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Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
91
GRADE
A
FIX
1
REVIEW
2
PASS
10
INFO
2

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

Mobile Desktop
98
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
95
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.
100
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

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

554 ms

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

1.05 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.

0.010

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

1.11 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.

1.06 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
15
10 PASS 2 REVIEW 1 FIX
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
17 images, 0 KB saveable
REVIEW
17 images, 0 KB saveable
Warning::
https://devowl.io/wp-content/uploads/logo/real-phy... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://devowl.io/wp-content/uploads/logo/real-cus... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://devowl.io/wp-content/uploads/logo/real-thu... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://devowl.io/wp-content/uploads/logo/wp-react... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://devowl.io/wp-content/uploads/logo/real-coo... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://devowl.io/wp-content/uploads/logo/real-med... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://devowl.io/wp-content/uploads/logo/real-cat... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
17 images 356 KB
0 oversized -0 KB
13 legacy format
7 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

B
JS Execution Cost
785ms total JS execution
REVIEW
785ms total JS execution
Info::
https://devowl.io/: 220ms CPU time
Info::
Unattributable: 208ms CPU time
Info::
https://devowl.io/wp-content/litespeed/js/52cc82e4...: 135ms CPU time
Info::
https://devowl.io/wp-content/e52cd3656f87ed0ec2978...: 99ms CPU time
Info::
https://devowl.io/wp-includes/js/jquery/jquery.min...: 65ms CPU time
Info::
Third-party scripts: 208ms (26% of total)

Main Thread Breakdown

Script Evaluation 35% Other 28% Style & Layout 24% Parse HTML & CSS 6% Script Parsing & Compilation 4% Rendering 4%
ScriptTotalScriptingParse/CompileParty
https://devowl.io/220ms22ms5ms1st
Unattributable208ms6ms0ms3rd
https://devowl.io/wp-content/litespeed/js/52cc82e4c01b4c6ccc20114c5e916bc7.js?ver=1a101135ms55ms6ms1st
https://devowl.io/wp-content/e52cd3656f87ed0ec29783e36921eb97/dist/1532000191.js?ver=402093d53ee8b8bb99ms95ms1ms1st
https://devowl.io/wp-includes/js/jquery/jquery.min.js?ver=3.7.165ms43ms3ms1st
https://devowl.io/wp-content/e52cd3656f87ed0ec29783e36921eb97/dist/1452102796.js?ver=4da9deaa8edb67e014c200f7fb07caf258ms20ms1ms1st
A
Page Weight Budget
937 KB transferred, 63 requests
PASS
937 KB transferred, 63 requests
Info::
Page weighs 2.1 MB (937 KB transferred)
Info::
Fonts are 274 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 274 KB
Info::
63 HTTP requests
Info::
Estimated 0.19 g CO2 per page load
937 KB / 2.4 MB budget
937 KB transferred
63 requests
0.19 g CO2 per page load
Images 356.3 KiB 38%
Fonts 274.2 KiB 29%
JavaScript 186.6 KiB 20%
HTML 55.1 KiB 6%
CSS 53.7 KiB 6%
Other 10.0 KiB 1%
Other 894 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+
Third-Party Impact
No third-party resources
PASS
No third-party resources
Info::
No third-party resources detected
No third-party resources detected — all resources are first-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
7 fonts (274 KB)
PASS
7 fonts (274 KB)
Info::
7 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

