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Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
76
GRADE
C
FIX
3
REVIEW
4
PASS
8
INFO
2

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

49
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.
81
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
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.

12.17 s

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

24.10 s

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

49 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.152

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

12.17 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.

24.33 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
8 PASS 4 REVIEW 3 FIX
F
Page Weight Budget
Action
4.9 MB transferred, 133 requests
FIX
4.9 MB transferred, 133 requests
Critical::
Page weighs 9.8 MB (4.9 MB transferred)
Warning::
Images are 2.5 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 2.5 MB
Warning::
JavaScript is 1.2 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.2 MB
Info::
Fonts are 793 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 793 KB
Info::
CSS is 274 KB — consider purging unused styles
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
Got: 274 KB
Warning::
133 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 1.0 g CO2 per page load
4.9 MB / 2.4 MB budget
4.9 MB transferred
133 requests
1.0 g CO2 per page load
Images 2.5 MiB 51%
JavaScript 1.2 MiB 24%
Fonts 793.0 KiB 16%
CSS 274.5 KiB 5%
HTML 114.4 KiB 2%
Other 71.1 KiB 1%
Other 3.9 KiB 0%
Other 1.8 KiB 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Over budget

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.

Source: web.dev

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Why this matters

JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.

Source: web.dev

Subset fonts to include only used characters, or switch to system font stacks.

Why this matters

Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).

Source: web.dev font loading

Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.

Why this matters

CSS bundle is large — purge unused styles (PurgeCSS, Tailwind JIT) to reduce CSS payload.

Source: web.dev

Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.

Why this matters

High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.

Source: web.dev

D
Third-Party Impact
Action
87% third-party, 0 ms blocking
FIX
87% third-party, 0 ms blocking
Warning::
Third-party code accounts for 87% of page weight (4.3 MiB of 4.9 MiB)
Info::
Third-party blocking time is low (0 ms)
87%
First-party Third-party
D
Page Weight Inventory
Action
133 resources · 4.9 MB · 64 KB savings available
FIX
133 resources · 4.9 MB · 64 KB savings available
Warning::
Page weight 3.9 MB over 1MB target
Got: 4.9 MB Expected: ≤ 1 MB
Info::
~64 KB of savings available
Warning::
84 third-party resources (87% of weight)
Info::
5 resources over 200KB
133 resources · 4.9 MiB · 84 third-party 3.9 MiB over 1MB target
Image 51% · 2.5 MiB
JavaScript 24% · 1.2 MiB
Font 16% · 793.0 KiB
CSS 5% · 274.5 KiB
Document 2% · 115.5 KiB
Other 1% · 73.5 KiB

~63.5 KiB of savings available

Remove unused JavaScript: 63.5 KiB
C
Image Optimization
Action
22 images, 0 KB saveable
REVIEW
22 images, 0 KB saveable
Warning::
https://apogee.spacenews.com/assets/53442861-32c9-... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://apogee.spacenews.com/assets/893371e8-a16f-... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://apogee.spacenews.com/assets/17b925ca-d96e-... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
22 images 2.5 MB
0 oversized -0 KB
6 legacy format
3 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

C
JS Execution Cost
Action
1708ms total JS execution
REVIEW
1708ms total JS execution
Warning::
Unattributable: 524ms CPU time
Warning::
https://spacenews.com/: 316ms CPU time
Info::
https://www.googletagmanager.com/gtag/js?id=G-Y8V6...: 243ms CPU time
Info::
https://elevate.spacenews.com/emit/9128.js?ver=1.0...: 226ms CPU time
Info::
https://cdn2.niceboard.co/static-app/js/jquery-3.4...: 178ms CPU time
Warning::
Third-party scripts: 1392ms (82% of total)

Main Thread Breakdown

Script Evaluation 34% Other 27% Style & Layout 20% Parse HTML & CSS 9% Script Parsing & Compilation 6%
ScriptTotalScriptingParse/CompileParty
Unattributable524ms8ms0ms3rd
https://spacenews.com/316ms31ms11ms1st
https://www.googletagmanager.com/gtag/js?id=G-Y8V618Z7WR243ms191ms46ms3rd
https://elevate.spacenews.com/emit/9128.js?ver=1.0.0226ms19ms1ms3rd
https://cdn2.niceboard.co/static-app/js/jquery-3.4.1.min.js178ms123ms9ms3rd
https://c0.wp.com/c/6.9.4/wp-includes/js/jquery/jquery.min.js126ms46ms6ms3rd
https://jobs.spacenews.com/embed/jobs95ms61ms2ms3rd
B
JS Bundles
53 scripts, 64 KB unused
REVIEW
53 scripts, 64 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-Y8V6...: 64 KB unused (40%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 64 KB
64 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-Y8V618Z7WR157 KB64 KB (40%)3rd
https://c0.wp.com/c/6.9.4/wp-includes/js/jquery/jquery.min.js31 KB3rd
https://c0.wp.com/c/6.9.4/wp-includes/js/jquery/jquery-migrate.min.js5 KB3rd
https://c0.wp.com/c/6.9.4/wp-includes/js/underscore.min.js8 KB3rd
https://c0.wp.com/c/6.9.4/wp-includes/js/wp-util.min.js1 KB3rd
https://c0.wp.com/c/6.9.4/wp-includes/js/dist/hooks.min.js2 KB3rd
https://c0.wp.com/c/6.9.4/wp-includes/js/dist/i18n.min.js3 KB3rd
https://c0.wp.com/c/6.9.4/wp-includes/js/dist/vendor/wp-polyfill.min.js12 KB3rd
https://c0.wp.com/c/6.9.4/wp-includes/js/dist/url.min.js4 KB3rd
https://c0.wp.com/c/6.9.4/wp-includes/js/dist/dom-ready.min.js1 KB3rd

