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https://phongtamphuoctien.vn

Performance

· 24 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
92
GRADE
A
FIX
2
REVIEW
5
PASS
16
INFO
1

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

87
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
87
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.
92
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.

2.87 s

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

3.28 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.

0.002

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

3.05 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.

3.28 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
24
16 PASS 5 REVIEW 2 FIX
D
Third-Party Impact
Action
79% third-party, 0 ms blocking
FIX
79% third-party, 0 ms blocking
Warning::
Third-party code accounts for 79% of page weight (369.2 KiB of 470.1 KiB)
Info::
Third-party blocking time is low (0 ms)
21%
79%
First-party Third-party
F
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
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.

C
Image Optimization
Action
45 images, 0 KB saveable
REVIEW
45 images, 0 KB saveable
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/plugins/sm... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/plugins/sm... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://phongtamphuoctien.vn/wp-content/uploads/20... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
45 images 55 KB
0 oversized -0 KB
45 legacy format
44 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

B
JS Execution Cost
822ms total JS execution
REVIEW
822ms total JS execution
Warning::
https://phongtamphuoctien.vn/: 489ms CPU time
Warning::
Unattributable: 333ms CPU time

Main Thread Breakdown

Other 45% Style & Layout 22% Rendering 15% Script Evaluation 9% Parse HTML & CSS 7%
ScriptTotalScriptingParse/CompileParty
https://phongtamphuoctien.vn/489ms27ms7ms1st
Unattributable333ms8ms0ms1st
B
Main HTML Cache-Control
No Cache-Control header on main HTML response
REVIEW
No Cache-Control header on main HTML response
Info::
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.
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

A+
Page Weight Budget
470 KB transferred, 90 requests
PASS
470 KB transferred, 90 requests
Info::
Page weighs 844 KB (470 KB transferred)
Info::
Fonts are 294 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 294 KB
Info::
90 HTTP requests
Info::
Estimated 0.10 g CO2 per page load
470 KB / 2.4 MB budget
470 KB transferred
90 requests
0.10 g CO2 per page load
Fonts 293.7 KiB 62%
JavaScript 63.1 KiB 13%
Images 55.8 KiB 12%
CSS 27.4 KiB 6%
HTML 25.8 KiB 5%
Other 2.5 KiB 1%
Other 1.4 KiB 0%
Other 399 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+
Font Loading
5 fonts (294 KB)
PASS
5 fonts (294 KB)
Info::
5 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

5

294 KB total

Render-blocking

0

of 5

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 FCP 2.9 s LCP 3.3 shttps://phongtamphuoctien.vn/wp-content/themes/az9s-page/fonts/FORDANTENNAWGL-REGULAR.OTFFORDANTENNAWGL-REGULAR.OTF https://phongtamphuoctien.vn/wp-content/themes/az9s-page/fonts/FORDANTENNAWGL-REGULAR.OTF — 21 B — 529 ms — font-display: swaphttps://phongtamphuoctien.vn/wp-content/themes/az9s-page/fonts/FORDANTENNAWGL-SEMIBOLD.OTFFORDANTENNAWGL-SEMIBOLD... https://phongtamphuoctien.vn/wp-content/themes/az9s-page/fonts/FORDANTENNAWGL-SEMIBOLD.OTF — 21 B — 528 ms — font-display: swaphttps://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.0/webfonts/fa-solid-900.woff2fa-solid-900.woff2 https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.0/webfonts/fa-solid-900.woff2 — 153.6 KiB — 57 ms — font-display: swaphttps://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.0/webfonts/fa-regular-400.woff2fa-regular-400.woff2 https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.0/webfonts/fa-regular-400.woff2 — 25.5 KiB — 65 ms — font-display: swaphttps://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.0/webfonts/fa-brands-400.woff2fa-brands-400.woff2 https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.0/webfonts/fa-brands-400.woff2 — 114.6 KiB — 71 ms — font-display: swap
FORDANTENNAWGL-REGULAR.OTF otf swap
Size 0 KB
Load time 529 ms
Start 835 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
FORDANTENNAWGL-SEMIBOLD... otf swap
Size 0 KB
Load time 528 ms
Start 836 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
fa-solid-900.woff2 woff2 swap
Size 154 KB
Load time 57 ms
Start 1.3 s
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
fa-regular-400.woff2 woff2 swap
Size 26 KB
Load time 65 ms
Start 1.3 s
Risk FOUT — text flashes from fallback to web font
fa-brands-400.woff2 woff2 swap
Size 115 KB
Load time 71 ms
Start 1.3 s
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
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)

