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Performance

· 14 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
89
GRADE
B
FIX
2
REVIEW
1
PASS
9
INFO
2

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

Mobile Desktop
99
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
89
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
92
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
82
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.

446 ms

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

542 ms

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

115 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.

698 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.

1.03 s

Page Load Progression

500 ms
1.0 s
1.5 s
2.0 s
2.5 s
3.0 s
3.5 s
4.0 s
Checks
14
9 PASS 1 REVIEW 2 FIX
D
Third-Party Impact
Action
68% third-party, 0 ms blocking
FIX
68% third-party, 0 ms blocking
Warning::
Third-party code accounts for 68% of page weight (541.4 KiB of 792.0 KiB)
Info::
Third-party blocking time is low (0 ms)
32%
68%
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
JS Execution Cost
646ms total JS execution
REVIEW
646ms total JS execution
Warning::
https://www.upwork.com/cdn-cgi/challenge-platform/...: 518ms CPU time
Info::
Unattributable: 75ms CPU time
Info::
https://www.upwork.com/: 52ms CPU time
Info::
Third-party scripts: 75ms (12% of total)

Main Thread Breakdown

Script Evaluation 80% Other 13%
ScriptTotalScriptingParse/CompileParty
https://www.upwork.com/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=9e8bb14d0d0ffdae518ms500ms6ms1st
Unattributable75ms2ms0ms3rd
https://www.upwork.com/52ms13ms1ms1st
A
Page Weight Budget
792 KB transferred, 23 requests
PASS
792 KB transferred, 23 requests
Info::
Page weighs 1.3 MB (792 KB transferred)
Info::
23 HTTP requests
Info::
Estimated 0.16 g CO2 per page load
792 KB / 2.4 MB budget
792 KB transferred
23 requests
0.16 g CO2 per page load
Other 293.5 KiB 37%
HTML 262.5 KiB 33%
Fonts 145.8 KiB 18%
JavaScript 86.8 KiB 11%
Other 1.7 KiB 0%
Images 1.6 KiB 0%
Other 64 B 0%
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
3 images, 0 KB saveable
PASS
3 images, 0 KB saveable
Info::
All images are well-optimized
3 images 2 KB
0 oversized -0 KB
2 legacy format
0 missing dimensions CLS risk
A+
Font Loading
1 fonts (146 KB)
PASS
1 fonts (146 KB)
Info::
1 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

1

146 KB total

Render-blocking

0

of 1

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s FCP 446 ms LCP 542 msdata:font/woff2;base64,d09GMgABAAAAAkcgABIAAAAGMigAAkayAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGoPwKhuJlCQc…woff2;base64,d09GMgABAA... data:font/woff2;base64,d09GMgABAAAAAkcgABIAAAAGMigAAkayAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGoPwKhuJlCQc… — 145.8 KiB — 0 ms — font-display: swap
woff2;base64,d09GMgABAA... woff2 swap
Size 146 KB
Load time 0 ms
Start 0 ms
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
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)

Fixing the unchecked items could save ~73 KB and ~146 ms

A+
JS Bundles
11 scripts, 0 KB unused
PASS
11 scripts, 0 KB unused
0 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.upwork.com/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=9e8bb14d0d0ffdae69 KB—✓1st
blob:https://www.upwork.com/019603a5-d969-4553-bb19-69f27d37d4aa0 KB—✓3rd
https://challenges.cloudflare.com/turnstile/v0/b/625261456364/api.js?onload=OBvX9&render=explicit17 KB—✓3rd
blob:https://www.upwork.com/ab6c62cb-eadc-40f3-adb2-fc9656b7bd7a-0 KB—✓3rd
blob:https://challenges.cloudflare.com/3e8ab7fd-47fb-4999-abbd-f4efece740a40 KB—✓3rd
blob:https://challenges.cloudflare.com/f5218ac1-0a45-49f1-baa1-b27919274ac4-0 KB—✓3rd
blob:https://challenges.cloudflare.com/f5218ac1-0a45-49f1-baa1-b27919274ac4-0 KB—✓3rd
blob:https://challenges.cloudflare.com/f5218ac1-0a45-49f1-baa1-b27919274ac4-0 KB—✓3rd
blob:https://challenges.cloudflare.com/f5218ac1-0a45-49f1-baa1-b27919274ac4-0 KB—✓3rd
blob:https://challenges.cloudflare.com/f5218ac1-0a45-49f1-baa1-b27919274ac4-0 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+
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
23 requests over 0ms
INFO

Performance analysis not available for this result.

Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
12% of JavaScript execution is third-party
First-party Third-party 75ms · 0KB · $1/mo
Unattributable
Other
Optional
Execution 75ms
Transfer 0 KB
Monthly Cost $1/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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