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Performance

· 22 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
78
GRADE
C
FIX
5
REVIEW
6
PASS
8
INFO
3

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

Mobile Desktop
46
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
77
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
92
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
67
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.

9.09 s

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

9.41 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.

0.186

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

20.16 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.

9.41 s

Page Load Progression

1.4 s
2.7 s
4.1 s
5.5 s
6.8 s
8.2 s
9.6 s
10.9 s
Checks
22
8 PASS 6 REVIEW 5 FIX
F
Page Weight Budget
Action
95.7 MB transferred, 135 requests
FIX
95.7 MB transferred, 135 requests
Critical::
Page weighs 132.8 MB (95.7 MB transferred)
Warning::
Images are 84.7 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 84.7 MB
Warning::
JavaScript is 10.5 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 10.5 MB
Warning::
135 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 20.1 g CO2 per page load
95.7 MB / 2.4 MB budget
95.7 MB transferred
135 requests
20.1 g CO2 per page load
Images 84.7 MiB 88%
JavaScript 10.5 MiB 11%
HTML 243.9 KiB 0%
Other 140.8 KiB 0%
CSS 81.5 KiB 0%
Other 35.9 KiB 0%
Fonts 33.9 KiB 0%
Other 151 B 0%
Other 0 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

Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.

Why this matters

High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.

Source: web.dev

D
JS Execution Cost
Action
2942ms total JS execution
FIX
2942ms total JS execution
Warning::
https://www.pdn.ac.lk/: 1041ms CPU time
Warning::
Unattributable: 1012ms CPU time
Warning::
https://www.pdn.ac.lk/assets/index-BpTvxTJs.js: 888ms CPU time

Main Thread Breakdown

Other 70% Style & Layout 10% Script Evaluation 10% Rendering 8%
ScriptTotalScriptingParse/CompileParty
https://www.pdn.ac.lk/1041ms30ms0ms1st
Unattributable1012ms4ms0ms1st
https://www.pdn.ac.lk/assets/index-BpTvxTJs.js888ms223ms25ms1st
F
JS Bundles
Action
24 scripts, 9.3 MB unused
FIX
24 scripts, 9.3 MB unused
Warning::
https://www.pdn.ac.lk/assets/index-BpTvxTJs.js: 9.2 MB unused (96%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://translate.googleapis.com/_/translate_http/...: 53 KB unused (58%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 9.3 MB
9485 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.pdn.ac.lk/assets/index-BpTvxTJs.js9791 KB9432 KB (96%)✓1st
https://translate.googleapis.com/_/translate_http/_/js/k=translate_http.tr.es.RNAW9s8xbEk.O/am=BECAAQ/d=1/ed=1/rs=AN8SPfp8W-QFvT0XZOf28k_7uaeN3aPU_Q/m=el_main92 KB53 KB (58%)✓3rd
https://static.doubleclick.net/instream/ad_status.js0 KB—✓3rd
https://www.youtube.com/s/_/ytembeds/_/js/k=ytembeds.base.en_US.VqIvYKkXsLY.2021.O/ck=ytembeds.base.YwsQU3S55Qk.L.W.O/am=AAAAQA/d=1/exm=base,root/excm=base,root/ed=1/br=1/rs=AGKMywE2xM800vUO4wHO0req7-O17CJyoQ/m=r78Drb237 KB—✓3rd
https://www.youtube.com/s/_/ytembeds/_/js/k=ytembeds.base.en_US.VqIvYKkXsLY.2021.O/am=AAAAQA/d=1/excm=base,root/br=1/rs=AGKMywGrspruSnqByTyKB6rWKUKeLUg5gQ/m=root,base155 KB—✓3rd
https://www.youtube.com/s/player/2574220e/player_embed_es6.vflset/en_US/base.js467 KB—✓3rd
https://www.youtube.com/s/_/ytembeds/_/js/k=ytembeds.base.en_US.VqIvYKkXsLY.2021.O/am=AAAAQA/d=1/excm=base,root/br=1/rs=AGKMywGrspruSnqByTyKB6rWKUKeLUg5gQ/m=root,base0 KB—✓3rd
https://www.youtube.com/s/player/2574220e/player_embed_es6.vflset/en_US/base.js0 KB—✓3rd
https://www.youtube.com/s/_/ytembeds/_/js/k=ytembeds.base.en_US.VqIvYKkXsLY.2021.O/am=AAAAQA/d=1/excm=base,root/br=1/rs=AGKMywGrspruSnqByTyKB6rWKUKeLUg5gQ/m=root,base0 KB—✓3rd
https://www.youtube.com/s/player/2574220e/player_embed_es6.vflset/en_US/base.js0 KB—✓3rd

