Skip to content
https://stry-kon.com

Performance

· 26 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
87
GRADE
B
FIX
3
REVIEW
4
PASS
16
INFO
3

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

Mobile Desktop
55
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
86
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.
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.

9.09 s

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

38.82 s

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

87 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.

12.81 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.

39.26 s

Page Load Progression

597 ms
1.2 s
1.8 s
2.4 s
3.0 s
3.6 s
4.2 s
4.8 s
Checks
26
16 PASS 4 REVIEW 3 FIX
F
Page Weight Budget
Action
7.9 MB transferred, 19 requests
FIX
7.9 MB transferred, 19 requests
Critical::
Page weighs 8.3 MB (7.9 MB transferred)
Warning::
Images are 6.6 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 6.6 MB
Info::
Fonts are 1.2 MB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 1.2 MB
Info::
19 HTTP requests
Info::
Estimated 1.7 g CO2 per page load
7.9 MB / 2.4 MB budget
7.9 MB transferred
19 requests
1.7 g CO2 per page load
Images 6.6 MiB 83%
Fonts 1.2 MiB 15%
JavaScript 129.1 KiB 2%
HTML 13.5 KiB 0%
CSS 11.3 KiB 0%
Other 2.2 KiB 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

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

D
JS Execution Cost
Action
2006ms total JS execution
FIX
2006ms total JS execution
Warning::
https://stry-kon.com/: 1241ms CPU time
Warning::
Unattributable: 547ms CPU time
Info::
https://cdn.tailwindcss.com/?plugins=forms,contain...: 121ms CPU time
Info::
https://stry-kon.com/assets/custom.js: 97ms CPU time
Info::
Third-party scripts: 121ms (6% of total)

Main Thread Breakdown

Script Evaluation 40% Other 34% Style & Layout 18%
ScriptTotalScriptingParse/CompileParty
https://stry-kon.com/1241ms630ms1ms1st
Unattributable547ms4ms0ms1st
https://cdn.tailwindcss.com/?plugins=forms,container-queries121ms89ms31ms3rd
https://stry-kon.com/assets/custom.js97ms85ms1ms1st
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.

B
Image Optimization
8 images, 0 KB saveable
REVIEW
8 images, 0 KB saveable
Warning::
https://stry-kon.com/assets/logo.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
8 images 6.6 MB
0 oversized -0 KB
7 legacy format
1 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

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
Page Weight Inventory
Action
19 resources · 7.9 MB · 0 KB savings available
REVIEW
19 resources · 7.9 MB · 0 KB savings available
Warning::
Page weight 7.9 MB exceeds 1 MB target by 6.9 MB
Got: 7.9 MB Expected: ≤ 1 MB
Info::
8 third-party resources (16% of weight)
Info::
7 resources over 200KB
19 resources · 7.9 MiB · 8 third-party 6.9 MiB over 1MB target
Image 83% · 6.6 MiB
Font 15% · 1.2 MiB
JavaScript 2% · 129.1 KiB
Document 0% · 15.2 KiB
CSS 0% · 11.3 KiB
Other 0% · 501 B
A+
Third-Party Impact
16% third-party, 0 ms blocking
PASS
16% third-party, 0 ms blocking
Info::
Third-party code accounts for 16% of page weight (1.3 MiB of 7.9 MiB)
Info::
Third-party blocking time is low (0 ms)
84%
16%
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
3 fonts (1183 KB)
PASS
3 fonts (1183 KB)
Info::
3 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

