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https://www.appsero.site

Performance

· 25 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
93
GRADE
A
FIX
1
REVIEW
5
PASS
17
INFO
2

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

Mobile Desktop
74
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
94
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
96
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
100
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

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

3.99 s

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

4.29 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.

4.95 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.

4.32 s

Page Load Progression

583 ms
1.2 s
1.7 s
2.3 s
2.9 s
3.5 s
4.1 s
4.7 s
Checks
25
17 PASS 5 REVIEW 1 FIX
D
Third-Party Impact
Action
77% third-party, 0 ms blocking
FIX
77% third-party, 0 ms blocking
Warning::
Third-party code accounts for 77% of page weight (343.8 KiB of 443.7 KiB)
Info::
Third-party blocking time is low (0 ms)
23%
77%
First-party Third-party
C
JS Execution Cost
Action
1686ms total JS execution
REVIEW
1686ms total JS execution
Warning::
https://www.appsero.site/assets/index-C1_ALZ4e.js: 880ms CPU time
Warning::
https://www.appsero.site/: 668ms CPU time
Info::
Unattributable: 138ms CPU time

Main Thread Breakdown

Other 32% Style & Layout 31% Script Evaluation 25% Rendering 12%
ScriptTotalScriptingParse/CompileParty
https://www.appsero.site/assets/index-C1_ALZ4e.js880ms391ms2ms1st
https://www.appsero.site/668ms22ms1ms1st
Unattributable138ms5ms0ms1st
B
HTTP/3 (QUIC)
HTTP/3 not advertised
REVIEW
HTTP/3 not advertised
Info::
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.
B
Server-Timing Observability
No Server-Timing header found
REVIEW
No Server-Timing header found
Info::
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.
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

B
HTTP Caching
public,max-age=0,must-revalidate
REVIEW
public,max-age=0,must-revalidate
Info::
Cache-Control header is set
Got: public,max-age=0,must-revalidate
Info::
ETag present — enables conditional (304) responses
Cache-Control

public,max-age=0,must-revalidate

DirectiveValueMeaning
public—Any cache may store this response
max-age0Cache for 0 seconds
must-revalidate—Must recheck with server after expiry
A+
Page Weight Budget
444 KB transferred, 13 requests
PASS
444 KB transferred, 13 requests
Info::
Page weighs 729 KB (444 KB transferred)
Info::
Fonts are 231 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 231 KB
Info::
13 HTTP requests
Info::
Estimated 0.09 g CO2 per page load
444 KB / 2.4 MB budget
444 KB transferred
13 requests
0.09 g CO2 per page load
Fonts 231.4 KiB 52%
Images 110.4 KiB 25%
JavaScript 91.4 KiB 21%
CSS 8.2 KiB 2%
Other 1.3 KiB 0%
HTML 933 B 0%
0 2.4 MB 4.9 MB
Under budget

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

A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+
Image Optimization
4 images, 0 KB saveable
PASS
4 images, 0 KB saveable
Info::
All images are well-optimized
4 images 110 KB
0 oversized -0 KB
0 legacy format
0 missing dimensions CLS risk
A+
Font Loading
4 fonts (231 KB)
PASS
4 fonts (231 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

