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Performance

· 22 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
87
GRADE
B
FIX
2
REVIEW
4
PASS
13
INFO
3

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

Mobile Desktop
90
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
92
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
91
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.

1.43 s

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

1.43 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

15 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.

1.43 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.

1.48 s

Page Load Progression

464 ms
928 ms
1.4 s
1.9 s
2.3 s
2.8 s
3.2 s
3.7 s
Checks
22
13 PASS 4 REVIEW 2 FIX
D
Third-Party Impact
Action
85% third-party, 0 ms blocking
FIX
85% third-party, 0 ms blocking
Warning::
Third-party code accounts for 85% of page weight (699.1 KiB of 817.6 KiB)
Info::
Third-party blocking time is low (0 ms)
85%
First-party Third-party
D
JS Bundles
Action
6 scripts, 208 KB unused
FIX
6 scripts, 208 KB unused
Warning::
https://cdn.jsdelivr.net/npm/xlsx@0.18.5/dist/xlsx...: 115 KB unused (59%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdnjs.cloudflare.com/ajax/libs/pdf.js/3.11...: 66 KB unused (91%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://arefan.iranserver-ai.ir/app.js?v=11.0.0: 28 KB unused (83%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://arefan.iranserver-ai.ir/app.js?v=11.0.0: unminified — 7 KB could be saved
Info::
Total unused JavaScript: 208 KB
208 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://cdn.jsdelivr.net/npm/xlsx@0.18.5/dist/xlsx.full.min.js270 KB115 KB (59%)✓3rd
https://cdnjs.cloudflare.com/ajax/libs/pdf.js/3.11.174/pdf.min.js73 KB66 KB (91%)✓3rd
https://arefan.iranserver-ai.ir/app.js?v=11.0.035 KB28 KB (83%)✗1st
https://cdnjs.cloudflare.com/ajax/libs/qrcodejs/1.0.0/qrcode.min.js7 KB—✓3rd
https://cdn.tailwindcss.com/3.4.17124 KB—✓3rd
https://arefan.iranserver-ai.ir/nlpWorker.js0 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

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

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.
B
Page Weight Inventory
23 resources · 818 KB · 208 KB savings available
REVIEW
23 resources · 818 KB · 208 KB savings available
Info::
Within 1MB page-weight target
Got: 818 KB
Info::
~208 KB of savings available
Warning::
12 third-party resources (85% of weight)
Info::
1 resources over 200KB
23 resources · 817.6 KiB · 12 third-party Within 1MB page-weight target
JavaScript 62% · 509.1 KiB
Font 27% · 223.9 KiB
Image 6% · 46.9 KiB
Document 4% · 28.8 KiB
Other 1% · 7.8 KiB
CSS 0% · 1.2 KiB

~207.8 KiB of savings available

Remove unused JavaScript: 207.8 KiB
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

B
HTTP Caching
no-cache, must-revalidate, max-age=0
REVIEW
no-cache, must-revalidate, max-age=0
Info::
Cache-Control header is set
Got: no-cache, must-revalidate, max-age=0
Info::
Last-Modified header present
Cache-Control

no-cache, must-revalidate, max-age=0

DirectiveValueMeaning
no-cache—Cache but always revalidate first
must-revalidate—Must recheck with server after expiry
max-age0Cache for 0 seconds
A
Page Weight Budget
818 KB transferred, 23 requests
PASS
818 KB transferred, 23 requests
Info::
Page weighs 2.3 MB (818 KB transferred)
Warning::
JavaScript is 509 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 509 KB
Info::
Fonts are 224 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 224 KB
Info::
23 HTTP requests
Info::
Estimated 0.17 g CO2 per page load
818 KB / 2.4 MB budget
818 KB transferred
23 requests
0.17 g CO2 per page load
JavaScript 509.1 KiB 62%
Fonts 223.9 KiB 27%
Images 46.9 KiB 6%
HTML 28.8 KiB 4%
Other 4.8 KiB 1%
Other 2.6 KiB 0%
CSS 1.2 KiB 0%
Other 472 B 0%
0 2.4 MB 4.9 MB
Under budget

