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https://ip-api.com

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
99
GRADE
A+
FIX
0
REVIEW
1
PASS
14
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.
90
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.

983 ms

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

2.41 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.

0.000

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

983 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.

2.41 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
14 PASS 1 REVIEW
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Page Weight Budget
168 KB transferred, 13 requests
PASS
168 KB transferred, 13 requests
Info::
Page weighs 190 KB (168 KB transferred)
Info::
13 HTTP requests
Info::
Estimated 0.03 g CO2 per page load
168 KB / 2.4 MB budget
168 KB transferred
13 requests
0.03 g CO2 per page load
Fonts 121.1 KiB 72%
Images 35.9 KiB 21%
CSS 5.8 KiB 3%
HTML 4.2 KiB 3%
Other 901 B 1%
Other 429 B 0%
0 2.4 MB 4.9 MB
Under budget
A+
Third-Party Impact
1% third-party, 0 ms blocking
PASS
1% third-party, 0 ms blocking
Info::
Third-party code accounts for 1% of page weight (901 B of 168.4 KiB)
Info::
Third-party blocking time is low (0 ms)
99%
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
Image Optimization
2 images, 0 KB saveable
PASS
2 images, 0 KB saveable
Info::
All images are well-optimized
2 images 36 KB
0 oversized -0 KB
2 legacy format
0 missing dimensions CLS risk
A+
JS Execution Cost
319ms total JS execution
PASS
319ms total JS execution
Info::
https://ip-api.com/: 193ms CPU time
Info::
Unattributable: 126ms CPU time
Info::
Third-party scripts: 126ms (39% of total)

Main Thread Breakdown

Other 45% Style & Layout 27% Script Evaluation 18% Rendering 5% Parse HTML & CSS 4%
ScriptTotalScriptingParse/CompileParty
https://ip-api.com/193ms47ms3ms1st
Unattributable126ms8ms0ms3rd
A+
Font Loading
6 fonts (121 KB)
PASS
6 fonts (121 KB)
Info::
6 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

6

121 KB total

Render-blocking

0

of 6

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s 1.5 s 2.0 s 2.5 s FCP 983 ms LCP 2.4 shttps://ip-api.com/docs/static/dosis-v8-latin-200.woff2dosis-v8-latin-200.woff2 https://ip-api.com/docs/static/dosis-v8-latin-200.woff2 — 25.1 KiB — 19 ms — font-display: swaphttps://ip-api.com/docs/static/dosis-v8-latin-500.woff2dosis-v8-latin-500.woff2 https://ip-api.com/docs/static/dosis-v8-latin-500.woff2 — 26.1 KiB — 18 ms — font-display: swaphttps://ip-api.com/docs/static/dosis-v8-latin-regular.woff2dosis-v8-latin-regular.... https://ip-api.com/docs/static/dosis-v8-latin-regular.woff2 — 26.2 KiB — 19 ms — font-display: swaphttps://ip-api.com/docs/static/open-sans-v16-latin-300.woff2open-sans-v16-latin-300... https://ip-api.com/docs/static/open-sans-v16-latin-300.woff2 — 14.8 KiB — 19 ms — font-display: swaphttps://ip-api.com/docs/static/open-sans-v16-latin-600.woff2open-sans-v16-latin-600... https://ip-api.com/docs/static/open-sans-v16-latin-600.woff2 — 14.7 KiB — 19 ms — font-display: swaphttps://ip-api.com/docs/static/open-sans-v16-latin-regular.woff2open-sans-v16-latin-reg... https://ip-api.com/docs/static/open-sans-v16-latin-regular.woff2 — 14.2 KiB — 26 ms — font-display: swap
dosis-v8-latin-200.woff2 woff2 swap
Size 25 KB
Load time 19 ms
Start 25 ms
Risk FOUT — text flashes from fallback to web font
dosis-v8-latin-500.woff2 woff2 swap
Size 26 KB
Load time 18 ms
Start 25 ms
Risk FOUT — text flashes from fallback to web font
dosis-v8-latin-regular.... woff2 swap
Size 26 KB
Load time 19 ms
Start 25 ms
Risk FOUT — text flashes from fallback to web font
open-sans-v16-latin-300... woff2 swap
Size 15 KB
Load time 19 ms
Start 26 ms
Risk FOUT — text flashes from fallback to web font
open-sans-v16-latin-600... woff2 swap
Size 15 KB
Load time 19 ms
Start 26 ms
Risk FOUT — text flashes from fallback to web font
open-sans-v16-latin-reg... woff2 swap
Size 14 KB
Load time 26 ms
Start 26 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
No JavaScript
PASS
No JavaScript
Info::
No JavaScript bundles
No JavaScript files loaded.
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
13 resources · 168 KB · 0 KB savings available
PASS
13 resources · 168 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 168 KB
Info::
2 third-party resources (1% of weight)
13 resources · 168.4 KiB · 2 third-party Within 1MB page-weight target
Font 72% · 121.1 KiB
Image 22% · 36.3 KiB
CSS 3% · 5.8 KiB
Document 3% · 4.2 KiB
Other 1% · 901 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+
HTTP Caching
max-age=86400 (1 day)
PASS
max-age=86400 (1 day)
Info::
Cache-Control header is set
Got: max-age=86400
Info::
Effective TTL: 1 day (max-age=86400)
Info::
Last-Modified header present
Cache-Control