231 KB total

Render-blocking

0

of 4

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 1.0 s 2.0 s 3.0 s 4.0 s FCP 4.0 s LCP 4.3 shttps://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa1ZL7W0Q5nw.woff2UcC73FwrK3iLTeHuS_nVMrM... https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa1ZL7W0Q5nw.woff2 — 47.3 KiB — 49 ms — font-display: swaphttps://fonts.gstatic.com/s/fraunces/v38/6NU58FyLNQOQZAnv9ZwNjucMHVn85Ni7emAe9lKqZTnbB-gzTK0K1ChjeveQ7ZXk8g.woff26NU58FyLNQOQZAnv9ZwNjuc... https://fonts.gstatic.com/s/fraunces/v38/6NU58FyLNQOQZAnv9ZwNjucMHVn85Ni7emAe9lKqZTnbB-gzTK0K1ChjeveQ7ZXk8g.woff2 — 79.8 KiB — 67 ms — font-display: swaphttps://fonts.gstatic.com/s/fraunces/v38/6NU78FyLNQOQZAnv9bYEvDiIdE9Ea92uemAk_WBq8U_9v0c2Wa0KxC9TeP2Xz5c.woff26NU78FyLNQOQZAnv9bYEvDi... https://fonts.gstatic.com/s/fraunces/v38/6NU78FyLNQOQZAnv9bYEvDiIdE9Ea92uemAk_WBq8U_9v0c2Wa0KxC9TeP2Xz5c.woff2 — 65.8 KiB — 69 ms — font-display: swaphttps://fonts.gstatic.com/s/cormorantgaramond/v21/co3ZmX5slCNuHLi8bLeY9MK7whWMhyjYrEtImSqn7B6D.woff2co3ZmX5slCNuHLi8bLeY9MK... https://fonts.gstatic.com/s/cormorantgaramond/v21/co3ZmX5slCNuHLi8bLeY9MK7whWMhyjYrEtImSqn7B6D.woff2 — 38.4 KiB — 62 ms — font-display: swap
UcC73FwrK3iLTeHuS_nVMrM... woff2 swap
Size 47 KB
Load time 49 ms
Start 550 ms
Risk FOUT — text flashes from fallback to web font
6NU58FyLNQOQZAnv9ZwNjuc... woff2 swap
Size 80 KB
Load time 67 ms
Start 550 ms
Risk FOUT — text flashes from fallback to web font
6NU78FyLNQOQZAnv9bYEvDi... woff2 swap
Size 66 KB
Load time 69 ms
Start 550 ms
Risk FOUT — text flashes from fallback to web font
co3ZmX5slCNuHLi8bLeY9MK... woff2 swap
Size 38 KB
Load time 62 ms
Start 551 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
1 scripts, 35 KB unused
PASS
1 scripts, 35 KB unused
Warning::
https://www.appsero.site/assets/index-C1_ALZ4e.js: 35 KB unused (39%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 35 KB
35 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.appsero.site/assets/index-C1_ALZ4e.js91 KB35 KB (39%)✓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+
Resource Caching
All resources properly cached
PASS
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+
Critical Rendering Path
No render-blocking resources
PASS
No render-blocking resources
Info::
No render-blocking resources detected
A+
Resource Hints
2 hints, 0 missing preconnects
PASS
2 hints, 0 missing preconnects
Info::
Page uses 2 resource hint(s)

Current Resource Hints

preconnect
2
preload
—
dns-prefetch
—
prefetch
—

2 resource hints configured

A+
Compression Algorithm
Main response uses brotli
PASS
Main response uses brotli
Info::
Main HTML response uses brotli (Content-Encoding: br)
Brotli is the best text-compression algorithm for general use, ~20% smaller than gzip on average (40% on smaller files). Modern browsers all support it.
A+
LCP Image Preload
LCP preload audit not available
PASS
LCP preload audit not available
Info::
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
Info::
Main HTML max-age=0 (≤ 5min) is appropriate
Got: public,max-age=0,must-revalidate
A+
Server Response Intelligence
3 server-response signal(s) detected
PASS
3 server-response signal(s) detected
Info::
`Cache-Status` header present (RFC 9211): "Netlify Edge"; fwd=miss; fwd-status=200; stored
The page returns a `Cache-Status` header -- the standardized way for CDNs and caches to communicate per-hop cache state to debugging tools. Format: `Cache-Status: cdn-name; hit; ttl=300` (or `; fwd=miss` / `; fwd=stale`). Standard alternative to vendor-specific `X-Cache` patterns each CDN had historically. Cloudflare, Fastly, and Akamai all support emitting it.
Info::
`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).
Info::
`ETag` present -- conditional GET supported
A
Page Weight Inventory
13 resources · 444 KB · 35 KB savings available
PASS
13 resources · 444 KB · 35 KB savings available
Info::
Within 1MB page-weight target
Got: 444 KB
Warning::
9 third-party resources (77% of weight)
13 resources · 443.7 KiB · 9 third-party Within 1MB page-weight target
Font 52% · 231.4 KiB
Image 25% · 110.4 KiB
JavaScript 21% · 91.4 KiB
CSS 2% · 8.2 KiB
Document 1% · 2.2 KiB