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

F
Page Weight Inventory
Action
135 resources · 95.7 MB · 9.3 MB savings available
FIX
135 resources · 95.7 MB · 9.3 MB savings available
Warning::
Page weight 95.7 MB exceeds 1 MB target by 94.7 MB
Got: 95.7 MB Expected: ≤ 1 MB
Info::
~9.3 MB of savings available
Info::
74 third-party resources (1% of weight)
Info::
35 resources over 200KB
135 resources · 95.7 MiB · 74 third-party 94.7 MiB over 1MB target
Image 89% · 84.8 MiB
JavaScript 11% · 10.5 MiB
Document 0% · 243.9 KiB
CSS 0% · 81.5 KiB
Other 0% · 36.1 KiB
Font 0% · 33.9 KiB

~9.3 MiB of savings available

Remove unused JavaScript: 9.3 MiB
D
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.
Info::
ETag present — enables conditional (304) responses
Info::
Last-Modified header present

No Cache-Control header

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

C
Image Optimization
Action
61 images, 0 KB saveable
REVIEW
61 images, 0 KB saveable
Warning::
https://www.pdn.ac.lk/dashboard/function/uploads/W... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.pdn.ac.lk/assets/logo-Dx2RUCSi.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.pdn.ac.lk/assets/uoplogo-DRtZaWAf.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.pdn.ac.lk/assets/text-5AOTzhFK.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
61 images 84.7 MB
0 oversized -0 KB
60 legacy format
4 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

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
Compression Algorithm
Main response uses gzip; brotli would be ~20% smaller
REVIEW
Main response uses gzip; brotli would be ~20% smaller
Info::
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.
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+
Third-Party Impact
1% third-party, 0 ms blocking
PASS
1% third-party, 0 ms blocking
Info::
Third-party code accounts for 1% of page weight (1.3 MiB of 95.7 MiB)
Info::
Third-party blocking time is low (0 ms)
99%
First-party Third-party
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
4 fonts (34 KB)
PASS
4 fonts (34 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