3

1183 KB total

Render-blocking

0

of 3

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s 18.0 s 20.0 s 22.0 s 24.0 s 26.0 s 28.0 s 30.0 s 32.0 s 34.0 s 36.0 s 38.0 s 40.0 s FCP 9.1 s LCP 38.8 shttps://fonts.gstatic.com/s/materialsymbolsoutlined/v367/kJEPBvYX7BgnkSrUwT8OhrdQw4oELdPIeeII9v6oDMzBwG-RpA6RzaxHMPdY40KH8nGzv3fzfVJO1USv9ls.woff2kJEPBvYX7BgnkSrUwT8Ohrd... https://fonts.gstatic.com/s/materialsymbolsoutlined/v367/kJEPBvYX7BgnkSrUwT8OhrdQw4oELdPIeeII9v6oDMzBwG-RpA6RzaxHMPdY40KH8nGzv3fzfVJO1USv9ls.woff2 — 1.1 MiB — 220 ms — font-display: swaphttps://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa1ZL7W0Q5nw.woff2UcC73FwrK3iLTeHuS_nVMrM... https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa1ZL7W0Q5nw.woff2 — 47.3 KiB — 105 ms — font-display: swaphttps://fonts.gstatic.com/s/montserrat/v31/JTUSjIg1_i6t8kCHKm459WlhyyTh89Y.woff2JTUSjIg1_i6t8kCHKm459Wl... https://fonts.gstatic.com/s/montserrat/v31/JTUSjIg1_i6t8kCHKm459WlhyyTh89Y.woff2 — 34.7 KiB — 78 ms — font-display: swap
kJEPBvYX7BgnkSrUwT8Ohrd... woff2 swap
Size 1101 KB
Load time 220 ms
Start 716 ms
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
UcC73FwrK3iLTeHuS_nVMrM... woff2 swap
Size 47 KB
Load time 105 ms
Start 717 ms
Risk FOUT — text flashes from fallback to web font
JTUSjIg1_i6t8kCHKm459Wl... woff2 swap
Size 35 KB
Load time 78 ms
Start 718 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)

Fixing the unchecked items could save ~550 KB and ~1100 ms

A+
JS Bundles
2 scripts, 0 KB unused
PASS
2 scripts, 0 KB unused
0 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://cdn.tailwindcss.com/3.4.17?plugins=forms@0.5.10,container-queries@0.1.1127 KB—✓3rd
https://stry-kon.com/assets/custom.js2 KB—✓1st
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::
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).
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
1 JS blocking issue(s) detected
PASS
1 JS blocking issue(s) detected
Warning::
2 render-blocking <script src> tag(s) without async/defer
Each `<script src=...>` without `async`, `defer`, or `type="module"` blocks HTML parsing while the browser fetches and executes it. The block lasts the entire round-trip + execution time -- on slow networks this translates directly into LCP delay. Add `defer` (executes after parse, in source order) for scripts that interact with the DOM, or `async` (executes whenever ready) for analytics / independent scripts. Module scripts (`type="module"`) are deferred by default.
A+
CSS Performance Depth
No CSS performance depth issues detected
PASS
No CSS performance depth issues detected
Info::
No CSS performance depth issues detected
A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Hostinger