7

274 KB total

Render-blocking

0

of 7

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s FCP 554 ms LCP 1.1 shttps://devowl.io/wp-content/uploads/font/nunito-sans-normal-400.woff2nunito-sans-normal-400.... https://devowl.io/wp-content/uploads/font/nunito-sans-normal-400.woff2 — 25.7 KiB — 48 ms — font-display: swaphttps://devowl.io/wp-content/uploads/font/nunito-sans-normal-600.woff2nunito-sans-normal-600.... https://devowl.io/wp-content/uploads/font/nunito-sans-normal-600.woff2 — 25.6 KiB — 46 ms — font-display: swaphttps://devowl.io/wp-content/uploads/font/lato-regular.woff2lato-regular.woff2 https://devowl.io/wp-content/uploads/font/lato-regular.woff2 — 29.4 KiB — 58 ms — font-display: swaphttps://devowl.io/wp-content/uploads/font/lato-bold.woff2lato-bold.woff2 https://devowl.io/wp-content/uploads/font/lato-bold.woff2 — 29.6 KiB — 65 ms — font-display: swaphttps://devowl.io/wp-content/uploads/font/nunito-sans-normal-800.woff2nunito-sans-normal-800.... https://devowl.io/wp-content/uploads/font/nunito-sans-normal-800.woff2 — 25.5 KiB — 54 ms — font-display: swaphttps://devowl.io/wp-content/themes/Impreza/fonts/fa-solid-900.woff2?ver=8.44.2fa-solid-900.woff2 https://devowl.io/wp-content/themes/Impreza/fonts/fa-solid-900.woff2?ver=8.44.2 — 134.5 KiB — 29 ms — font-display: swaphttps://devowl.io/wp-content/uploads/smile_fonts/devowl-icons/devowl-icons.ttf?tpamwzdevowl-icons.ttf https://devowl.io/wp-content/uploads/smile_fonts/devowl-icons/devowl-icons.ttf?tpamwz — 4.0 KiB — 23 ms — font-display: swap
nunito-sans-normal-400.... woff2 swap
Size 26 KB
Load time 48 ms
Start 92 ms
Risk FOUT — text flashes from fallback to web font
nunito-sans-normal-600.... woff2 swap
Size 26 KB
Load time 46 ms
Start 93 ms
Risk FOUT — text flashes from fallback to web font
lato-regular.woff2 woff2 swap
Size 29 KB
Load time 58 ms
Start 93 ms
Risk FOUT — text flashes from fallback to web font
lato-bold.woff2 woff2 swap
Size 30 KB
Load time 65 ms
Start 93 ms
Risk FOUT — text flashes from fallback to web font
nunito-sans-normal-800.... woff2 swap
Size 26 KB
Load time 54 ms
Start 94 ms
Risk FOUT — text flashes from fallback to web font
fa-solid-900.woff2 woff2 swap
Size 134 KB
Load time 29 ms
Start 328 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
devowl-icons.ttf ttf swap
Size 4 KB
Load time 23 ms
Start 329 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
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 ~68 KB and ~136 ms

A+
JS Bundles
25 scripts, 23 KB unused
PASS
25 scripts, 23 KB unused
Warning::
https://devowl.io/wp-content/litespeed/js/52cc82e4...: 23 KB unused (67%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 23 KB
23 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://devowl.io/wp-content/litespeed/js/52cc82e4c01b4c6ccc20114c5e916bc7.js?ver=1a10134 KB23 KB (67%)✓1st
data:text/javascript;base64,aWYoZG9jdW1lbnQuY29va2llLmluY2x1ZGVzKCJ1c19jb2xvcl9zY2hlbWVfc3dpdGNoX2l…0 KB—✓3rd
https://devowl.io/wp-includes/js/jquery/jquery.min.js?ver=3.7.129 KB—✓1st
https://devowl.io/wp-content/e52cd3656f87ed0ec29783e36921eb97/dist/1532000191.js?ver=402093d53ee8b8bb9 KB—✓1st
https://devowl.io/wp-content/e52cd3656f87ed0ec29783e36921eb97/dist/239330335.js?ver=2ebddcad2dda126817 KB—✓1st
https://devowl.io/wp-content/e52cd3656f87ed0ec29783e36921eb97/dist/1485313411.js?ver=ac7a5a6e07f1d9683ba42c5f650783d311 KB—✓1st
data:text/javascript;base64,IWZ1bmN0aW9uKGEpeyJ1c2Ugc3RyaWN0Ijt2YXIgYj1mdW5jdGlvbihiLGMsZCl7ZnVuY3R…0 KB—✓3rd
https://devowl.io/wp-content/e52cd3656f87ed0ec29783e36921eb97/dist/1452102796.js?ver=4da9deaa8edb67e014c200f7fb07caf210 KB—✓1st
https://devowl.io/wp-content/litespeed/js/3af33d2267d7b4108f4209884fa60567.js?ver=1323d1 KB—✓1st
https://devowl.io/wp-content/litespeed/js/ce441da72eaefe6eb1a89cfee0a2de1e.js?ver=272821 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+
Page Weight Inventory
63 resources · 937 KB · 23 KB savings available
PASS
63 resources · 937 KB · 23 KB savings available
Info::
Within 1MB page-weight target
Got: 937 KB
Info::
8 third-party resources (0% of weight)
63 resources · 936.7 KiB · 8 third-party Within 1MB page-weight target
Image 39% · 366.3 KiB
Font 29% · 274.2 KiB
JavaScript 20% · 186.6 KiB
Document 6% · 55.1 KiB
CSS 6% · 53.7 KiB
Other 0% · 894 B

