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https://ip-api.com

Performance

· 14 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
99
GRADE
A+
FIX
0
REVIEW
1
PASS
12
INFO
1

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.
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.

247 ms

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

497 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.

247 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.

497 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 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
244 KB transferred, 14 requests
PASS
244 KB transferred, 14 requests
Info::
Page weighs 265 KB (244 KB transferred)
Info::
14 HTTP requests
Info::
Estimated 0.05 g CO2 per page load
244 KB / 2.4 MB budget
244 KB transferred
14 requests
0.05 g CO2 per page load
Fonts 121.1 KiB 50%
Images 111.2 KiB 46%
CSS 5.8 KiB 2%
HTML 4.2 KiB 2%
Other 900 B 0%
Other 429 B 0%
0 2.4 MB 4.9 MB
Under budget
A
Third-Party Impact
31% third-party, 0 ms blocking
PASS
31% third-party, 0 ms blocking
Info::
Third-party code accounts for 31% of page weight (76.1 KiB of 243.7 KiB)
Info::
Third-party blocking time is low (0 ms)
69%
31%
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
3 images, 0 KB saveable
PASS
3 images, 0 KB saveable
Info::
All images are well-optimized
3 images 111 KB
0 oversized -0 KB
3 legacy format
0 missing dimensions CLS risk
A+
JS Execution Cost
70ms total JS execution
PASS
70ms total JS execution
Info::
https://ip-api.com/: 70ms CPU time

Main Thread Breakdown

Style & Layout 44% Other 39% Script Evaluation 8% Rendering 4% Parse HTML & CSS 3%
ScriptTotalScriptingParse/CompileParty
https://ip-api.com/70ms7ms1ms1st
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 FCP 247 ms LCP 497 mshttps://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 — 17 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 — 17 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 — 20 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 — 32 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 — 32 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 — 32 ms — font-display: swap
dosis-v8-latin-200.woff2 woff2 swap
Size 25 KB
Load time 17 ms
Start 23 ms
Risk FOUT — text flashes from fallback to web font
dosis-v8-latin-500.woff2 woff2 swap
Size 26 KB
Load time 17 ms
Start 24 ms
Risk FOUT — text flashes from fallback to web font
dosis-v8-latin-regular.... woff2 swap
Size 26 KB
Load time 20 ms
Start 29 ms
Risk FOUT — text flashes from fallback to web font
open-sans-v16-latin-300... woff2 swap
Size 15 KB
Load time 32 ms
Start 30 ms
Risk FOUT — text flashes from fallback to web font
open-sans-v16-latin-600... woff2 swap
Size 15 KB
Load time 32 ms
Start 30 ms
Risk FOUT — text flashes from fallback to web font
open-sans-v16-latin-reg... woff2 swap
Size 14 KB
Load time 32 ms
Start 31 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
14 resources · 244 KB · 0 KB savings available
PASS
14 resources · 244 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 244 KB
Info::
3 third-party resources (31% of weight)
14 resources · 243.7 KiB · 3 third-party Within 1MB page-weight target
Font 50% · 121.1 KiB
Image 46% · 111.6 KiB
CSS 2% · 5.8 KiB
Document 2% · 4.2 KiB
Other 0% · 900 B
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
14 requests over 948ms
INFO
0 ms 200 ms 400 ms 600 ms 800 ms FCP 247 ms LCP 497 mshttps://ip-api.com// https://ip-api.com/ — 200 — 4.2 KiB — 13 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 — 17 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 — 17 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 — 20 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 — 32 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 — 32 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 — 32 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 — 18 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 — 17 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 — 12 ms — http/1.1https://398s2bi8am78b5y7wbcleb2o6idmjmda.edns.ip-api.com/json?lang=en398s2bi8am78b5y7wbcleb2o6idmjmda.ed... https://398s2bi8am78b5y7wbcleb2o6idmjmda.edns.ip-api.com/json?lang=en — 200 — 278 B — 673 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 — 16 ms — http/1.1https://cache.ip-api.com/103.885,1.32731,10cache.ip-api.com/103.885,1.32731,10 https://cache.ip-api.com/103.885,1.32731,10 — 200 — 75.2 KiB — 839 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
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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