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Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
91
GRADE
A
FIX
2
REVIEW
3
PASS
10
INFO
2

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

Mobile Desktop
78
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
84
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.

3.41 s

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

4.35 s

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

20 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.052

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

3.41 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.

4.35 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
17
10 PASS 3 REVIEW 2 FIX
D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (291.8 KiB of 292.0 KiB)
Info::
Third-party blocking time is low (0 ms)
100%
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.

B
Image Optimization
12 images, 0 KB saveable
REVIEW
12 images, 0 KB saveable
Warning::
https://www.php-fig.org/img/platform-sh-logo.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
12 images 162 KB
0 oversized -0 KB
12 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
JS Execution Cost
820ms total JS execution
REVIEW
820ms total JS execution
Warning::
https://www.php-fig.org/: 374ms CPU time
Warning::
Unattributable: 270ms CPU time
Info::
https://ajax.googleapis.com/ajax/libs/jquery/1.11....: 102ms CPU time
Info::
https://ssl.google-analytics.com/ga.js: 75ms CPU time
Warning::
Third-party scripts: 820ms (100% of total)

Main Thread Breakdown

Other 36% Style & Layout 33% Script Evaluation 20% Rendering 5% Parse HTML & CSS 3% Script Parsing & Compilation 3%
ScriptTotalScriptingParse/CompileParty
https://www.php-fig.org/374ms11ms4ms3rd
Unattributable270ms9ms0ms3rd
https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js102ms79ms15ms3rd
https://ssl.google-analytics.com/ga.js75ms66ms7ms3rd
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Page Weight Budget
292 KB transferred, 24 requests
PASS
292 KB transferred, 24 requests
Info::
Page weighs 439 KB (292 KB transferred)
Info::
24 HTTP requests
Info::
Estimated 0.06 g CO2 per page load
292 KB / 2.4 MB budget
292 KB transferred
24 requests
0.06 g CO2 per page load
Images 162.1 KiB 55%
Fonts 60.0 KiB 21%
JavaScript 51.1 KiB 17%
CSS 8.6 KiB 3%
Other 6.8 KiB 2%
HTML 3.4 KiB 1%
0 2.4 MB 4.9 MB
Under budget
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 (60 KB)
PASS
3 fonts (60 KB)
Info::
3 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

3

60 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 1.0 s 2.0 s 3.0 s 4.0 s FCP 3.4 s LCP 4.3 shttps://fonts.gstatic.com/s/oswald/v57/TK3_WkUHHAIjg75cFRf3bXL8LICs1_FvsUZiZSSShiA.woff2TK3_WkUHHAIjg75cFRf3bXL... https://fonts.gstatic.com/s/oswald/v57/TK3_WkUHHAIjg75cFRf3bXL8LICs1_FvsUZiZSSShiA.woff2 — 12.0 KiB — 6 ms — font-display: swaphttps://fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 36.7 KiB — 10 ms — font-display: swaphttps://fonts.gstatic.com/s/sourcecodepro/v31/HI_diYsKILxRpg3hIP6sJ7fM7PqPMcMnZFqUwX28DMyQtMlrTFcfZJk.woff2HI_diYsKILxRpg3hIP6sJ7f... https://fonts.gstatic.com/s/sourcecodepro/v31/HI_diYsKILxRpg3hIP6sJ7fM7PqPMcMnZFqUwX28DMyQtMlrTFcfZJk.woff2 — 11.4 KiB — 14 ms — font-display: swap
TK3_WkUHHAIjg75cFRf3bXL... woff2 swap
Size 12 KB
Load time 6 ms
Start 625 ms
Risk FOUT — text flashes from fallback to web font
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 37 KB
Load time 10 ms
Start 626 ms
Risk FOUT — text flashes from fallback to web font
HI_diYsKILxRpg3hIP6sJ7f... woff2 swap
Size 11 KB
Load time 14 ms
Start 626 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+
JS Bundles
3 scripts, 21 KB unused
PASS
3 scripts, 21 KB unused
Warning::
https://ajax.googleapis.com/ajax/libs/jquery/1.11....: 21 KB unused (64%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 21 KB
21 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js33 KB21 KB (64%)✓3rd
https://www.php-fig.org/js/main.js0 KB—✓3rd
https://ssl.google-analytics.com/ga.js17 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

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
2 hints, 0 missing preconnects
PASS
2 hints, 0 missing preconnects
Info::
Page uses 2 resource hint(s)

