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

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.

398 ms

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

1.52 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.

0.000

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

1.22 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.

1.54 s

Page Load Progression

508 ms

1.0 s

1.5 s

2.0 s

2.5 s

3.0 s

3.6 s

4.1 s

Checks

12 PASS 6 REVIEW 1 FIX

HTTP Caching

Action

No cache headers

FIX

No cache headers

No Cache-Control header found

Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

Page Weight Budget

Action

1.8 MB transferred, 59 requests

REVIEW

1.8 MB transferred, 59 requests

Page weighs 3.9 MB (1.8 MB transferred)

JavaScript is 561 KB — consider code splitting or lazy loading

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

Got: 561 KB

Fonts are 259 KB — consider subsetting or using system fonts

Subset fonts to include only used characters, or switch to system font stacks.

Got: 259 KB

59 HTTP requests

Estimated 0.38 g CO2 per page load

1.8 MB transferred

59 requests

0.38 g CO2 per page load

Images 959.0 KiB 52%

JavaScript 560.8 KiB 30%

Fonts 258.5 KiB 14%

HTML 43.1 KiB 2%

CSS 32.8 KiB 2%

Other 877 B 0%

Other 46 B 0%

0 2.4 MB 4.9 MB

Approaching limit

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

Subset fonts to include only used characters, or switch to system font stacks.

Why this matters

Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).

Source: web.dev font loading

Image Optimization

9 images, 0 KB saveable

REVIEW

9 images, 0 KB saveable

All images are well-optimized

9 images 959 KB

0 oversized -0 KB

8 legacy format

0 missing dimensions CLS risk

Main HTML Cache-Control

No Cache-Control header on main HTML response

REVIEW

No Cache-Control header on main HTML response

Main HTML response has no Cache-Control header

Without an explicit Cache-Control, browsers fall back to heuristic caching (~10% of Last-Modified age). Set `Cache-Control: no-cache` or `max-age=300` for HTML to control freshness explicitly -- prevents stale auth state and SPA shell drift.

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

59 resources · 1.8 MB · 40 KB savings available

REVIEW

59 resources · 1.8 MB · 40 KB savings available

Page weight 1.8 MB exceeds 1 MB target by 831 KB

Got: 1.8 MB Expected: ≤ 1 MB

25 third-party resources (35% of weight)

2 resources over 200KB

59 resources · 1.8 MiB · 25 third-party 831.1 KiB over 1MB target

Image 52% · 959.0 KiB

JavaScript 30% · 560.8 KiB

Font 14% · 258.5 KiB

Document 2% · 44.0 KiB

CSS 2% · 32.8 KiB

Other 0% · 46 B

~40.5 KiB of savings available

Remove unused JavaScript: 40.5 KiB

#	Resource	Type	Size	Cache	Unused	3rd party	Issues

59 resources			1.8 MiB

Green Hosting

Action

Whether the site is served from green-energy infrastructure

REVIEW

Green Hosting

No green hosting detected

Third-Party Impact

35% third-party, 0 ms blocking

PASS

35% third-party, 0 ms blocking

Third-party code accounts for 35% of page weight (643.5 KiB of 1.8 MiB)

Third-party blocking time is low (0 ms)

65%

35%

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+

JS Execution Cost

299ms total JS execution

PASS

299ms total JS execution

https://radiocomanda.ro/: 233ms CPU time

Unattributable: 67ms CPU time

Main Thread Breakdown

Other 33% Style & Layout 29% Script Evaluation 21% Rendering 8% Parse HTML & CSS 5% Script Parsing & Compilation 4%

Script	Total	Scripting	Parse/Compile	Party
https://radiocomanda.ro/	233ms	3ms	2ms	1st
Unattributable	67ms	2ms	0ms	1st

A+

Font Loading

7 fonts (259 KB)

PASS

7 fonts (259 KB)

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

Web fonts

259 KB total

Render-blocking

of 7

Dominant font-display

swap

Most common across fonts

Font loading timeline

Transfer FOIT (block) FOUT (swap)

memSYaGs126MiZpBA-UvWbX... woff2 swap

Size 25 KB

Load time 146 ms

Start 1.1 s