https://dzone.com
Performance
· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.SCORE
89
GRADE
B
FIX
3
REVIEW
0
PASS
12
INFO
2
Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
61
90
92
36
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
1.89 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
3.82 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1.49 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.003
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.89 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.
4.66 s
Page Load Progression
454 ms
909 ms
1.4 s 1.8 s
2.3 s 2.7 s
3.2 s
3.6 sChecks
1712 PASS 3 FIX
DThird-Party ImpactAction82% third-party, 0 ms blockingFIX
Third-Party Impact
Action82% third-party, 0 ms blocking
82% third-party, 0 ms blocking
Warning::
Third-party code accounts for 82% of page weight (414.7 KiB of 503.8 KiB)
Info::
Third-party blocking time is low (0 ms)
18%
82%
First-party Third-party
DJS Execution CostAction2457ms total JS executionFIX
JS Execution Cost
Action2457ms total JS execution
2457ms total JS execution
Warning::
https://dzone.com/cdn-cgi/challenge-platform/h/b/o...: 2057ms CPU time
Info::
Unattributable: 233ms CPU time
Info::
https://dzone.com/: 115ms CPU time
Info::
https://challenges.cloudflare.com/turnstile/v0/b/0...: 51ms CPU time
Info::
Third-party scripts: 284ms (12% of total)
Main Thread Breakdown
Script Evaluation 83% Other 11%
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://dzone.com/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=9effceab7b834585 | 2057ms | 1984ms | 25ms | 1st |
| Unattributable | 233ms | 13ms | 0ms | 3rd |
| https://dzone.com/ | 115ms | 12ms | 2ms | 1st |
| https://challenges.cloudflare.com/turnstile/v0/b/0b8fb825cb67/api.js?onload=cFRiY3&render=explicit | 51ms | 33ms | 8ms | 3rd |
FHTTP CachingActionNo cache headersFIX
HTTP Caching
ActionNo cache headers
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.
A+Page Weight Budget504 KB transferred, 41 requestsPASS
Page Weight Budget
504 KB transferred, 41 requests
504 KB transferred, 41 requests
Info::
Page weighs 895 KB (504 KB transferred)
Info::
41 HTTP requests
Info::
Estimated 0.10 g CO2 per page load
504 KB transferred
41 requests
0.10 g CO2 per page load
Other 308.8 KiB 61%
HTML 101.3 KiB 20%
JavaScript 85.4 KiB 17%
Images 5.2 KiB 1%
Other 1.7 KiB 0%
Other 1.4 KiB 0%
CSS 0 B 0%
0 2.4 MB 4.9 MB
Under budget
A+Text CompressionAll text resources are compressedPASS
Text Compression
All text resources are compressed
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
AImage Optimization3 images, 0 KB saveablePASS
Image Optimization
3 images, 0 KB saveable
3 images, 0 KB saveable
Info::
All images are well-optimized
3 images 5 KB
0 oversized -0 KB
3 legacy format
0 missing dimensions CLS risk
A+Font LoadingNo web fonts (system fonts)PASS
Font Loading
No web fonts (system fonts)
No web fonts (system fonts)
Info::
No web fonts loaded — system fonts are fastest
No web fonts loaded — system fonts are optimal.
A+JS Bundles14 scripts, 0 KB unusedPASS
JS Bundles
14 scripts, 0 KB unused
14 scripts, 0 KB unused
0 KB unused JavaScript
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://dzone.com/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=9effceab7b834585 | 68 KB | — | ✓ | 1st |
| blob:https://dzone.com/f25c1446-5bee-44da-b1eb-6474c2b92226 | 0 KB | — | ✓ | 3rd |
| https://challenges.cloudflare.com/turnstile/v0/b/0b8fb825cb67/api.js?onload=cFRiY3&render=explicit | 17 KB | — | ✓ | 3rd |
| https://i6byw9zmz4ncxhhkb.ay.delivery/manager/i6ByW9Zmz4ncxhHkb | 0 KB | — | ✓ | 3rd |
| https://securepubads.g.doubleclick.net/tag/js/gpt.js | 0 KB | — | ✓ | 3rd |
| https://dz2cdn1.dzone.com/themes/dz20/lib/static/jquery/jquery.min.js | 0 KB | — | ✓ | 3rd |
| https://i6byw9zmz4ncxhhkb.ay.delivery/manager/i6ByW9Zmz4ncxhHkb | 0 KB | — | ✓ | 3rd |
| https://securepubads.g.doubleclick.net/tag/js/gpt.js | 0 KB | — | ✓ | 3rd |
| https://dz2cdn1.dzone.com/themes/dz20/lib/static/jquery/jquery.min.js | 0 KB | — | ✓ | 3rd |
| blob:https://dzone.com/7b8864b3-2da2-48af-9b8a-04e08df8b7ed | -0 KB | — | ✓ | 3rd |
A+Resource CachingAll resources properly cachedPASS
Resource Caching
All resources properly cached
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+Critical Rendering PathNo render-blocking resourcesPASS
Critical Rendering Path
No render-blocking resources
No render-blocking resources
Info::
No render-blocking resources detected
A+Resource HintsNo optimization neededPASS
Resource Hints
No optimization needed
No optimization needed
Info::
No resource hint issues
APage Weight Inventory41 resources · 504 KB · 0 KB savings availablePASS
Page Weight Inventory
41 resources · 504 KB · 0 KB savings available
41 resources · 504 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 504 KB
Warning::
35 third-party resources (82% of weight)
Info::
1 resources over 200KB
41 resources · 503.8 KiB · 35 third-party Within 1MB page-weight target
Other 62% · 310.5 KiB
Document 20% · 102.7 KiB
JavaScript 17% · 85.4 KiB
Image 1% · 5.2 KiB
CSS 0% · 0 B
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 41 resources | 503.8 KiB | ||||||
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
Render-Blocking Resources
No render-blocking resources detected
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+Third-Party ResourcesNo third-party resources detectedPASS
Third-Party Resources
No third-party resources detected
No third-party resources detected
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
Whether the site is served from green-energy infrastructure
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Network Waterfall41 requests over 3219msINFO
Network Waterfall
41 requests over 3219ms
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
12% of JavaScript execution is third-party
First-party Third-party 284ms · 17KB · $4/mo
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 233ms | 0 KB | — | $3/mo | Costly |
challenges.cloudflare.com challenges.cloudflare.com | Other | 51ms | 17 KB | — | $1/mo | Optional |
Unattributable
Other
Execution 233ms
Transfer 0 KB
Monthly Cost $3/mo
challenges.cloudflare.com
Other
Execution 51ms
Transfer 17 KB
Monthly Cost $1/mo
These scripts may cost more than they're worth
- Unattributable adds 233ms and costs ~$3/month
Unattributable takes 233ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
Why this matters
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.