~22.6 KiB of savings available

Remove unused JavaScript: 22.6 KiB
A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Cloudflare

Network Waterfall
63 requests over 1277ms
INFO
0 ms 500 ms 1.0 s FCP 554 ms LCP 1.1 shttps://devowl.io// https://devowl.io/ — 200 — 55.1 KiB — 61 ms — h2https://devowl.io/wp-content/e52cd3656f87ed0ec29783e36921eb97/dist/1452102796.js?ver=4da9deaa8edb67e014c200f7fb07caf2/wp-content/e52cd3656f87ed0ec29783e... https://devowl.io/wp-content/e52cd3656f87ed0ec29783e36921eb97/dist/1452102796.js?ver=4da9deaa8edb67e014c200f7fb07caf2 — 200 — 10.4 KiB — 18 ms — h2https://devowl.io/wp-content/e52cd3656f87ed0ec29783e36921eb97/dist/864633273.js?ver=52be9ece2c571eef/wp-content/e52cd3656f87ed0ec29783e... https://devowl.io/wp-content/e52cd3656f87ed0ec29783e36921eb97/dist/864633273.js?ver=52be9ece2c571eef — 200 — 22.9 KiB — 36 ms — h2https://devowl.io/wp-content/e52cd3656f87ed0ec29783e36921eb97/dist/1084278183.js?ver=0876fc41201034d0878d5f13f7b839ad/wp-content/e52cd3656f87ed0ec29783e... https://devowl.io/wp-content/e52cd3656f87ed0ec29783e36921eb97/dist/1084278183.js?ver=0876fc41201034d0878d5f13f7b839ad — 200 — 15.3 KiB — 25 ms — h2https://devowl.io/wp-content/e52cd3656f87ed0ec29783e36921eb97/dist/1532000191.js?ver=402093d53ee8b8bb/wp-content/e52cd3656f87ed0ec29783e... https://devowl.io/wp-content/e52cd3656f87ed0ec29783e36921eb97/dist/1532000191.js?ver=402093d53ee8b8bb — 200 — 9.4 KiB — 21 ms — h2https://devowl.io/wp-content/e52cd3656f87ed0ec29783e36921eb97/dist/239330335.js?ver=2ebddcad2dda1268/wp-content/e52cd3656f87ed0ec29783e... https://devowl.io/wp-content/e52cd3656f87ed0ec29783e36921eb97/dist/239330335.js?ver=2ebddcad2dda1268 — 200 — 17.1 KiB — 36 ms — h2https://devowl.io/wp-content/plugins/real-cookie-banner-pro/public/lib/animate.css/animate.min.css?ver=4.1.1/wp-content/plugins/real-cookie-ban... https://devowl.io/wp-content/plugins/real-cookie-banner-pro/public/lib/animate.css/animate.min.css?ver=4.1.1 — 200 — 5.0 KiB — 17 ms — h2https://devowl.io/wp-content/e52cd3656f87ed0ec29783e36921eb97/dist/1485313411.js?ver=ac7a5a6e07f1d9683ba42c5f650783d3/wp-content/e52cd3656f87ed0ec29783e... https://devowl.io/wp-content/e52cd3656f87ed0ec29783e36921eb97/dist/1485313411.js?ver=ac7a5a6e07f1d9683ba42c5f650783d3 — 200 — 11.5 KiB — 38 ms — h2data:text/javascript;base64,IWZ1bmN0aW9uKGEpeyJ1c2Ugc3RyaWN0Ijt2YXIgYj1mdW5jdGlvbihiLGMsZCl7ZnVuY3R…data:text/javascript;base64,IWZ1bmN... data:text/javascript;base64,IWZ1bmN0aW9uKGEpeyJ1c2Ugc3RyaWN0Ijt2YXIgYj1mdW5jdGlvbihiLGMsZCl7ZnVuY3R… — 200 — 0 B — 0 ms — datahttps://devowl.io/wp-content/uploads/font/nunito-sans-normal-400.woff2/wp-content/uploads/font/nunito-san... https://devowl.io/wp-content/uploads/font/nunito-sans-normal-400.woff2 — 200 — 25.7 KiB — 48 ms — h2https://devowl.io/wp-content/uploads/font/nunito-sans-normal-600.woff2/wp-content/uploads/font/nunito-san... https://devowl.io/wp-content/uploads/font/nunito-sans-normal-600.woff2 — 200 — 25.6 KiB — 46 ms — h2https://devowl.io/wp-content/uploads/font/lato-regular.woff2/wp-content/uploads/font/lato-regul... https://devowl.io/wp-content/uploads/font/lato-regular.woff2 — 200 — 29.4 KiB — 58 ms — h2https://devowl.io/wp-content/uploads/font/lato-bold.woff2/wp-content/uploads/font/lato-bold.... https://devowl.io/wp-content/uploads/font/lato-bold.woff2 — 200 — 29.6 KiB — 65 ms — h2https://devowl.io/wp-content/uploads/font/nunito-sans-normal-800.woff2/wp-content/uploads/font/nunito-san... https://devowl.io/wp-content/uploads/font/nunito-sans-normal-800.woff2 — 200 — 25.5 KiB — 54 ms — h2https://devowl.io/wp-content/litespeed/css/b41558b12ed5c6fa61c95ec82400b480.css?ver=46b73/wp-content/litespeed/css/b41558b12... https://devowl.io/wp-content/litespeed/css/b41558b12ed5c6fa61c95ec82400b480.css?ver=46b73 — 200 — 1.1 KiB — 20 ms — h2https://devowl.io/wp-content/litespeed/css/fcb033598ce5f79c924c2418abca8a74.css?ver=6aeb9/wp-content/litespeed/css/fcb033598... https://devowl.io/wp-content/litespeed/css/fcb033598ce5f79c924c2418abca8a74.css?ver=6aeb9 — 200 — 33.0 KiB — 45 ms — h2https://devowl.io/wp-content/litespeed/css/8db463cedb284ca6ace76a1be3026d41.css?ver=d0fc6/wp-content/litespeed/css/8db463ced... https://devowl.io/wp-content/litespeed/css/8db463cedb284ca6ace76a1be3026d41.css?ver=d0fc6 — 200 — 288 B — 24 ms — h2https://devowl.io/wp-content/litespeed/css/0c1852e2ef0994c5610738a558617723.css?ver=9e734/wp-content/litespeed/css/0c1852e2e... https://devowl.io/wp-content/litespeed/css/0c1852e2ef0994c5610738a558617723.css?ver=9e734 — 200 — 4.7 KiB — 26 ms — h2https://devowl.io/wp-content/litespeed/css/ebfddb54b52690fc430f878ad84c88c4.css?ver=9761b/wp-content/litespeed/css/ebfddb54b... https://devowl.io/wp-content/litespeed/css/ebfddb54b52690fc430f878ad84c88c4.css?ver=9761b — 200 — 694 B — 46 ms — h2https://devowl.io/wp-content/litespeed/css/cdf240549e192f129275b5a3b7c1197a.css?ver=88e4c/wp-content/litespeed/css/cdf240549... https://devowl.io/wp-content/litespeed/css/cdf240549e192f129275b5a3b7c1197a.css?ver=88e4c — 200 — 2.8 KiB — 29 ms — h2https://devowl.io/wp-content/litespeed/css/229240400a9eebb636c1e97e380cc950.css?ver=b9e17/wp-content/litespeed/css/229240400... https://devowl.io/wp-content/litespeed/css/229240400a9eebb636c1e97e380cc950.css?ver=b9e17 — 200 — 5.4 KiB — 40 ms — h2https://devowl.io/wp-content/litespeed/css/aa0ea72bb2212e5cfeac16e36c235076.css?ver=f5e88/wp-content/litespeed/css/aa0ea72bb... https://devowl.io/wp-content/litespeed/css/aa0ea72bb2212e5cfeac16e36c235076.css?ver=f5e88 — 200 — 777 B — 37 ms — h2https://devowl.io/wp-includes/js/jquery/jquery.min.js?ver=3.7.1/wp-includes/js/jquery/jquery.min.j... https://devowl.io/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 — 200 — 29.3 KiB — 72 ms — h2https://devowl.io/wp-content/uploads/logo/main-menu/real-cookie-banner.svg/wp-content/uploads/logo/main-menu/... https://devowl.io/wp-content/uploads/logo/main-menu/real-cookie-banner.svg — 200 — 112.1 KiB — 76 ms — 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HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
26% of JavaScript execution is third-party
First-party Third-party 208ms · 0KB · €3/mo
Unattributable
Other
Costly
Execution 208ms
Transfer 0 KB
Monthly Cost €3/mo

These scripts may cost more than they're worth

  • Unattributable adds 208ms and costs ~€3/month

Unattributable takes 208ms 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

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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