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Performance

· 14 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
93
GRADE
A
FIX
1
REVIEW
0
PASS
12
INFO
1

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.
100
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.

541 ms

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

693 ms

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.

0.000

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

1.50 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.

693 ms

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
14
12 PASS 1 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 (187.5 KiB of 187.9 KiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
A+
Page Weight Budget
188 KB transferred, 7 requests
PASS
188 KB transferred, 7 requests
Info::
Page weighs 204 KB (188 KB transferred)
Info::
7 HTTP requests
Info::
Estimated 0.04 g CO2 per page load
188 KB / 2.4 MB budget
188 KB transferred
7 requests
0.04 g CO2 per page load
Images 169.7 KiB 90%
CSS 6.8 KiB 4%
JavaScript 4.5 KiB 2%
Other 3.9 KiB 2%
HTML 2.9 KiB 2%
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
Image Optimization
1 images, 0 KB saveable
PASS
1 images, 0 KB saveable
Warning::
https://www.marxists.org/images/index.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
1 images 170 KB
0 oversized -0 KB
1 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

A+
JS Execution Cost
No JS execution data
PASS
No JS execution data
Info::
No significant JS execution detected

Main Thread Breakdown

Other 67% Style & Layout 15% Script Evaluation 10% Parse HTML & CSS 5%
A+
Font Loading
No web fonts (system fonts)
PASS
No web fonts (system fonts)
Info::
No web fonts loaded — system fonts are fastest
No web fonts loaded — system fonts are optimal.
A+
JS Bundles
1 scripts, 0 KB unused
PASS
1 scripts, 0 KB unused
0 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.marxists.org/admin/js/menu.js4 KB—✓3rd
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
7 resources · 188 KB · 0 KB savings available
PASS
7 resources · 188 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 188 KB
Warning::
6 third-party resources (100% of weight)
7 resources · 187.9 KiB · 6 third-party Within 1MB page-weight target
Image 92% · 173.2 KiB
CSS 4% · 6.8 KiB
JavaScript 2% · 4.5 KiB
Document 2% · 3.3 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: Hetzner Online GmbH

A
HTTP Caching
max-age=604800 (1 week)
PASS
max-age=604800 (1 week)
Info::
Cache-Control header is set
Got: max-age=604800
Info::
Effective TTL: 1 week (max-age=604800)
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

max-age=604800

DirectiveValueMeaning
max-age604800Cache for 1 week
Effective TTL: 604800 seconds
Network Waterfall
7 requests over 2328ms
INFO
0 ms 500 ms 1.0 s 1.5 s 2.0 s FCP 541 ms LCP 693 mshttps://marxists.org// https://marxists.org/ — 301 — 390 B — 693 ms — http/1.1https://www.marxists.org/www.marxists.org/ https://www.marxists.org/ — 200 — 2.9 KiB — 498 ms — http/1.1https://www.marxists.org/admin/js/menu.jswww.marxists.org/admin/js/menu.js https://www.marxists.org/admin/js/menu.js — 200 — 4.5 KiB — 165 ms — http/1.1https://www.marxists.org/css/works-red.csswww.marxists.org/css/works-red.css https://www.marxists.org/css/works-red.css — 200 — 1.4 KiB — 326 ms — http/1.1https://www.marxists.org/images/index.jpgwww.marxists.org/images/index.jpg https://www.marxists.org/images/index.jpg — 200 — 169.7 KiB — 955 ms — http/1.1https://www.marxists.org/css/works.csswww.marxists.org/css/works.css https://www.marxists.org/css/works.css — 200 — 5.4 KiB — 165 ms — http/1.1https://www.marxists.org/favicon.icowww.marxists.org/favicon.ico https://www.marxists.org/favicon.ico — 200 — 3.5 KiB — 162 ms — http/1.1
HTML JavaScript CSS Images Fonts XHR/Fetch Other
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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