Fixing the unchecked items could save ~134 KB and ~268 ms

A+
JS Bundles
16 scripts, 42 KB unused
PASS
16 scripts, 42 KB unused
Warning::
https://cdn.jsdelivr.net/npm/swiper@11/swiper-bund...: 42 KB unused (97%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 42 KB
42 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://cdn.jsdelivr.net/npm/swiper@11/swiper-bundle.min.js?ver=11.0.043 KB42 KB (97%)✓3rd
https://phongtamphuoctien.vn/wp-content/plugins/woocommerce/assets/js/frontend/order-attribution.min.js?ver=10.9.40 KB—✓1st
https://phongtamphuoctien.vn/wp-content/plugins/woocommerce/assets/js/js-cookie/js.cookie.min.js?ver=2.1.4-wc.10.9.40 KB—✓1st
https://unpkg.com/aos@2.3.4/dist/aos.js5 KB—✓3rd
https://phongtamphuoctien.vn/wp-includes/js/jquery/jquery-migrate.min.js?ver=3.4.10 KB—✓1st
https://phongtamphuoctien.vn/wp-content/themes/az9s-page/assets/main.js?ver=17827859600 KB—✓1st
https://phongtamphuoctien.vn/wp-content/themes/az9s-page/assets/banner-slider.js?ver=17827859600 KB—✓1st
https://phongtamphuoctien.vn/wp-content/plugins/all-in-one-wp-security-and-firewall/js/remove-weak-pw.js?ver=5.4.90 KB—✓1st
https://phongtamphuoctien.vn/wp-content/plugins/woocommerce/assets/js/jquery-blockui/jquery.blockUI.min.js?ver=2.7.0-wc.10.9.40 KB—✓1st
https://phongtamphuoctien.vn/wp-content/plugins/woocommerce/assets/js/sourcebuster/sourcebuster.min.js?ver=10.9.40 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+
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
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
A+
HTTP/3 (QUIC)
HTTP/3 advertised via Alt-Svc
PASS
HTTP/3 advertised via Alt-Svc
Info::
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+
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+
Server Response Intelligence
2 server-response signal(s) detected
PASS
2 server-response signal(s) detected
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::
No `ETag` or `Last-Modified` -- conditional GET not supported
Without either header, browsers can't issue conditional GETs and refresh always re-downloads the full response body even when nothing changed. Add `ETag: "<hash>"` (or `Last-Modified: <date>`) on cacheable responses; the server returns 304 Not Modified when the client's cached copy is still valid, saving bandwidth.
A
Page Weight Inventory
90 resources · 470 KB · 42 KB savings available
PASS
90 resources · 470 KB · 42 KB savings available
Info::
Within 1MB page-weight target
Got: 470 KB
Warning::
9 third-party resources (79% of weight)
90 resources · 470.1 KiB · 9 third-party Within 1MB page-weight target
Font 62% · 293.7 KiB
JavaScript 13% · 63.1 KiB
Image 12% · 55.8 KiB
Document 6% · 28.3 KiB
CSS 6% · 27.4 KiB
Media 0% · 1.4 KiB
Other 0% · 399 B