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

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
1 images, 0 KB saveable
PASS
1 images, 0 KB saveable
Info::
All images are well-optimized
1 images 47 KB
0 oversized -0 KB
1 legacy format
0 missing dimensions CLS risk
A+
JS Execution Cost
430ms total JS execution
PASS
430ms total JS execution
Info::
https://arefan.iranserver-ai.ir/: 208ms CPU time
Info::
https://cdnjs.cloudflare.com/ajax/libs/pdf.js/3.11...: 85ms CPU time
Info::
Unattributable: 72ms CPU time
Info::
https://cdn.jsdelivr.net/npm/xlsx@0.18.5/dist/xlsx...: 65ms CPU time
Info::
Third-party scripts: 150ms (35% of total)

Main Thread Breakdown

Script Evaluation 54% Other 17% Style & Layout 13% Script Parsing & Compilation 7% Garbage Collection 4% Parse HTML & CSS 3%
ScriptTotalScriptingParse/CompileParty
https://arefan.iranserver-ai.ir/208ms89ms1ms1st
https://cdnjs.cloudflare.com/ajax/libs/pdf.js/3.11.174/pdf.min.js85ms78ms6ms3rd
Unattributable72ms3ms0ms1st
https://cdn.jsdelivr.net/npm/xlsx@0.18.5/dist/xlsx.full.min.js65ms47ms18ms3rd
A+
Font Loading
5 fonts (224 KB)
PASS
5 fonts (224 KB)
Info::
5 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