max-age=86400

DirectiveValueMeaning
max-age86400Cache for 1 day
Effective TTL: 86400 seconds
Network Waterfall
13 requests over 726ms
INFO
0 ms 500 ms 1.0 s 1.5 s 2.0 s 2.5 s FCP 983 ms LCP 2.4 shttps://ip-api.com// https://ip-api.com/ — 200 — 4.2 KiB — 10 ms — http/1.1https://ip-api.com/docs/static/dosis-v8-latin-200.woff2/docs/static/dosis-v8-latin-200.wof... https://ip-api.com/docs/static/dosis-v8-latin-200.woff2 — 200 — 25.1 KiB — 19 ms — http/1.1https://ip-api.com/docs/static/dosis-v8-latin-500.woff2/docs/static/dosis-v8-latin-500.wof... https://ip-api.com/docs/static/dosis-v8-latin-500.woff2 — 200 — 26.1 KiB — 18 ms — http/1.1https://ip-api.com/docs/static/dosis-v8-latin-regular.woff2/docs/static/dosis-v8-latin-regular... https://ip-api.com/docs/static/dosis-v8-latin-regular.woff2 — 200 — 26.2 KiB — 19 ms — http/1.1https://ip-api.com/docs/static/open-sans-v16-latin-300.woff2/docs/static/open-sans-v16-latin-30... https://ip-api.com/docs/static/open-sans-v16-latin-300.woff2 — 200 — 14.8 KiB — 19 ms — http/1.1https://ip-api.com/docs/static/open-sans-v16-latin-600.woff2/docs/static/open-sans-v16-latin-60... https://ip-api.com/docs/static/open-sans-v16-latin-600.woff2 — 200 — 14.7 KiB — 19 ms — http/1.1https://ip-api.com/docs/static/open-sans-v16-latin-regular.woff2/docs/static/open-sans-v16-latin-re... https://ip-api.com/docs/static/open-sans-v16-latin-regular.woff2 — 200 — 14.2 KiB — 26 ms — http/1.1https://ip-api.com/docs/static/page.css/docs/static/page.css https://ip-api.com/docs/static/page.css — 200 — 5.8 KiB — 16 ms — http/1.1https://ip-api.com/docs/static/bg.jpg/docs/static/bg.jpg https://ip-api.com/docs/static/bg.jpg — 200 — 33.2 KiB — 12 ms — http/1.1https://ip-api.com/docs/static/logo.png/docs/static/logo.png https://ip-api.com/docs/static/logo.png — 200 — 2.7 KiB — 8 ms — http/1.1https://m5jni39jw6zikfd2cpegl11gr176hh9r.edns.ip-api.com/json?lang=enm5jni39jw6zikfd2cpegl11gr176hh9r.ed... https://m5jni39jw6zikfd2cpegl11gr176hh9r.edns.ip-api.com/json?lang=en — 200 — 279 B — 672 ms — http/1.1https://demo.ip-api.com/json/?fields=66842623&lang=endemo.ip-api.com/json/?fields=668426... https://demo.ip-api.com/json/?fields=66842623&lang=en — 200 — 622 B — 15 ms — http/1.1https://ip-api.com/favicon.ico/favicon.ico https://ip-api.com/favicon.ico — 200 — 429 B — 4 ms — http/1.1
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
39% of JavaScript execution is third-party
First-party Third-party 126ms · 0KB · $2/mo
Unattributable
Other
Optional
Execution 126ms
Transfer 0 KB
Monthly Cost $2/mo

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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