KB	—	✓	1st
https://notes.io/cdn-cgi/scripts/7d0fa10a/cloudflare-static/rocket-loader.min.js	4 KB	—	✓	1st
https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da1771523124516	11 KB	—	✓	3rd
https://notes.io/theme/scripts/notes.min.js	3 KB	—	✓	1st
https://notes.io/theme/scripts/jquery.min.js	34 KB	—	✓	1st
https://notes.io/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/main.js?	14 KB	—	✓	1st

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

A+

Page Weight Budget

386 KB transferred, 47 requests

PASS

386 KB transferred, 47 requests

Page weighs 797 KB (386 KB transferred)

47 HTTP requests

Estimated 0.08 g CO2 per page load

386 KB transferred

47 requests

0.08 g CO2 per page load

JavaScript 227.8 KiB 59%

Images 134.3 KiB 35%

CSS 13.9 KiB 4%

HTML 5.1 KiB 1%

Other 2.1 KiB 1%

Other 1.8 KiB 0%

Other 552 B 0%

Other 543 B 0%

0 2.4 MB 4.9 MB

Under budget

A+

Text Compression

All text resources are compressed

PASS

All text resources are compressed

All text resources are properly compressed.

A+

Font Loading

No web fonts (system fonts)

PASS

No web fonts (system fonts)

No web fonts loaded — system fonts are fastest

No web fonts loaded — system fonts are optimal.

A+

Resource Caching

All resources properly cached

PASS

All resources properly cached

No caching issues found

All static resources have appropriate caching headers.

A+

Critical Rendering Path

No render-blocking resources

PASS

No render-blocking resources

No render-blocking resources detected

A+

Resource Hints

No optimization needed

PASS

No optimization needed

No resource hint issues

Page Weight Inventory

47 resources · 386 KB · 68 KB savings available

PASS

47 resources · 386 KB · 68 KB savings available

Within 1MB page-weight target

Got: 386 KB

~68 KB of savings available

5 third-party resources (45% of weight)

47 resources · 386.0 KiB · 5 third-party Within 1MB page-weight target

JavaScript 59% · 227.8 KiB

Image 35% · 135.3 KiB

CSS 4% · 13.9 KiB

Document 1% · 5.1 KiB

Other 1% · 3.9 KiB

~67.9 KiB of savings available

Remove unused JavaScript: 67.9 KiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

47 resources			386.0 KiB

A+

Green Hosting

Whether the site is served from green-energy infrastructure

PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Cloudflare

Network Waterfall

47 requests over 974ms

INFO

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 300ms · 161KB · ₺12/mo

Script	Category	Execution	Transfer	Unused	Monthly Cost	Verdict
Unattributable Unattributable	Other	195ms	0 KB	—	₺8/mo	Optional
Google Tag Manager www.googletagmanager.com	Tag Manager	105ms	161 KB	42%	₺4/mo	Optional

Unattributable

Other

Optional

Execution 195ms

Transfer 0 KB

Monthly Cost ₺8/mo

Google Tag Manager

Tag Manager

Optional

Execution 105ms

Transfer 161 KB

Unused 42%

Monthly Cost ₺4/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.