Current Resource Hints

preconnect
2
preload
—
dns-prefetch
—
prefetch
—

2 resource hints configured

A
Page Weight Inventory
24 resources · 292 KB · 21 KB savings available
PASS
24 resources · 292 KB · 21 KB savings available
Info::
Within 1MB page-weight target
Got: 292 KB
Warning::
23 third-party resources (100% of weight)
24 resources · 292.0 KiB · 23 third-party Within 1MB page-weight target
Image 58% · 168.7 KiB
Font 21% · 60.0 KiB
JavaScript 17% · 51.1 KiB
CSS 3% · 8.6 KiB
Document 1% · 3.6 KiB

~21.0 KiB of savings available

Remove unused JavaScript: 21.0 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
Network Waterfall
24 requests over 1077ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s FCP 3.4 s LCP 4.3 shttps://php-fig.org// https://php-fig.org/ — 301 — 225 B — 295 ms — h2https://www.php-fig.org/www.php-fig.org/ https://www.php-fig.org/ — 200 — 3.4 KiB — 124 ms — h2https://www.php-fig.org/css/all.css?BGPQK5YPXHQD2XFJ5JN6PAC7GFWLIGXGKRYT55TQNNNEBY5XPHFA====www.php-fig.org/css/all.css?BGPQK5Y... https://www.php-fig.org/css/all.css?BGPQK5YPXHQD2XFJ5JN6PAC7GFWLIGXGKRYT55TQNNNEBY5XPHFA==== — 200 — 5.4 KiB — 105 ms — h2https://www.php-fig.org/css/hljs_default.css?BGPQK5YPXHQD2XFJ5JN6PAC7GFWLIGXGKRYT55TQNNNEBY5XPHFA====www.php-fig.org/css/hljs_default.cs... https://www.php-fig.org/css/hljs_default.css?BGPQK5YPXHQD2XFJ5JN6PAC7GFWLIGXGKRYT55TQNNNEBY5XPHFA==== — 200 — 647 B — 109 ms — h2https://fonts.googleapis.com/css?family=Roboto:300,400,400i,700,700i|Oswald|Source+Code+Profonts.googleapis.com/css?family=Rob... https://fonts.googleapis.com/css?family=Roboto:300,400,400i,700,700i|Oswald|Source+Code+Pro — 200 — 2.6 KiB — 28 ms — h2https://www.php-fig.org/img/platform-sh-logo.pngwww.php-fig.org/img/platform-sh-log... https://www.php-fig.org/img/platform-sh-logo.png — 200 — 2.9 KiB — 108 ms — h2https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.jsajax.googleapis.com/ajax/libs/jquer... https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js — 200 — 33.3 KiB — 22 ms — h2https://www.php-fig.org/js/main.jswww.php-fig.org/js/main.js https://www.php-fig.org/js/main.js — 200 — 320 B — 193 ms — h2https://www.php-fig.org/img/logo_icon.pngwww.php-fig.org/img/logo_icon.png https://www.php-fig.org/img/logo_icon.png — 200 — 2.3 KiB — 101 ms — h2https://www.php-fig.org/img/home_banner_bg.jpgwww.php-fig.org/img/home_banner_bg.... https://www.php-fig.org/img/home_banner_bg.jpg — 200 — 132.6 KiB — 286 ms — h2https://www.php-fig.org/img/autoloading_icon.pngwww.php-fig.org/img/autoloading_ico... https://www.php-fig.org/img/autoloading_icon.png — 200 — 2.5 KiB — 283 ms — h2https://www.php-fig.org/img/interfaces_icon.pngwww.php-fig.org/img/interfaces_icon... https://www.php-fig.org/img/interfaces_icon.png — 200 — 1.9 KiB — 283 ms — h2https://www.php-fig.org/img/coding_styles_icon.pngwww.php-fig.org/img/coding_styles_i... https://www.php-fig.org/img/coding_styles_icon.png — 200 — 1.5 KiB — 283 ms — h2https://fonts.gstatic.com/s/oswald/v57/TK3_WkUHHAIjg75cFRf3bXL8LICs1_FvsUZiZSSShiA.woff2fonts.gstatic.com/s/oswald/v57/TK3_... https://fonts.gstatic.com/s/oswald/v57/TK3_WkUHHAIjg75cFRf3bXL8LICs1_FvsUZiZSSShiA.woff2 — 200 — 12.0 KiB — 6 ms — h3https://fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2fonts.gstatic.com/s/roboto/v51/KFO7... https://fonts.gstatic.com/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 200 — 36.7 KiB — 10 ms — h3https://fonts.gstatic.com/s/sourcecodepro/v31/HI_diYsKILxRpg3hIP6sJ7fM7PqPMcMnZFqUwX28DMyQtMlrTFcfZJk.woff2fonts.gstatic.com/s/sourcecodepro/v... https://fonts.gstatic.com/s/sourcecodepro/v31/HI_diYsKILxRpg3hIP6sJ7fM7PqPMcMnZFqUwX28DMyQtMlrTFcfZJk.woff2 — 200 — 11.4 KiB — 14 ms — h3https://www.php-fig.org/img/mastodon_white_icon.svgwww.php-fig.org/img/mastodon_white_... https://www.php-fig.org/img/mastodon_white_icon.svg — 200 — 1.2 KiB — 221 ms — h2https://ssl.google-analytics.com/ga.jsssl.google-analytics.com/ga.js https://ssl.google-analytics.com/ga.js — 200 — 17.4 KiB — 11 ms — h2https://www.php-fig.org/img/bluesky_white_icon.svgwww.php-fig.org/img/bluesky_white_i... https://www.php-fig.org/img/bluesky_white_icon.svg — 200 — 545 B — 187 ms — h2https://ssl.google-analytics.com/r/__utm.gif?utmwv=5.7.2&utms=1&utmn=76267514&utmhn=www.php-fig.org&utmcs=UTF-8&utmsr=412x823&utmvp=412x823&utmsc=24-bit&utmul=en-us&utmje=0&utmfl=-&utmdt=PHP-FIG%20%E2%80%94%20PHP%20Framework%20Interop%20Group%20-%20PHP-FIG&utmhid=1771168863&utmr=-&utmp=%2F&utmht=1776897043714&utmac=UA-1997599-8&utmcc=__utma%3D178696677.980789425.1776897044.1776897044.1776897044.1%3B%2B__utmz%3D178696677.1776897044.1.1.utmcsr%3D(direct)%7Cutmccn%3D(direct)%7Cutmcmd%3D(none)%3B&utmjid=958755355&utmredir=1&utmu=qBAAAAAAAAAAAAAAAAAAAAAE~ssl.google-analytics.com/r/__utm.gi... https://ssl.google-analytics.com/r/__utm.gif?utmwv=5.7.2&utms=1&utmn=76267514&utmhn=www.php-fig.org&utmcs=UTF-8&utmsr=412x823&utmvp=412x823&utmsc=24-bit&utmul=en-us&utmje=0&utmfl=-&utmdt=PHP-FIG%20%E2%80%94%20PHP%20Framework%20Interop%20Group%20-%20PHP-FIG&utmhid=1771168863&utmr=-&utmp=%2F&utmht=1776897043714&utmac=UA-1997599-8&utmcc=__utma%3D178696677.980789425.1776897044.1776897044.1776897044.1%3B%2B__utmz%3D178696677.1776897044.1.1.utmcsr%3D(direct)%7Cutmccn%3D(direct)%7Cutmcmd%3D(none)%3B&utmjid=958755355&utmredir=1&utmu=qBAAAAAAAAAAAAAAAAAAAAAE~ — 200 — 440 B — 10 ms — h2https://www.php-fig.org/img/discord_footer_icon.pngwww.php-fig.org/img/discord_footer_... https://www.php-fig.org/img/discord_footer_icon.png — 200 — 10.4 KiB — 102 ms — h2https://www.php-fig.org/img/github_footer_icon.pngwww.php-fig.org/img/github_footer_i... https://www.php-fig.org/img/github_footer_icon.png — 200 — 3.4 KiB — 106 ms — h2https://www.php-fig.org/img/mailing_list_footer_icon.pngwww.php-fig.org/img/mailing_list_fo... https://www.php-fig.org/img/mailing_list_footer_icon.png — 200 — 2.6 KiB — 105 ms — h2https://www.php-fig.org/favicon.icowww.php-fig.org/favicon.ico https://www.php-fig.org/favicon.ico — 200 — 6.6 KiB — 100 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
100% of JavaScript execution is third-party
First-party Third-party 820ms · 54KB · $11/mo
www.php-fig.org
Other
Costly
Execution 374ms
Transfer 3 KB
Monthly Cost $5/mo
Unattributable
Other
Costly
Execution 270ms
Transfer 0 KB
Monthly Cost $4/mo
ajax.googleapis.com
Other
Optional
Execution 102ms
Transfer 33 KB
Unused 64%
Monthly Cost $1/mo
Google Analytics
Analytics
Optional
Execution 75ms
Transfer 17 KB
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • www.php-fig.org adds 374ms and costs ~$5/month
  • Unattributable adds 270ms and costs ~$4/month

100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

When third-party JS execution time exceeds your own, performance gains from frontend work are capped by code you don't own.

Learn more ▾

Every millisecond of third-party JS competes with your own for main-thread time. If their share is bigger than yours, optimization on your code base barely moves the needle. Audit, defer, or remove third-parties before further frontend optimization. Use Lighthouse's third-party audit to identify the worst offenders.

Source: web.dev

www.php-fig.org takes 374ms 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

Unattributable takes 270ms 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

64% of ajax.googleapis.com'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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