34 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 5.0 s 6.0 s 7.0 s 8.0 s 9.0 s FCP 9.1 s LCP 9.4 shttps://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 33.9 KiB — 72 ms — font-display: swaphttps://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 0 B — 43 ms — font-display: swaphttps://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 0 B — 0 ms — font-display: swaphttps://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 0 B — 0 ms — font-display: swap
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 34 KB
Load time 72 ms
Start 4.6 s
Risk FOUT — text flashes from fallback to web font
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 0 KB
Load time 43 ms
Start 4.6 s
Risk FOUT — text flashes from fallback to web font
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 0 KB
Load time 0 ms
Start 4.7 s
Risk FOUT — text flashes from fallback to web font
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 0 KB
Load time 0 ms
Start 4.8 s
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
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+
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::
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).
Network Waterfall
135 requests over 10829ms
INFO
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s FCP 9.1 s LCP 9.4 shttps://www.pdn.ac.lk// https://www.pdn.ac.lk/ — 200 — 974 B — 487 ms — http/1.1https://translate.google.com/translate_a/element.js?cb=googleTranslateElementInittranslate.google.com/translate_a/el... https://translate.google.com/translate_a/element.js?cb=googleTranslateElementInit — 200 — 1.4 KiB — 83 ms — h2https://www.pdn.ac.lk/assets/index-BpTvxTJs.js/assets/index-BpTvxTJs.js https://www.pdn.ac.lk/assets/index-BpTvxTJs.js — 200 — 9.6 MiB — 2.6 s — http/1.1https://www.pdn.ac.lk/assets/index-Mijw4ZQf.css/assets/index-Mijw4ZQf.css https://www.pdn.ac.lk/assets/index-Mijw4ZQf.css — 200 — 19.8 KiB — 822 ms — http/1.1https://www.gstatic.com/_/translate_http/_/ss/k=translate_http.tr.zZZZhVqDDCw.L.W.O/am=BECAAQ/d=0/rs=AN8SPfreld5KM52lJgLi44qeAC03eRorPQ/m=el_main_csswww.gstatic.com/_/translate_http/_/... https://www.gstatic.com/_/translate_http/_/ss/k=translate_http.tr.zZZZhVqDDCw.L.W.O/am=BECAAQ/d=0/rs=AN8SPfreld5KM52lJgLi44qeAC03eRorPQ/m=el_main_css — 200 — 4.6 KiB — 71 ms — h2https://translate.googleapis.com/_/translate_http/_/js/k=translate_http.tr.es.RNAW9s8xbEk.O/am=BECAAQ/d=1/ed=1/rs=AN8SPfp8W-QFvT0XZOf28k_7uaeN3aPU_Q/m=el_maintranslate.googleapis.com/_/translat... https://translate.googleapis.com/_/translate_http/_/js/k=translate_http.tr.es.RNAW9s8xbEk.O/am=BECAAQ/d=1/ed=1/rs=AN8SPfp8W-QFvT0XZOf28k_7uaeN3aPU_Q/m=el_main — 200 — 91.6 KiB — 118 ms — h2https://fonts.gstatic.com/s/i/productlogos/translate/v14/24px.svgfonts.gstatic.com/s/i/productlogos/... https://fonts.gstatic.com/s/i/productlogos/translate/v14/24px.svg — 200 — 3.3 KiB — 52 ms — h3https://www.gstatic.com/images/branding/product/2x/translate_24dp.pngwww.gstatic.com/images/branding/pro... https://www.gstatic.com/images/branding/product/2x/translate_24dp.png — 200 — 2.1 KiB — 26 ms — h2https://translate-pa.googleapis.com/v1/supportedLanguages?client=te&display_language=es&key=AIzaSyBWDj0QJvVIx8XOhRegXX5_SrRWxhT5Hs4&callback=callbacktranslate-pa.googleapis.com/v1/supp... https://translate-pa.googleapis.com/v1/supportedLanguages?client=te&display_language=es&key=AIzaSyBWDj0QJvVIx8XOhRegXX5_SrRWxhT5Hs4&callback=callback — 200 — 3.2 KiB — 79 ms — h2https://www.pdn.ac.lk/assets/logo-Dx2RUCSi.png/assets/logo-Dx2RUCSi.png https://www.pdn.ac.lk/assets/logo-Dx2RUCSi.png — 200 — 140.7 KiB — 166 ms — http/1.1https://www.pdn.ac.lk/assets/text-5AOTzhFK.png/assets/text-5AOTzhFK.png https://www.pdn.ac.lk/assets/text-5AOTzhFK.png — 200 — 69.5 KiB — 483 ms — http/1.1https://www.pdn.ac.lk/assets/uoplogo-DRtZaWAf.png/assets/uoplogo-DRtZaWAf.png https://www.pdn.ac.lk/assets/uoplogo-DRtZaWAf.png — 200 — 68.5 KiB — 1.2 s — http/1.1data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/…www.w3.org/2000/… data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/… — 200 — 0 B — 0 ms — datahttps://www.pdn.ac.lk/assets/external-BYXKn1n_.jpg/assets/external-BYXKn1n_.jpg https://www.pdn.ac.lk/assets/external-BYXKn1n_.jpg — 200 — 7.7 MiB — 2.5 s — http/1.1https://www.pdn.ac.lk/assets/diploma4-BwgS0Lma.png/assets/diploma4-BwgS0Lma.png https://www.pdn.ac.lk/assets/diploma4-BwgS0Lma.png — 200 — 847.4 KiB — 1.4 s — http/1.1https://www.pdn.ac.lk/assets/cert4-CuanwzNS.jpg/assets/cert4-CuanwzNS.jpg https://www.pdn.ac.lk/assets/cert4-CuanwzNS.jpg — 200 — 149.0 KiB — 1.5 s — http/1.1https://www.pdn.ac.lk/dashboard/function/homeimge.php?action=getallImages/dashboard/function/homeimge.php?ac... https://www.pdn.ac.lk/dashboard/function/homeimge.php?action=getallImages — 200 — 1.8 KiB — 278 ms — http/1.1https://www.pdn.ac.lk/dashboard/function/event.php?action=getallEvents/dashboard/function/event.php?actio... https://www.pdn.ac.lk/dashboard/function/event.php?action=getallEvents — 200 — 16.2 KiB — 591 ms — http/1.1https://www.pdn.ac.lk/dashboard/function/programsilder.php?action=getallImages/dashboard/function/programsilder.p... https://www.pdn.ac.lk/dashboard/function/programsilder.php?action=getallImages — 200 — 5.2 KiB — 439 ms — http/1.1https://www.pdn.ac.lk/dashboard/function/research.php?action=getResearch/dashboard/function/research.php?ac... https://www.pdn.ac.lk/dashboard/function/research.php?action=getResearch — 200 — 3.2 KiB — 591 ms — http/1.1https://www.pdn.ac.lk/dashboard/function/research.php?action=getResearchHeightlight/dashboard/function/research.php?ac... https://www.pdn.ac.lk/dashboard/function/research.php?action=getResearchHeightlight — 200 — 2.1 KiB — 601 ms — http/1.1https://api.countapi.xyz/hit/www.pdn.ac.lk/visitorsapi.countapi.xyz/hit/www.pdn.ac.lk/... https://api.countapi.xyz/hit/www.pdn.ac.lk/visitors — -1 — 0 B — 73 ms — https://www.pdn.ac.lk/dashboard/function/video.php?action=getallvideos/dashboard/function/video.php?actio... https://www.pdn.ac.lk/dashboard/function/video.php?action=getallvideos — 200 — 5.0 KiB — 753 ms — http/1.1https://www.pdn.ac.lk/dashboard/function/statistics.php?action=getStatistics/dashboard/function/statistics.php?... https://www.pdn.ac.lk/dashboard/function/statistics.php?action=getStatistics — 200 — 914 B — 752 ms — http/1.1https://www.pdn.ac.lk/logouop.png/logouop.png https://www.pdn.ac.lk/logouop.png — 200 — 140.7 KiB — 746 ms — http/1.1https://www.pdn.ac.lk/dashboard/function/uploads/Arts.jpg/dashboard/function/uploads/Arts.jp... https://www.pdn.ac.lk/dashboard/function/uploads/Arts.jpg — 200 — 189.0 KiB — 791 ms — http/1.1https://www.pdn.ac.lk/dashboard/function/uploads/Tennis_Team.jpg/dashboard/function/uploads/Tennis_... https://www.pdn.ac.lk/dashboard/function/uploads/Tennis_Team.jpg — 200 — 160.5 KiB — 948 ms — http/1.1https://www.pdn.ac.lk/dashboard/function/uploads/Web.jpg/dashboard/function/uploads/Web.jpg https://www.pdn.ac.lk/dashboard/function/uploads/Web.jpg — 200 — 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h3https://www.pdn.ac.lk/assets/eng-WIYWjtli.jpg/assets/eng-WIYWjtli.jpg https://www.pdn.ac.lk/assets/eng-WIYWjtli.jpg — 200 — 3.6 MiB — 970 ms — http/1.1https://googleads.g.doubleclick.net/pagead/idgoogleads.g.doubleclick.net/pagead/... https://googleads.g.doubleclick.net/pagead/id — 302 — 23 B — 235 ms — h3https://static.doubleclick.net/instream/ad_status.jsstatic.doubleclick.net/instream/ad_... https://static.doubleclick.net/instream/ad_status.js — 200 — 0 B — 2 ms — h2https://www.youtube.com/s/_/ytembeds/_/js/k=ytembeds.base.en_US.VqIvYKkXsLY.2021.O/ck=ytembeds.base.YwsQU3S55Qk.L.W.O/am=AAAAQA/d=1/exm=base,root/excm=base,root/ed=1/br=1/rs=AGKMywE2xM800vUO4wHO0req7-O17CJyoQ/m=r78Drbwww.youtube.com/s/_/ytembeds/_/js/k... https://www.youtube.com/s/_/ytembeds/_/js/k=ytembeds.base.en_US.VqIvYKkXsLY.2021.O/ck=ytembeds.base.YwsQU3S55Qk.L.W.O/am=AAAAQA/d=1/exm=base,root/excm=base,root/ed=1/br=1/rs=AGKMywE2xM800vUO4wHO0req7-O17CJyoQ/m=r78Drb — 200 — 0 B — 8 ms — h3https://www.pdn.ac.lk/assets/mgt1-DMw4s-Ze.jpg/assets/mgt1-DMw4s-Ze.jpg https://www.pdn.ac.lk/assets/mgt1-DMw4s-Ze.jpg — 200 — 97.9 KiB — 167 ms — http/1.1https://googleads.g.doubleclick.net/pagead/id?slf_rd=1googleads.g.doubleclick.net/pagead/... https://googleads.g.doubleclick.net/pagead/id?slf_rd=1 — 200 — 146 B — 26 ms — h3https://googleads.g.doubleclick.net/pagead/id?slf_rd=1googleads.g.doubleclick.net/pagead/... https://googleads.g.doubleclick.net/pagead/id?slf_rd=1 — 200 — 146 B — 47 ms — h3https://www.pdn.ac.lk/assets/veternery-lOuZy_gg.png/assets/veternery-lOuZy_gg.png https://www.pdn.ac.lk/assets/veternery-lOuZy_gg.png — 200 — 7.5 MiB — 161 ms — http/1.1https://www.pdn.ac.lk/dashboard/function/uploads/ESS.png/dashboard/function/uploads/ESS.png https://www.pdn.ac.lk/dashboard/function/uploads/ESS.png — 200 — 1.3 MiB — 488 ms — http/1.1https://googleads.g.doubleclick.net/pagead/id?slf_rd=1googleads.g.doubleclick.net/pagead/... https://googleads.g.doubleclick.net/pagead/id?slf_rd=1 — 200 — 146 B — 26 ms — h3https://i.ytimg.com/vi/UvVCRV_cPnw/default.jpgi.ytimg.com/vi/UvVCRV_cPnw/default.... https://i.ytimg.com/vi/UvVCRV_cPnw/default.jpg — 200 — 3.3 KiB — 81 ms — h2https://www.pdn.ac.lk/dashboard/function/uploads/MPH.png/dashboard/function/uploads/MPH.png https://www.pdn.ac.lk/dashboard/function/uploads/MPH.png — 200 — 1.4 MiB — 513 ms — http/1.1https://i.ytimg.com/vi/UqsxpRUJySM/default.jpgi.ytimg.com/vi/UqsxpRUJySM/default.... https://i.ytimg.com/vi/UqsxpRUJySM/default.jpg — 200 — 3.1 KiB — 61 ms — h2https://www.google.com/js/th/JLnL9msYa_UWMZolOOkTjHBljgh_YaIuOcsS5X5it10.jswww.google.com/js/th/JLnL9msYa_UWMZ... https://www.google.com/js/th/JLnL9msYa_UWMZolOOkTjHBljgh_YaIuOcsS5X5it10.js — 200 — 23.7 KiB — 67 ms — h3https://i.ytimg.com/vi/gMf9lW1hJpE/default.jpgi.ytimg.com/vi/gMf9lW1hJpE/default.... https://i.ytimg.com/vi/gMf9lW1hJpE/default.jpg — 200 — 2.8 KiB — 39 ms — h2https://www.google.com/js/th/JLnL9msYa_UWMZolOOkTjHBljgh_YaIuOcsS5X5it10.jswww.google.com/js/th/JLnL9msYa_UWMZ... https://www.google.com/js/th/JLnL9msYa_UWMZolOOkTjHBljgh_YaIuOcsS5X5it10.js — 200 — 0 B — 27 ms — h3https://www.google.com/js/th/JLnL9msYa_UWMZolOOkTjHBljgh_YaIuOcsS5X5it10.jswww.google.com/js/th/JLnL9msYa_UWMZ... https://www.google.com/js/th/JLnL9msYa_UWMZolOOkTjHBljgh_YaIuOcsS5X5it10.js — 200 — 0 B — 20 ms — h3https://i.ytimg.com/vi/YNahHAelNcw/default.jpgi.ytimg.com/vi/YNahHAelNcw/default.... https://i.ytimg.com/vi/YNahHAelNcw/default.jpg — 200 — 2.8 KiB — 44 ms — h3https://www.google.com/js/th/JLnL9msYa_UWMZolOOkTjHBljgh_YaIuOcsS5X5it10.jswww.google.com/js/th/JLnL9msYa_UWMZ... https://www.google.com/js/th/JLnL9msYa_UWMZolOOkTjHBljgh_YaIuOcsS5X5it10.js — 200 — 0 B — 2 ms — h3https://www.pdn.ac.lk/dashboard/function/uploads/Flyer_DMD_25.jpg/dashboard/function/uploads/Flyer_D... https://www.pdn.ac.lk/dashboard/function/uploads/Flyer_DMD_25.jpg — 200 — 15.8 MiB — 2.7 s — http/1.1https://www.pdn.ac.lk/dashboard/function/uploads/English.png/dashboard/function/uploads/English... https://www.pdn.ac.lk/dashboard/function/uploads/English.png — 200 — 1.6 MiB — 485 ms — http/1.1https://www.youtube.com/generate_204?velAqQwww.youtube.com/generate_204?velAqQ https://www.youtube.com/generate_204?velAqQ — 204 — 10 B — 18 ms — h3https://www.youtube.com/generate_204?C59K6Qwww.youtube.com/generate_204?C59K6Q https://www.youtube.com/generate_204?C59K6Q — 204 — 10 B — 21 ms — h3https://www.youtube.com/generate_204?cpYjDwwww.youtube.com/generate_204?cpYjDw https://www.youtube.com/generate_204?cpYjDw — 204 — 10 B — 19 ms — h3https://www.youtube.com/generate_204?MxMZ5Qwww.youtube.com/generate_204?MxMZ5Q https://www.youtube.com/generate_204?MxMZ5Q — 204 — 10 B — 24 ms — h3https://www.pdn.ac.lk/dashboard/function/uploads/eccpd_1.jpg/dashboard/function/uploads/eccpd_1... https://www.pdn.ac.lk/dashboard/function/uploads/eccpd_1.jpg — 200 — 461.4 KiB — 178 ms — http/1.1https://jnn-pa.googleapis.com/$rpc/google.internal.waa.v1.Waa/GenerateITjnn-pa.googleapis.com/$rpc/google.i... https://jnn-pa.googleapis.com/$rpc/google.internal.waa.v1.Waa/GenerateIT — 200 — 0 B — 75 ms — h2https://jnn-pa.googleapis.com/$rpc/google.internal.waa.v1.Waa/GenerateITjnn-pa.googleapis.com/$rpc/google.i... https://jnn-pa.googleapis.com/$rpc/google.internal.waa.v1.Waa/GenerateIT — 200 — 0 B — 41 ms — h2https://jnn-pa.googleapis.com/$rpc/google.internal.waa.v1.Waa/GenerateITjnn-pa.googleapis.com/$rpc/google.i... https://jnn-pa.googleapis.com/$rpc/google.internal.waa.v1.Waa/GenerateIT — 200 — 0 B — 29 ms — h2https://jnn-pa.googleapis.com/$rpc/google.internal.waa.v1.Waa/GenerateITjnn-pa.googleapis.com/$rpc/google.i... https://jnn-pa.googleapis.com/$rpc/google.internal.waa.v1.Waa/GenerateIT — 200 — 0 B — 25 ms — h2https://jnn-pa.googleapis.com/$rpc/google.internal.waa.v1.Waa/GenerateITjnn-pa.googleapis.com/$rpc/google.i... https://jnn-pa.googleapis.com/$rpc/google.internal.waa.v1.Waa/GenerateIT — 200 — 189 B — 37 ms — h2https://jnn-pa.googleapis.com/$rpc/google.internal.waa.v1.Waa/GenerateITjnn-pa.googleapis.com/$rpc/google.i... https://jnn-pa.googleapis.com/$rpc/google.internal.waa.v1.Waa/GenerateIT — 200 — 312 B — 31 ms — h2https://jnn-pa.googleapis.com/$rpc/google.internal.waa.v1.Waa/GenerateITjnn-pa.googleapis.com/$rpc/google.i... https://jnn-pa.googleapis.com/$rpc/google.internal.waa.v1.Waa/GenerateIT — 200 — 189 B — 33 ms — h2https://www.pdn.ac.lk/dashboard/function/uploads/ICPC.png/dashboard/function/uploads/ICPC.pn... https://www.pdn.ac.lk/dashboard/function/uploads/ICPC.png — 200 — 1.3 MiB — 337 ms — http/1.1https://jnn-pa.googleapis.com/$rpc/google.internal.waa.v1.Waa/GenerateITjnn-pa.googleapis.com/$rpc/google.i... https://jnn-pa.googleapis.com/$rpc/google.internal.waa.v1.Waa/GenerateIT — 200 — 189 B — 28 ms — h2https://www.pdn.ac.lk/dashboard/function/uploads/L1.jpg/dashboard/function/uploads/L1.jpg https://www.pdn.ac.lk/dashboard/function/uploads/L1.jpg — 200 — 532.1 KiB — 174 ms — http/1.1https://www.pdn.ac.lk/dashboard/function/uploads/dissaster.jpg/dashboard/function/uploads/dissast... https://www.pdn.ac.lk/dashboard/function/uploads/dissaster.jpg — 200 — 49.1 KiB — 164 ms — http/1.1https://www.pdn.ac.lk/dashboard/function/uploads/594960961_1451339403659959_5722347950439677372_n.jpg/dashboard/function/uploads/5949609... https://www.pdn.ac.lk/dashboard/function/uploads/594960961_1451339403659959_5722347950439677372_n.jpg — 200 — 70.5 KiB — 163 ms — http/1.1https://www.pdn.ac.lk/dashboard/function/uploads/615202030_1378061250687330_8981202786554892682_n.jpg/dashboard/function/uploads/6152020... https://www.pdn.ac.lk/dashboard/function/uploads/615202030_1378061250687330_8981202786554892682_n.jpg — 200 — 401.5 KiB — 324 ms — http/1.1https://www.pdn.ac.lk/dashboard/function/uploads/609065966_1293749152789478_7093898120288112552_n.jpg/dashboard/function/uploads/6090659... https://www.pdn.ac.lk/dashboard/function/uploads/609065966_1293749152789478_7093898120288112552_n.jpg — 200 — 583.5 KiB — 1.3 s — http/1.1https://www.pdn.ac.lk/dashboard/function/uploads/adv_2627.png/dashboard/function/uploads/adv_262... https://www.pdn.ac.lk/dashboard/function/uploads/adv_2627.png — 200 — 726.6 KiB — 182 ms — http/1.1https://www.pdn.ac.lk/dashboard/function/uploads/pera_msc_first.jpg/dashboard/function/uploads/pera_ms... https://www.pdn.ac.lk/dashboard/function/uploads/pera_msc_first.jpg — 200 — 919.4 KiB — 487 ms — http/1.1https://www.pdn.ac.lk/dashboard/function/uploads/ad_2026.jpeg/dashboard/function/uploads/ad_2026... https://www.pdn.ac.lk/dashboard/function/uploads/ad_2026.jpeg — 200 — 233.3 KiB — 166 ms — http/1.1https://www.pdn.ac.lk/dashboard/function/uploads/602936563_1313593504138376_7573997086080335972_n.jpg/dashboard/function/uploads/6029365... https://www.pdn.ac.lk/dashboard/function/uploads/602936563_1313593504138376_7573997086080335972_n.jpg — 200 — 540.8 KiB — 179 ms — http/1.1https://www.pdn.ac.lk/dashboard/function/uploads/LH-advertisement.png/dashboard/function/uploads/LH-adve... https://www.pdn.ac.lk/dashboard/function/uploads/LH-advertisement.png — 200 — 1.9 MiB — 514 ms — http/1.1https://www.pdn.ac.lk/dashboard/function/uploads/course-1786097871756-309055806.jpg/dashboard/function/uploads/course-... https://www.pdn.ac.lk/dashboard/function/uploads/course-1786097871756-309055806.jpg — 200 — 1.0 MiB — 490 ms — http/1.1https://www.pdn.ac.lk/dashboard/function/uploads/NCPA.jpg/dashboard/function/uploads/NCPA.jp... https://www.pdn.ac.lk/dashboard/function/uploads/NCPA.jpg — 200 — 45.3 KiB — 165 ms — http/1.1https://www.pdn.ac.lk/dashboard/function/uploads/IMG-20260611-WA0010.jpg/dashboard/function/uploads/IMG-202... https://www.pdn.ac.lk/dashboard/function/uploads/IMG-20260611-WA0010.jpg — 200 — 401.3 KiB — 322 ms — http/1.1https://www.pdn.ac.lk/dashboard/function/uploads/flyer_page-0001.jpg/dashboard/function/uploads/flyer_p... https://www.pdn.ac.lk/dashboard/function/uploads/flyer_page-0001.jpg — 200 — 1.2 MiB — 337 ms — http/1.1https://www.pdn.ac.lk/dashboard/function/uploads/11.png/dashboard/function/uploads/11.png https://www.pdn.ac.lk/dashboard/function/uploads/11.png — 200 — 1.8 MiB — 336 ms — http/1.1https://www.pdn.ac.lk/dashboard/function/uploads/OpenDayFlyer_2026_PPD.jpg/dashboard/function/uploads/OpenDay... https://www.pdn.ac.lk/dashboard/function/uploads/OpenDayFlyer_2026_PPD.jpg — 200 — 576.6 KiB — 326 ms — http/1.1https://www.pdn.ac.lk/dashboard/function/uploads/Workplace_safety.jpg/dashboard/function/uploads/Workpla... https://www.pdn.ac.lk/dashboard/function/uploads/Workplace_safety.jpg — 200 — 131.2 KiB — 165 ms — http/1.1https://www.youtube.com/youtubei/v1/log_event?alt=jsonwww.youtube.com/youtubei/v1/log_eve... https://www.youtube.com/youtubei/v1/log_event?alt=json — 200 — 50 B — 45 ms — h3https://www.youtube.com/youtubei/v1/log_event?alt=jsonwww.youtube.com/youtubei/v1/log_eve... https://www.youtube.com/youtubei/v1/log_event?alt=json — 200 — 50 B — 39 ms — h3https://www.youtube.com/youtubei/v1/log_event?alt=jsonwww.youtube.com/youtubei/v1/log_eve... https://www.youtube.com/youtubei/v1/log_event?alt=json — 200 — 50 B — 37 ms — h3https://www.youtube.com/youtubei/v1/log_event?alt=jsonwww.youtube.com/youtubei/v1/log_eve... https://www.youtube.com/youtubei/v1/log_event?alt=json — 200 — 50 B — 32 ms — h3https://www.pdn.ac.lk/dashboard/function/uploads/R1.jpg/dashboard/function/uploads/R1.jpg https://www.pdn.ac.lk/dashboard/function/uploads/R1.jpg — 200 — 27.4 KiB — 163 ms — http/1.1https://www.pdn.ac.lk/dashboard/function/uploads/Research2.jpg/dashboard/function/uploads/Researc... https://www.pdn.ac.lk/dashboard/function/uploads/Research2.jpg — 200 — 63.2 KiB — 163 ms — http/1.1https://www.pdn.ac.lk/dashboard/function/uploads/flement.png/dashboard/function/uploads/flement... https://www.pdn.ac.lk/dashboard/function/uploads/flement.png — 200 — 138.9 KiB — 165 ms — http/1.1https://www.pdn.ac.lk/dashboard/function/uploads/r2.jpg/dashboard/function/uploads/r2.jpg https://www.pdn.ac.lk/dashboard/function/uploads/r2.jpg — 200 — 44.1 KiB — 162 ms — http/1.1https://www.pdn.ac.lk/dashboard/function/uploads/r3.jpg/dashboard/function/uploads/r3.jpg https://www.pdn.ac.lk/dashboard/function/uploads/r3.jpg — 200 — 67.8 KiB — 163 ms — http/1.1https://translate.googleapis.com/element/log?format=json&hasfast=true&authuser=0translate.googleapis.com/element/lo... https://translate.googleapis.com/element/log?format=json&hasfast=true&authuser=0 — 200 — 0 B — 68 ms — h3https://translate.googleapis.com/element/log?format=json&hasfast=true&authuser=0translate.googleapis.com/element/lo... https://translate.googleapis.com/element/log?format=json&hasfast=true&authuser=0 — 200 — 151 B — 26 ms — h3
HTML JavaScript CSS Images Fonts XHR/Fetch Other
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 (2026-07-24 — 2026-08-20)

LCP (p75)

7796 ms

41% good

INP (p75)

163 ms

80% good

CLS (p75)

0.180

59% good

FCP (p75)

8114 ms

TTFB (p75)

882 ms

Image Optimization
34 images, 14779 KB total, 10511 KB wasted
INFO

Image Optimization Audit

Total Images

34

Total Size

14779 KB

Oversized

17

Wasted

10511 KB

33 missing dimensions 27 missing lazy loading
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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