Performance

· 26 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.

4.11 s

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

6.33 s

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

88 ms

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

0.206

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

5.39 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.

6.96 s

Page Load Progression

487 ms

974 ms

1.5 s

1.9 s

2.4 s

2.9 s

3.4 s

3.9 s

Checks

17 PASS 6 REVIEW

Third-Party Impact

59% third-party, 0 ms blocking

REVIEW

59% third-party, 0 ms blocking

Third-party code accounts for 59% of page weight (593.2 KiB of 1001.2 KiB)

Third-party blocking time is low (0 ms)

41%

59%

First-party Third-party

JS Execution Cost

Action

1633ms total JS execution

REVIEW

1633ms total JS execution

https://pullitpacks.com/: 521ms CPU time

Unattributable: 444ms CPU time

https://pullitpacks.com/assets/aws-DSCIpVe1.js: 434ms CPU time

https://www.redditstatic.com/ads/pixel.js: 234ms CPU time

Third-party scripts: 677ms (41% of total)

Main Thread Breakdown

Script Evaluation 52% Other 31% Style & Layout 13%

Script	Total	Scripting	Parse/Compile	Party
https://pullitpacks.com/	521ms	211ms	3ms	1st
Unattributable	444ms	40ms	0ms	3rd
https://pullitpacks.com/assets/aws-DSCIpVe1.js	434ms	387ms	4ms	1st
https://www.redditstatic.com/ads/pixel.js	234ms	205ms	10ms	3rd

JS Bundles

11 scripts, 125 KB unused

REVIEW

11 scripts, 125 KB unused

https://pullitpacks.com/assets/aws-DSCIpVe1.js: 98 KB unused (51%)

Consider code splitting or tree shaking to reduce unused code.

https://pullitpacks.com/assets/index-Cb44Q5Rp.js: 26 KB unused (42%)

Consider code splitting or tree shaking to reduce unused code.

Total unused JavaScript: 125 KB

125 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://pullitpacks.com/assets/aws-DSCIpVe1.js	193 KB	98 KB (51%)	✓	1st
https://pullitpacks.com/assets/index-Cb44Q5Rp.js	64 KB	26 KB (42%)	✓	1st
https://pullitpacks.com/assets/query-xgxtOe41.js	15 KB	—	✓	1st
https://pullitpacks.com/assets/react-D1eGN7U_.js	22 KB	—	✓	1st
https://www.redditstatic.com/ads/pixel.js	19 KB	—	✓	3rd
https://pullitpacks.com/assets/BrowsePage-BJo63B2M.js	3 KB	—	✓	1st
https://pullitpacks.com/assets/queries-BQnAo6ek.js	1 KB	—	✓	1st
https://pullitpacks.com/assets/bulbapedia-dADAZNiR.js	1 KB	—	✓	1st
https://pullitpacks.com/assets/ResponsiveImage-CmeuCn3w.js	1 KB	—	✓	1st
https://pullitpacks.com/assets/cdn-I21UqnB0.js	1 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

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

Compression Algorithm

Action

Main response served uncompressed

REVIEW

Main response served uncompressed

Main HTML response has no Content-Encoding (uncompressed)

The main HTML document is served without compression. The Text Compression section above lists the broader picture; for the main response specifically, even gzip would shave ~70-80% off most text payloads.

Server-Timing Observability

No Server-Timing header found

REVIEW

No Server-Timing header found

Server-Timing exposes backend timing breakdowns to browser DevTools (e.g., `db: 45ms; render: 120ms; cache: 2ms`). Useful for diagnosing slow pages without backend log access. Most modern frameworks (Next.js, Cloudflare Workers, Fastly) emit it automatically; absence on a managed platform usually means telemetry headers are stripped at the edge.

Green Hosting

Action

Whether the site is served from green-energy infrastructure

REVIEW

Green Hosting

No green hosting detected

Page Weight Budget

1001 KB transferred, 46 requests

PASS

1001 KB transferred, 46 requests

Page weighs 2.1 MB (1001 KB transferred)

46 HTTP requests

Estimated 0.21 g CO2 per page load

1001 KB transferred

46 requests

0.21 g CO2 per page load

Images 497.0 KiB 50%

JavaScript 319.1 KiB 32%

Fonts 69.2 KiB 7%

Other 68.0 KiB 7%

CSS 39.9 KiB 4%

Other 6.5 KiB 1%

HTML 1.3 KiB 0%

Other 244 B 0%

Other 0 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+

Image Optimization

19 images, 0 KB saveable

PASS

19 images, 0 KB saveable

All images are well-optimized

19 images 497 KB

0 oversized -0 KB

1 legacy format

0 missing dimensions CLS risk

A+

Font Loading

2 fonts (69 KB)

PASS

2 fonts (69 KB)

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

Web fonts

69 KB total

Render-blocking

of 2

Dominant font-display

swap

Most common across fonts

Font loading timeline

Transfer FOIT (block) FOUT (swap)