~35.5 KiB of savings available

Remove unused JavaScript: 35.5 KiB
A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
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
Info::
No JavaScript blocking issues detected
A+
CSS Performance Depth
No CSS performance depth issues detected
PASS
No CSS performance depth issues detected
Info::
No CSS performance depth issues detected
Network Waterfall
13 requests over 1389ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s FCP 4.0 s LCP 4.3 shttps://www.appsero.site// https://www.appsero.site/ — 200 — 933 B — 85 ms — h2https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300;0,9..144,400;0,9..144,500;0,9..144,600;0,9..144,700;1,9..144,300;1,9..144,400;1,9..144,500;1,9..144,600&family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;0,600;0,700;1,300;1,400;1,500;1,600&family=Inter:wght@300;400;500;600&display=swapfonts.googleapis.com/css2?family=Fr... https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300;0,9..144,400;0,9..144,500;0,9..144,600;0,9..144,700;1,9..144,300;1,9..144,400;1,9..144,500;1,9..144,600&family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;0,600;0,700;1,300;1,400;1,500;1,600&family=Inter:wght@300;400;500;600&display=swap — 200 — 1.9 KiB — 97 ms — h2https://www.appsero.site/assets/index-C1_ALZ4e.js/assets/index-C1_ALZ4e.js https://www.appsero.site/assets/index-C1_ALZ4e.js — 200 — 91.4 KiB — 343 ms — h2https://www.appsero.site/assets/index-C1nJPH7K.css/assets/index-C1nJPH7K.css https://www.appsero.site/assets/index-C1nJPH7K.css — 200 — 6.3 KiB — 297 ms — h2https://images.pexels.com/photos/29785590/pexels-photo-29785590.jpeg?auto=compress&cs=tinysrgb&h=900&w=600images.pexels.com/photos/29785590/p... https://images.pexels.com/photos/29785590/pexels-photo-29785590.jpeg?auto=compress&cs=tinysrgb&h=900&w=600 — 200 — 27.6 KiB — 98 ms — h3data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='…www.w3.org/2000/svg'%3E%3Cfilter id... data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='… — 200 — 0 B — 0 ms — datahttps://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa1ZL7W0Q5nw.woff2fonts.gstatic.com/s/inter/v20/UcC73... https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa1ZL7W0Q5nw.woff2 — 200 — 47.3 KiB — 49 ms — h3https://fonts.gstatic.com/s/fraunces/v38/6NU58FyLNQOQZAnv9ZwNjucMHVn85Ni7emAe9lKqZTnbB-gzTK0K1ChjeveQ7ZXk8g.woff2fonts.gstatic.com/s/fraunces/v38/6N... https://fonts.gstatic.com/s/fraunces/v38/6NU58FyLNQOQZAnv9ZwNjucMHVn85Ni7emAe9lKqZTnbB-gzTK0K1ChjeveQ7ZXk8g.woff2 — 200 — 79.8 KiB — 67 ms — h3https://fonts.gstatic.com/s/fraunces/v38/6NU78FyLNQOQZAnv9bYEvDiIdE9Ea92uemAk_WBq8U_9v0c2Wa0KxC9TeP2Xz5c.woff2fonts.gstatic.com/s/fraunces/v38/6N... https://fonts.gstatic.com/s/fraunces/v38/6NU78FyLNQOQZAnv9bYEvDiIdE9Ea92uemAk_WBq8U_9v0c2Wa0KxC9TeP2Xz5c.woff2 — 200 — 65.8 KiB — 69 ms — h3https://fonts.gstatic.com/s/cormorantgaramond/v21/co3ZmX5slCNuHLi8bLeY9MK7whWMhyjYrEtImSqn7B6D.woff2fonts.gstatic.com/s/cormorantgaramo... https://fonts.gstatic.com/s/cormorantgaramond/v21/co3ZmX5slCNuHLi8bLeY9MK7whWMhyjYrEtImSqn7B6D.woff2 — 200 — 38.4 KiB — 62 ms — h3https://www.appsero.site/favicon.ico/favicon.ico https://www.appsero.site/favicon.ico — 404 — 1.3 KiB — 328 ms — h2https://images.pexels.com/photos/20130507/pexels-photo-20130507.jpeg?auto=compress&cs=tinysrgb&h=1100&w=800images.pexels.com/photos/20130507/p... https://images.pexels.com/photos/20130507/pexels-photo-20130507.jpeg?auto=compress&cs=tinysrgb&h=1100&w=800 — 200 — 45.7 KiB — 50 ms — h3https://images.pexels.com/photos/29785590/pexels-photo-29785590.jpeg?auto=compress&cs=tinysrgb&h=1100&w=800images.pexels.com/photos/29785590/p... https://images.pexels.com/photos/29785590/pexels-photo-29785590.jpeg?auto=compress&cs=tinysrgb&h=1100&w=800 — 200 — 37.1 KiB — 62 ms — h3
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Image Optimization
34 images, 0 KB total, 0 KB wasted
INFO

Image Optimization Audit

Total Images

34

Total Size

0 KB

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

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