Network Waterfall
19 requests over 1357ms
INFO
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s 18.0 s 20.0 s 22.0 s 24.0 s 26.0 s 28.0 s 30.0 s 32.0 s 34.0 s 36.0 s 38.0 s 40.0 s FCP 9.1 s LCP 38.8 shttps://stry-kon.com// https://stry-kon.com/ — 200 — 13.5 KiB — 310 ms — h2https://cdn.tailwindcss.com/?plugins=forms,container-queriescdn.tailwindcss.com/?plugins=forms,... https://cdn.tailwindcss.com/?plugins=forms,container-queries — 302 — 501 B — 93 ms — h2https://fonts.googleapis.com/css2?family=Montserrat:wght@400;600;700;800&family=Inter:wght@400;500;600;700&display=swapfonts.googleapis.com/css2?family=Mo... https://fonts.googleapis.com/css2?family=Montserrat:wght@400;600;700;800&family=Inter:wght@400;500;600;700&display=swap — 200 — 1.4 KiB — 95 ms — h2https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&display=swapfonts.googleapis.com/css2?family=Ma... https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&display=swap — 200 — 497 B — 97 ms — h2https://stry-kon.com/assets/custom.css/assets/custom.css https://stry-kon.com/assets/custom.css — 200 — 9.5 KiB — 133 ms — h2https://stry-kon.com/assets/logo.png/assets/logo.png https://stry-kon.com/assets/logo.png — 200 — 37.8 KiB — 218 ms — h2https://stry-kon.com/assets/a_premium_futuristic_digital_agency_hero_background._abstrac.png/assets/a_premium_futuristic_digita... https://stry-kon.com/assets/a_premium_futuristic_digital_agency_hero_background._abstrac.png — 200 — 1.4 MiB — 655 ms — h2https://cdn.tailwindcss.com/3.4.17?plugins=forms@0.5.10,container-queries@0.1.1cdn.tailwindcss.com/3.4.17?plugins=... https://cdn.tailwindcss.com/3.4.17?plugins=forms@0.5.10,container-queries@0.1.1 — 200 — 127.2 KiB — 46 ms — h2https://stry-kon.com/assets/professional_digital_marketing_and_analytics_dashboard_mocku.png/assets/professional_digital_market... https://stry-kon.com/assets/professional_digital_marketing_and_analytics_dashboard_mocku.png — 200 — 1.2 MiB — 709 ms — h3https://stry-kon.com/assets/screenshot-ecommerce-1.png/assets/screenshot-ecommerce-1.png https://stry-kon.com/assets/screenshot-ecommerce-1.png — 200 — 1.1 MiB — 728 ms — h3https://stry-kon.com/assets/screenshot-ecommerce-2.png/assets/screenshot-ecommerce-2.png https://stry-kon.com/assets/screenshot-ecommerce-2.png — 200 — 1.1 MiB — 722 ms — h3https://stry-kon.com/assets/custom.js/assets/custom.js https://stry-kon.com/assets/custom.js — 200 — 2.0 KiB — 123 ms — h3https://stry-kon.com/assets/screenshot-meta-ads.png/assets/screenshot-meta-ads.png https://stry-kon.com/assets/screenshot-meta-ads.png — 200 — 878.0 KiB — 778 ms — h3https://stry-kon.com/assets/screenshot-google-ads.png/assets/screenshot-google-ads.png https://stry-kon.com/assets/screenshot-google-ads.png — 200 — 869.6 KiB — 761 ms — h3data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cp…www.w3.org/2000/svg' fill='none' vi... data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cp… — 200 — 0 B — 0 ms — datahttps://fonts.gstatic.com/s/materialsymbolsoutlined/v367/kJEPBvYX7BgnkSrUwT8OhrdQw4oELdPIeeII9v6oDMzBwG-RpA6RzaxHMPdY40KH8nGzv3fzfVJO1USv9ls.woff2fonts.gstatic.com/s/materialsymbols... https://fonts.gstatic.com/s/materialsymbolsoutlined/v367/kJEPBvYX7BgnkSrUwT8OhrdQw4oELdPIeeII9v6oDMzBwG-RpA6RzaxHMPdY40KH8nGzv3fzfVJO1USv9ls.woff2 — 200 — 1.1 MiB — 220 ms — h3https://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 — 105 ms — h3https://fonts.gstatic.com/s/montserrat/v31/JTUSjIg1_i6t8kCHKm459WlhyyTh89Y.woff2fonts.gstatic.com/s/montserrat/v31/... https://fonts.gstatic.com/s/montserrat/v31/JTUSjIg1_i6t8kCHKm459WlhyyTh89Y.woff2 — 200 — 34.7 KiB — 78 ms — h3https://stry-kon.com/favicon.ico/favicon.ico https://stry-kon.com/favicon.ico — 404 — 1.7 KiB — 94 ms — h3
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
6% of JavaScript execution is third-party
First-party Third-party 121ms · 0KB · $2/mo
cdn.tailwindcss.com
Other
Optional
Execution 121ms
Transfer 0 KB
Monthly Cost $2/mo

How third-party costs are calculated

Image Optimization
8 images, 6764 KB total, 4364 KB wasted
INFO

Image Optimization Audit

Total Images

8

Total Size

6764 KB

Oversized

6

Wasted

4364 KB

8 missing dimensions 6 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

Send Feedback