Performance

· 22 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.

1.30 s

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

2.38 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.

0.023

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

1.30 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.

2.38 s

Page Load Progression

447 ms

894 ms

1.3 s

1.8 s

2.2 s

2.7 s

3.1 s

3.6 s

Checks

10 PASS 8 REVIEW 1 FIX

Page Weight Budget

Action

3.5 MB transferred, 39 requests

FIX

3.5 MB transferred, 39 requests

Page weighs 5.5 MB (3.5 MB transferred)

Images are 2.7 MB — compress or use modern formats

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

Got: 2.7 MB

JavaScript is 672 KB — consider code splitting or lazy loading

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

Got: 672 KB

39 HTTP requests

Estimated 0.73 g CO2 per page load

3.5 MB transferred

39 requests

0.73 g CO2 per page load

Images 2.7 MiB 78%

JavaScript 671.7 KiB 19%

Fonts 90.6 KiB 3%

HTML 27.0 KiB 1%

CSS 2.0 KiB 0%

Other 789 B 0%

Other 785 B 0%

Other 46 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

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

Image Optimization

15 images, 0 KB saveable

REVIEW

15 images, 0 KB saveable

All images are well-optimized

15 images 2.7 MB

0 oversized -0 KB

14 legacy format

0 missing dimensions CLS risk

JS Execution Cost

707ms total JS execution

REVIEW

707ms total JS execution

https://ttmb-coffee.surge.sh/: 461ms CPU time

Unattributable: 246ms CPU time

Main Thread Breakdown

Other 35% Script Evaluation 35% Style & Layout 19% Rendering 4% Script Parsing & Compilation 3%

Script	Total	Scripting	Parse/Compile	Party
https://ttmb-coffee.surge.sh/	461ms	227ms	2ms	1st
Unattributable	246ms	1ms	0ms	1st

HTTP/3 (QUIC)

HTTP/3 not advertised

REVIEW

HTTP/3 not advertised

HTTP/3 (QUIC) is not advertised

HTTP/3 isn't advertised via Alt-Svc and the worker didn't negotiate h3. HTTP/3 reduces handshake latency (1-RTT instead of 2-3 RTTs) and is more resilient on lossy connections. Most modern CDNs (Cloudflare, Fastly, AWS CloudFront, Google Cloud CDN) support HTTP/3 with a single config switch -- consider enabling for mobile-heavy workloads.

Document Compression

Document response uses gzip; brotli would be ~20% smaller

REVIEW

Document response uses gzip; brotli would be ~20% smaller

Main HTML response uses gzip (brotli would be ~20% smaller)

All current browsers support brotli. Most CDNs (Cloudflare, Fastly, AWS CloudFront, Vercel, Netlify) can switch from gzip to brotli with a single config flag. Origin servers (nginx, Apache) need a brotli module compiled in -- nginx-brotli or Apache mod_brotli.

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.

Page Weight Inventory

Action

39 resources · 3.5 MB · 0 KB savings available

REVIEW

39 resources · 3.5 MB · 0 KB savings available

Page weight 3.5 MB exceeds 1 MB target by 2.5 MB

Got: 3.5 MB Expected: ≤ 1 MB

22 third-party resources (21% of weight)

6 resources over 200KB

39 resources · 3.5 MiB · 22 third-party 2.5 MiB over 1MB target

Image 78% · 2.7 MiB

JavaScript 19% · 671.7 KiB

Font 3% · 90.6 KiB

Document 1% · 27.0 KiB

CSS 0% · 2.0 KiB

Other 0% · 1.6 KiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

39 resources			3.5 MiB

Green Hosting

Action

Whether the site is served from green-energy infrastructure

REVIEW

Green Hosting

No green hosting detected

HTTP Caching

public, max-age=0, must-revalidate

REVIEW

public, max-age=0, must-revalidate

Cache-Control header is set

Got: public, max-age=0, must-revalidate

ETag present — enables conditional (304) responses

Cache-Control

public, max-age=0, must-revalidate

Directive	Value	Meaning
public	—	Any cache may store this response
max-age	0	Cache for 0 seconds
must-revalidate	—	Must recheck with server after expiry

Third-Party Impact

21% third-party, 0 ms blocking

PASS

21% third-party, 0 ms blocking

Third-party code accounts for 21% of page weight (755.1 KiB of 3.5 MiB)

Third-party blocking time is low (0 ms)

79%

21%

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

3 fonts (91 KB)

PASS

3 fonts (91 KB)

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

Web fonts

91 KB total

Render-blocking

of 3

Dominant font-display

swap

Most common across fonts

Font loading timeline

Transfer FOIT (block) FOUT (swap)

nuFiD-vYSZviVYUb_rj3ij_... woff2 swap

Size 38 KB

Load time 95 ms

Start 693 ms

Risk FOUT — text flashes from fallback to web font

QGYvz_MVcBeNP4NJtEtqUYL... woff2 swap

Size 32 KB

Load time 91 ms

Start 693 ms

Risk FOUT — text flashes from fallback to web font

nuFRD-vYSZviVYUb_rj3ij_... woff2 swap

Size 21 KB

Load time 93 ms

Start 694 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+

JS Bundles

14 scripts, 0 KB unused

PASS

14 scripts, 0 KB unused

0 KB unused JavaScript

Downloaded but never executed on this page.

Script	Size	Unused	Minified	Party
https://cdn.tailwindcss.com/3.4.17	124 KB	—	✓	3rd
https://unpkg.com/lucide@1.66.0/dist/umd/lucide.min.js	110 KB	—	✓	3rd
https://ttmb-coffee.surge.sh/menuData.js	11 KB	—	✓	1st
https://maps.gstatic.com/maps-api-v3/embed/js/66/12d/init_embed.js	75 KB	—	✓	3rd
https://maps.googleapis.com/maps/api/js?key=AIzaSyCmL18misQw9KdwqGaw3zHkitj8vG6QF2Y&paint_origin=&libraries=geometry,search&v=weekly&loading=async&language=en&region=ae&experimentation=allowed&callback=onApiLoad	3 KB	—	✓	3rd
https://maps.googleapis.com/maps-api-v3/api/js/66/12d/geometry.js	3 KB	—	✓	3rd
https://maps.googleapis.com/maps-api-v3/api/js/66/12d/search.js	1 KB	—	✓	3rd
https://maps.googleapis.com/maps-api-v3/api/js/66/12d/main.js	85 KB	—	✓	3rd
https://maps.googleapis.com/maps-api-v3/api/js/66/12d/common.js	37 KB	—	✓	3rd
https://maps.googleapis.com/maps-api-v3/api/js/66/12d/util.js	71 KB	—	✓	3rd

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

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, must-revalidate

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).

`ETag` present -- conditional GET supported

Asset Compression

No text asset hosts to measure

INFO

No text asset hosts to measure

No third-party or subdomain host served enough text assets to measure

Asset compression is measured per host, from one HEAD request against a sampled resource. Pages that serve all their JS and CSS from the document's own origin are covered by the document compression check instead.

Network Waterfall

39 requests over 1249ms

INFO

HTML JavaScript CSS Images Fonts XHR/Fetch Other

Image Optimization

65 images, 3549 KB total, 2521 KB wasted

INFO

Image Optimization Audit

Total Images

Total Size

3549 KB

Oversized

Wasted

2521 KB

65 missing dimensions 9 missing lazy loading

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