~41.9 KiB of savings available

Remove unused JavaScript: 41.9 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
90 requests over 3431ms
INFO
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200 — 19.1 KiB — 106 ms — h3https://unpkg.com/aos@2.3.4/dist/aos.cssunpkg.com/aos@2.3.4/dist/aos.css https://unpkg.com/aos@2.3.4/dist/aos.css — 200 — 2.6 KiB — 79 ms — h3https://phongtamphuoctien.vn/wp-includes/js/jquery/jquery.min.js?ver=3.7.1/wp-includes/js/jquery/jquery.min.j... https://phongtamphuoctien.vn/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 — 403 — 21 B — 338 ms — h2https://phongtamphuoctien.vn/wp-includes/js/jquery/jquery-migrate.min.js?ver=3.4.1/wp-includes/js/jquery/jquery-migra... https://phongtamphuoctien.vn/wp-includes/js/jquery/jquery-migrate.min.js?ver=3.4.1 — 403 — 21 B — 323 ms — h2https://phongtamphuoctien.vn/wp-content/uploads/2022/04/logo-phong-tam-phuoc-tien.png/wp-content/uploads/2022/04/logo-ph... https://phongtamphuoctien.vn/wp-content/uploads/2022/04/logo-phong-tam-phuoc-tien.png — 403 — 1.2 KiB — 325 ms — h2https://phongtamphuoctien.vn/wp-content/plugins/smart-contact-floating/assets/icons/zalo.png/wp-content/plugins/smart-contact-f... https://phongtamphuoctien.vn/wp-content/plugins/smart-contact-floating/assets/icons/zalo.png — 403 — 1.2 KiB — 585 ms — h2https://phongtamphuoctien.vn/wp-content/plugins/smart-contact-floating/assets/icons/phone.png/wp-content/plugins/smart-contact-f... https://phongtamphuoctien.vn/wp-content/plugins/smart-contact-floating/assets/icons/phone.png — 403 — 1.2 KiB — 566 ms — h2https://phongtamphuoctien.vn/wp-content/plugins/all-in-one-wp-security-and-firewall/js/remove-weak-pw.js?ver=5.4.9/wp-content/plugins/all-in-one-wp-s... https://phongtamphuoctien.vn/wp-content/plugins/all-in-one-wp-security-and-firewall/js/remove-weak-pw.js?ver=5.4.9 — 403 — 21 B — 575 ms — h2https://unpkg.com/aos@2.3.4/dist/aos.jsunpkg.com/aos@2.3.4/dist/aos.js https://unpkg.com/aos@2.3.4/dist/aos.js — 200 — 5.0 KiB — 36 ms — h3https://cdn.jsdelivr.net/npm/swiper@11/swiper-bundle.min.js?ver=11.0.0cdn.jsdelivr.net/npm/swiper@11/swip... https://cdn.jsdelivr.net/npm/swiper@11/swiper-bundle.min.js?ver=11.0.0 — 200 — 43.4 KiB — 35 ms — h2https://phongtamphuoctien.vn/wp-content/themes/az9s-page/assets/main.js?ver=1782785960/wp-content/themes/az9s-page/assets... https://phongtamphuoctien.vn/wp-content/themes/az9s-page/assets/main.js?ver=1782785960 — 403 — 21 B — 570 ms — h2https://phongtamphuoctien.vn/wp-content/themes/az9s-page/assets/banner-slider.js?ver=1782785960/wp-content/themes/az9s-page/assets... https://phongtamphuoctien.vn/wp-content/themes/az9s-page/assets/banner-slider.js?ver=1782785960 — 403 — 21 B — 579 ms — h2
0 ms 1.0 s 2.0 s 3.0 s FCP 2.9 s LCP 3.3 shttps://phongtamphuoctien.vn// https://phongtamphuoctien.vn/ — 200 — 25.8 KiB — 1.1 s — h2https://phongtamphuoctien.vn/wp-content/themes/az9s-page/fonts/FORDANTENNAWGL-REGULAR.OTF/wp-content/themes/az9s-page/fonts/... https://phongtamphuoctien.vn/wp-content/themes/az9s-page/fonts/FORDANTENNAWGL-REGULAR.OTF — 403 — 21 B — 529 ms — h2https://phongtamphuoctien.vn/wp-content/themes/az9s-page/fonts/FORDANTENNAWGL-SEMIBOLD.OTF/wp-content/themes/az9s-page/fonts/... https://phongtamphuoctien.vn/wp-content/themes/az9s-page/fonts/FORDANTENNAWGL-SEMIBOLD.OTF — 403 — 21 B — 528 ms — h2https://phongtamphuoctien.vn/wp-content/plugins/woocommerce/assets/client/blocks/wc-blocks.css?ver=wc-10.9.4/wp-content/plugins/woocommerce/ass... https://phongtamphuoctien.vn/wp-content/plugins/woocommerce/assets/client/blocks/wc-blocks.css?ver=wc-10.9.4 — 403 — 21 B — 344 ms — 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200 — 19.1 KiB — 106 ms — h3https://unpkg.com/aos@2.3.4/dist/aos.cssunpkg.com/aos@2.3.4/dist/aos.css https://unpkg.com/aos@2.3.4/dist/aos.css — 200 — 2.6 KiB — 79 ms — h3https://phongtamphuoctien.vn/wp-includes/js/jquery/jquery.min.js?ver=3.7.1/wp-includes/js/jquery/jquery.min.j... https://phongtamphuoctien.vn/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 — 403 — 21 B — 338 ms — h2https://phongtamphuoctien.vn/wp-includes/js/jquery/jquery-migrate.min.js?ver=3.4.1/wp-includes/js/jquery/jquery-migra... https://phongtamphuoctien.vn/wp-includes/js/jquery/jquery-migrate.min.js?ver=3.4.1 — 403 — 21 B — 323 ms — h2https://phongtamphuoctien.vn/wp-content/uploads/2022/04/logo-phong-tam-phuoc-tien.png/wp-content/uploads/2022/04/logo-ph... https://phongtamphuoctien.vn/wp-content/uploads/2022/04/logo-phong-tam-phuoc-tien.png — 403 — 1.2 KiB — 325 ms — h2https://phongtamphuoctien.vn/wp-content/plugins/smart-contact-floating/assets/icons/zalo.png/wp-content/plugins/smart-contact-f... 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43.4 KiB — 35 ms — h2https://phongtamphuoctien.vn/wp-content/themes/az9s-page/assets/main.js?ver=1782785960/wp-content/themes/az9s-page/assets... https://phongtamphuoctien.vn/wp-content/themes/az9s-page/assets/main.js?ver=1782785960 — 403 — 21 B — 570 ms — h2https://phongtamphuoctien.vn/wp-content/themes/az9s-page/assets/banner-slider.js?ver=1782785960/wp-content/themes/az9s-page/assets... https://phongtamphuoctien.vn/wp-content/themes/az9s-page/assets/banner-slider.js?ver=1782785960 — 403 — 21 B — 579 ms — h2https://phongtamphuoctien.vn/wp-content/plugins/woocommerce/assets/js/sourcebuster/sourcebuster.min.js?ver=10.9.4/wp-content/plugins/woocommerce/ass... https://phongtamphuoctien.vn/wp-content/plugins/woocommerce/assets/js/sourcebuster/sourcebuster.min.js?ver=10.9.4 — 403 — 21 B — 571 ms — h2https://phongtamphuoctien.vn/wp-content/plugins/woocommerce/assets/js/frontend/order-attribution.min.js?ver=10.9.4/wp-content/plugins/woocommerce/ass... 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