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https://jiathis.com

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
95
GRADE
A
FIX
2
REVIEW
0
PASS
13
INFO
2

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

Mobile Desktop
100
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
81
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.

912 ms

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

912 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.

912 ms

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

920 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
17
13 PASS 2 FIX
D
Third-Party Impact
Action
77% third-party, 0 ms blocking
FIX
77% third-party, 0 ms blocking
Warning::
Third-party code accounts for 77% of page weight (10.7 KiB of 14.0 KiB)
Info::
Third-party blocking time is low (0 ms)
23%
77%
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.
Info::
Last-Modified header present

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

A+
Page Weight Budget
14 KB transferred, 4 requests
PASS
14 KB transferred, 4 requests
Info::
Page weighs 35 KB (14 KB transferred)
Info::
4 HTTP requests
Info::
Estimated 0.00 g CO2 per page load
14 KB / 2.4 MB budget
14 KB transferred
4 requests
0.00 g CO2 per page load
JavaScript 10.7 KiB 77%
HTML 2.3 KiB 16%
Other 571 B 4%
Other 448 B 3%
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
No images on this page
PASS
No images on this page
Info::
No images on this page
0 images 0 KB
0 oversized -0 KB
0 legacy format
0 missing dimensions CLS risk
A+
JS Execution Cost
217ms total JS execution
PASS
217ms total JS execution
Info::
Unattributable: 120ms CPU time
Info::
https://jiathis.com/: 97ms CPU time
Warning::
Third-party scripts: 120ms (55% of total)

Main Thread Breakdown

Other 51% Style & Layout 29% Script Evaluation 16%
ScriptTotalScriptingParse/CompileParty
Unattributable120ms6ms0ms3rd
https://jiathis.com/97ms3ms1ms1st
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://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da177152312451611 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
4 resources · 14 KB · 0 KB savings available
PASS
4 resources · 14 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 14 KB
Warning::
1 third-party resources (77% of weight)
4 resources · 14.0 KiB · 1 third-party Within 1MB page-weight target
JavaScript 77% · 10.7 KiB
Document 20% · 2.8 KiB
Other 3% · 448 B
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+
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
4 requests over 327ms
INFO
0 ms 200 ms 400 ms 600 ms 800 ms FCP 912 ms LCP 912 mshttps://jiathis.com// https://jiathis.com/ — 200 — 2.3 KiB — 132 ms — h3https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da1771523124516static.cloudflareinsights.com/beaco... https://static.cloudflareinsights.com/beacon.min.js/v8c78df7c7c0f484497ecbca7046644da1771523124516 — 200 — 10.7 KiB — 37 ms — h2https://jiathis.com/cdn-cgi/rum?/cdn-cgi/rum? https://jiathis.com/cdn-cgi/rum? — 204 — 448 B — 9 ms — h3https://jiathis.com/favicon.ico/favicon.ico https://jiathis.com/favicon.ico — 404 — 571 B — 117 ms — h3
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
55% of JavaScript execution is third-party
First-party Third-party 120ms · 0KB · $2/mo
Unattributable
Other
Optional
Execution 120ms
Transfer 0 KB
Monthly Cost $2/mo

55% of JavaScript execution time comes from third-party scripts.

Why this matters

Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.

Learn more ▾

Each third-party script is a black box: you don't control when it loads, what it executes, or how much it grows. They often account for a major share of total blocking time on average sites (HTTP Archive's Web Almanac documents the trend). Audit which ones you actually need, defer the rest, and use facade patterns (lite-youtube, lite-vimeo) for embedded media.

Source: web.dev / HTTP Archive Web Almanac

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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