5

224 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 500 ms 1.0 s 1.5 s FCP 1.4 s LCP 1.4 shttps://cdn.jsdelivr.net/gh/rastikerdar/vazirmatn@v33.003/fonts/webfonts/Vazirmatn-Bold.woff2Vazirmatn-Bold.woff2 https://cdn.jsdelivr.net/gh/rastikerdar/vazirmatn@v33.003/fonts/webfonts/Vazirmatn-Bold.woff2 — 50.6 KiB — 69 ms — font-display: swaphttps://cdn.jsdelivr.net/gh/rastikerdar/vazirmatn@v33.003/fonts/webfonts/Vazirmatn-Black.woff2Vazirmatn-Black.woff2 https://cdn.jsdelivr.net/gh/rastikerdar/vazirmatn@v33.003/fonts/webfonts/Vazirmatn-Black.woff2 — 50.1 KiB — 65 ms — font-display: swaphttps://cdn.jsdelivr.net/gh/rastikerdar/vazirmatn@v33.003/fonts/webfonts/Vazirmatn-Regular.woff2Vazirmatn-Regular.woff2 https://cdn.jsdelivr.net/gh/rastikerdar/vazirmatn@v33.003/fonts/webfonts/Vazirmatn-Regular.woff2 — 50.2 KiB — 27 ms — font-display: swaphttps://cdn.jsdelivr.net/gh/rastikerdar/shabnam-font@v5.0.1/dist/Shabnam.woff2Shabnam.woff2 https://cdn.jsdelivr.net/gh/rastikerdar/shabnam-font@v5.0.1/dist/Shabnam.woff2 — 35.6 KiB — 33 ms — font-display: swaphttps://cdn.jsdelivr.net/gh/rastikerdar/shabnam-font@v5.0.1/dist/Shabnam-Bold.woff2Shabnam-Bold.woff2 https://cdn.jsdelivr.net/gh/rastikerdar/shabnam-font@v5.0.1/dist/Shabnam-Bold.woff2 — 37.5 KiB — 32 ms — font-display: swap
Vazirmatn-Bold.woff2 woff2 swap
Size 51 KB
Load time 69 ms
Start 799 ms
Risk FOUT — text flashes from fallback to web font
Vazirmatn-Black.woff2 woff2 swap
Size 50 KB
Load time 65 ms
Start 800 ms
Risk FOUT — text flashes from fallback to web font
Vazirmatn-Regular.woff2 woff2 swap
Size 50 KB
Load time 27 ms
Start 903 ms
Risk FOUT — text flashes from fallback to web font
Shabnam.woff2 woff2 swap
Size 36 KB
Load time 33 ms
Start 948 ms
Risk FOUT — text flashes from fallback to web font
Shabnam-Bold.woff2 woff2 swap
Size 37 KB
Load time 32 ms
Start 948 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+
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+
Document Compression
Document response uses brotli
PASS
Document 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 uses no-cache -- safe revalidate-on-request policy
PASS
Main HTML uses no-cache -- safe revalidate-on-request policy
Info::
Main HTML uses no-cache -- safe revalidate-on-request policy
Got: no-cache, must-revalidate, max-age=0
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::
`Last-Modified` present -- timestamp-based conditional GET supported
Consider also setting `ETag` for stronger revalidation -- ETags are content hashes that don't suffer from clock-skew or DST issues. Last-Modified alone is functional for conditional GETs and not a bug.
Asset Compression
No text asset hosts to measure
INFO
No text asset hosts to measure
Info::
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
23 requests over 1417ms
INFO
0 ms 500 ms 1.0 s 1.5 s FCP 1.4 s LCP 1.4 shttps://arefan.iranserver-ai.ir// https://arefan.iranserver-ai.ir/ — 200 — 28.8 KiB — 444 ms — h2https://cdn.jsdelivr.net/gh/rastikerdar/vazirmatn@v33.003/Vazirmatn-font-face.csscdn.jsdelivr.net/gh/rastikerdar/vaz... https://cdn.jsdelivr.net/gh/rastikerdar/vazirmatn@v33.003/Vazirmatn-font-face.css — 200 — 596 B — 87 ms — h2https://cdn.jsdelivr.net/gh/rastikerdar/shabnam-font@v5.0.1/dist/font-face.csscdn.jsdelivr.net/gh/rastikerdar/sha... https://cdn.jsdelivr.net/gh/rastikerdar/shabnam-font@v5.0.1/dist/font-face.css — 200 — 630 B — 86 ms — h2https://cdn.tailwindcss.com/cdn.tailwindcss.com/ https://cdn.tailwindcss.com/ — 302 — 472 B — 70 ms — h2https://cdnjs.cloudflare.com/ajax/libs/pdf.js/3.11.174/pdf.min.jscdnjs.cloudflare.com/ajax/libs/pdf.... https://cdnjs.cloudflare.com/ajax/libs/pdf.js/3.11.174/pdf.min.js — 200 — 72.9 KiB — 92 ms — h3https://cdn.jsdelivr.net/npm/xlsx@0.18.5/dist/xlsx.full.min.jscdn.jsdelivr.net/npm/xlsx@0.18.5/di... https://cdn.jsdelivr.net/npm/xlsx@0.18.5/dist/xlsx.full.min.js — 200 — 270.1 KiB — 104 ms — h2https://cdnjs.cloudflare.com/ajax/libs/qrcodejs/1.0.0/qrcode.min.jscdnjs.cloudflare.com/ajax/libs/qrco... https://cdnjs.cloudflare.com/ajax/libs/qrcodejs/1.0.0/qrcode.min.js — 200 — 6.6 KiB — 54 ms — h3https://arefan.iranserver-ai.ir/api.php?action=icon&size=192/api.php?action=icon&size=192 https://arefan.iranserver-ai.ir/api.php?action=icon&size=192 — 200 — 46.9 KiB — 256 ms — h2https://arefan.iranserver-ai.ir/api.php?action=manifest/api.php?action=manifest https://arefan.iranserver-ai.ir/api.php?action=manifest — -1 — 0 B — 534 ms — https://cdn.tailwindcss.com/3.4.17cdn.tailwindcss.com/3.4.17 https://cdn.tailwindcss.com/3.4.17 — 200 — 123.9 KiB — 47 ms — h2https://arefan.iranserver-ai.ir/app.js?v=11.0.0/app.js?v=11.0.0 https://arefan.iranserver-ai.ir/app.js?v=11.0.0 — 200 — 35.5 KiB — 114 ms — h2https://cdn.jsdelivr.net/gh/rastikerdar/vazirmatn@v33.003/fonts/webfonts/Vazirmatn-Bold.woff2cdn.jsdelivr.net/gh/rastikerdar/vaz... https://cdn.jsdelivr.net/gh/rastikerdar/vazirmatn@v33.003/fonts/webfonts/Vazirmatn-Bold.woff2 — 200 — 50.6 KiB — 69 ms — h3https://cdn.jsdelivr.net/gh/rastikerdar/vazirmatn@v33.003/fonts/webfonts/Vazirmatn-Black.woff2cdn.jsdelivr.net/gh/rastikerdar/vaz... https://cdn.jsdelivr.net/gh/rastikerdar/vazirmatn@v33.003/fonts/webfonts/Vazirmatn-Black.woff2 — 200 — 50.1 KiB — 65 ms — h3https://cdn.jsdelivr.net/gh/rastikerdar/vazirmatn@v33.003/fonts/webfonts/Vazirmatn-Regular.woff2cdn.jsdelivr.net/gh/rastikerdar/vaz... https://cdn.jsdelivr.net/gh/rastikerdar/vazirmatn@v33.003/fonts/webfonts/Vazirmatn-Regular.woff2 — 200 — 50.2 KiB — 27 ms — h3https://cdn.jsdelivr.net/gh/rastikerdar/shabnam-font@v5.0.1/dist/Shabnam.woff2cdn.jsdelivr.net/gh/rastikerdar/sha... https://cdn.jsdelivr.net/gh/rastikerdar/shabnam-font@v5.0.1/dist/Shabnam.woff2 — 200 — 35.6 KiB — 33 ms — h3https://cdn.jsdelivr.net/gh/rastikerdar/shabnam-font@v5.0.1/dist/Shabnam-Bold.woff2cdn.jsdelivr.net/gh/rastikerdar/sha... https://cdn.jsdelivr.net/gh/rastikerdar/shabnam-font@v5.0.1/dist/Shabnam-Bold.woff2 — 200 — 37.5 KiB — 32 ms — h3https://arefan.iranserver-ai.ir/nlpWorker.js/nlpWorker.js https://arefan.iranserver-ai.ir/nlpWorker.js — 200 — 53 B — 126 ms — h2https://arefan.iranserver-ai.ir/api.php?action=get_csrf_token/api.php?action=get_csrf_token https://arefan.iranserver-ai.ir/api.php?action=get_csrf_token — 200 — 403 B — 124 ms — h2https://arefan.iranserver-ai.ir/api.php?action=manifest&theme=emerald&v=1791177856569/api.php?action=manifest&theme=emer... https://arefan.iranserver-ai.ir/api.php?action=manifest&theme=emerald&v=1791177856569 — 200 — 2.6 KiB — 443 ms — h2https://arefan.iranserver-ai.ir/api.php?action=icon&size=192/api.php?action=icon&size=192 https://arefan.iranserver-ai.ir/api.php?action=icon&size=192 — 200 — 0 B — 1 ms — h2https://arefan.iranserver-ai.ir/api.php?action=check_auth/api.php?action=check_auth https://arefan.iranserver-ai.ir/api.php?action=check_auth — 200 — 294 B — 128 ms — h2https://arefan.iranserver-ai.ir/api.php?action=get_bootstrap_data/api.php?action=get_bootstrap_data https://arefan.iranserver-ai.ir/api.php?action=get_bootstrap_data — 200 — 4.1 KiB — 140 ms — h2https://arefan.iranserver-ai.ir/api.php?action=icon&size=192/api.php?action=icon&size=192 https://arefan.iranserver-ai.ir/api.php?action=icon&size=192 — 200 — 0 B — 1 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
35% of JavaScript execution is third-party
First-party Third-party 150ms · 343KB · ﷼83740/mo
cdnjs
CDN
Costly
Execution 85ms
Transfer 73 KB
Unused 91%
Monthly Cost ﷼47677/mo
jsDelivr
CDN
Costly
Execution 65ms
Transfer 270 KB
Unused 59%
Monthly Cost ﷼36063/mo

These scripts may cost more than they're worth

  • cdnjs adds 85ms and costs ~﷼47677/month
  • jsDelivr adds 65ms and costs ~﷼36063/month

cdnjs takes 85ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

91% of cdnjs's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

jsDelivr takes 65ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

59% of jsDelivr's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

How third-party costs are calculated

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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