V8mDoQDjQSkFtoMM3T6r8E7... woff2 swap

Size 22 KB

Load time 8 ms

Start 830 ms

Risk FOUT — text flashes from fallback to web font

UcC73FwrK3iLTeHuS_nVMrM... woff2 swap

Size 47 KB

Load time 9 ms

Start 831 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+

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

2 hints, 0 missing preconnects

PASS

2 hints, 0 missing preconnects

Page uses 2 resource hint(s)

Current Resource Hints

preconnect

preload

—

dns-prefetch

—

prefetch

—

2 resource hints configured

A+

HTTP/3 (QUIC)

HTTP/3 advertised via Alt-Svc

PASS

HTTP/3 advertised via Alt-Svc

HTTP/3 (QUIC) is supported

First-load mobile users on cellular networks see meaningful latency improvements with HTTP/3. The QUIC transport collapses TLS + TCP handshakes into one and recovers faster from packet loss.

A+

LCP Image Preload

LCP preload audit not available

PASS

LCP preload audit not available

LCP image preload audit not available for this scan

A+

Main HTML Cache-Control

Main HTML max-age=0 (≤ 5min) is appropriate

PASS

Main HTML max-age=0 (≤ 5min) is appropriate

Got: public, max-age=0, s-maxage=60

A+

Server Response Intelligence

2 server-response signal(s) detected

PASS

2 server-response signal(s) detected

`Vary` header declared: Accept-Encoding

The page declares a `Vary` header, telling downstream caches which request headers the response varies on. Critical for content-negotiated responses (compression, language, cookies, device class).

Both `ETag` and `Last-Modified` present -- efficient revalidation supported

The page returns both `ETag` (content hash) and `Last-Modified` (timestamp) headers. Browsers can issue conditional GETs with `If-None-Match` or `If-Modified-Since`; the server returns 304 Not Modified for unchanged content, saving bandwidth. ETag is the more reliable of the two (timestamps fail in DST transitions and clock skew).

Page Weight Inventory

46 resources · 1001 KB · 125 KB savings available

PASS

46 resources · 1001 KB · 125 KB savings available

Within 1MB page-weight target

Got: 1001 KB

~125 KB of savings available

33 third-party resources (59% of weight)

46 resources · 1001.2 KiB · 33 third-party Within 1MB page-weight target

Image 56% · 565.0 KiB

JavaScript 32% · 319.1 KiB

Font 7% · 69.2 KiB

CSS 4% · 39.9 KiB

Other 1% · 6.7 KiB

Document 0% · 1.3 KiB

~124.9 KiB of savings available

Remove unused JavaScript: 124.9 KiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

46 resources			1001.2 KiB

A+

Render-Blocking Resources

No render-blocking resources detected

PASS

No render-blocking resources detected

No render-blocking resources detected in <head>

A+

Third-Party Resources

No third-party resources detected

PASS

No third-party resources detected

A+

JavaScript Blocking

No render-blocking JS or document.write usage detected

PASS

No render-blocking JS or document.write usage detected

No JavaScript blocking issues detected

A+

CSS Performance Depth

No CSS performance depth issues detected

PASS

No CSS performance depth issues detected

HTTP Caching

public, max-age=0, s-maxage=60

PASS

public, max-age=0, s-maxage=60

Cache-Control header is set

Got: public, max-age=0, s-maxage=60

CDN TTL: 1 minute (s-maxage=60)

ETag present — enables conditional (304) responses

Last-Modified header present

Cache-Control

public, max-age=0, s-maxage=60

Directive	Value	Meaning
public	—	Any cache may store this response
max-age	0	Cache for 0 seconds
s-maxage	60	CDN caches for 1 minute

Network Waterfall

46 requests over 6025ms

INFO

HTML JavaScript CSS Images Fonts XHR/Fetch Other

Third-Party Script Cost

Per-script blocking time, transfer cost, and cache headers

INFO

41% of JavaScript execution is third-party

First-party Third-party 677ms · 19KB · $9/mo

Script	Category	Execution	Transfer	Unused	Monthly Cost	Verdict
Unattributable Unattributable	Other	444ms	0 KB	—	$6/mo	Costly
www.redditstatic.com www.redditstatic.com	Other	234ms	19 KB	—	$3/mo	Costly

Unattributable

Other

Costly

Execution 444ms

Transfer 0 KB

Monthly Cost $6/mo

www.redditstatic.com

Other

Costly

Execution 234ms

Transfer 19 KB

Monthly Cost $3/mo

These scripts may cost more than they're worth

Unattributable adds 444ms and costs ~$6/month
www.redditstatic.com adds 234ms and costs ~$3/month

41% 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

Unattributable takes 444ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

www.redditstatic.com takes 234ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

How third-party costs are calculated

Real-User Performance (CrUX)

Field metrics from the Chrome User Experience Report

INFO

Chrome User Experience (CrUX)

Real-user metrics from the Chrome UX Report (2026-04-11 — 2026-05-08)

LCP (p75)

4477 ms

43% good

INP (p75)

107 ms

91% good

CLS (p75)

0.230

54% good

FCP (p75)

1517 ms

TTFB (p75)

834 ms

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.