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

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+
Font Loading
10 fonts (793 KB)
PASS
10 fonts (793 KB)
Info::
10 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

10

793 KB total

Render-blocking

0

of 10

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s 18.0 s 20.0 s 22.0 s 24.0 s FCP 12.2 s LCP 24.1 shttps://spacenews.com/wp-content/cache/perfmatters/spacenews.com/fonts/dFa5ZfeM_74wlPZtksIFYuUe6HOpW3pwfa0.woff2dFa5ZfeM_74wlPZtksIFYuU... https://spacenews.com/wp-content/cache/perfmatters/spacenews.com/fonts/dFa5ZfeM_74wlPZtksIFYuUe6HOpW3pwfa0.woff2 — 17.1 KiB — 137 ms — font-display: swaphttps://spacenews.com/wp-content/cache/perfmatters/spacenews.com/fonts/i7dOIFdwYjGaAMFtZd_QA1ZbYFeQGQyU.woff2i7dOIFdwYjGaAMFtZd_QA1Z... https://spacenews.com/wp-content/cache/perfmatters/spacenews.com/fonts/i7dOIFdwYjGaAMFtZd_QA1ZbYFeQGQyU.woff2 — 31.8 KiB — 187 ms — font-display: swaphttps://spacenews.com/wp-content/cache/perfmatters/spacenews.com/fonts/dFa5ZfeM_74wlPZtksIFYoEf6HOpW3pwfa0.woff2dFa5ZfeM_74wlPZtksIFYoE... https://spacenews.com/wp-content/cache/perfmatters/spacenews.com/fonts/dFa5ZfeM_74wlPZtksIFYoEf6HOpW3pwfa0.woff2 — 16.8 KiB — 155 ms — font-display: swaphttps://spacenews.com/wp-content/cache/perfmatters/spacenews.com/fonts/i7dMIFdwYjGaAMFtZd_QA1ZeUFWaHi6WZ3Q.woff2i7dMIFdwYjGaAMFtZd_QA1Z... https://spacenews.com/wp-content/cache/perfmatters/spacenews.com/fonts/i7dMIFdwYjGaAMFtZd_QA1ZeUFWaHi6WZ3Q.woff2 — 34.0 KiB — 143 ms — font-display: swaphttps://spacenews.com/wp-content/cache/perfmatters/spacenews.com/fonts/dFa6ZfeM_74wlPZtksIFajo6_V6LVlA.woff2dFa6ZfeM_74wlPZtksIFajo... https://spacenews.com/wp-content/cache/perfmatters/spacenews.com/fonts/dFa6ZfeM_74wlPZtksIFajo6_V6LVlA.woff2 — 17.1 KiB — 132 ms — font-display: swaphttps://spacenews.com/wp-content/plugins/newspack-plugin/dist/fonts/InterVariable.a0e477f2.woff2InterVariable.a0e477f2.... https://spacenews.com/wp-content/plugins/newspack-plugin/dist/fonts/InterVariable.a0e477f2.woff2 — 337.9 KiB — 383 ms — font-display: swaphttps://cdn2.niceboard.co/static-app/fonts/Inter/Inter-Bold.woff2Inter-Bold.woff2 https://cdn2.niceboard.co/static-app/fonts/Inter/Inter-Bold.woff2 — 104.0 KiB — 105 ms — font-display: swaphttps://cdn2.niceboard.co/static-app/fonts/Inter/Inter-Medium.woff2Inter-Medium.woff2 https://cdn2.niceboard.co/static-app/fonts/Inter/Inter-Medium.woff2 — 103.6 KiB — 104 ms — font-display: swaphttps://cdn2.niceboard.co/static-app/fonts/Inter/Inter-Regular.woff2Inter-Regular.woff2 https://cdn2.niceboard.co/static-app/fonts/Inter/Inter-Regular.woff2 — 96.9 KiB — 31 ms — font-display: swaphttps://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 33.9 KiB — 76 ms — font-display: swap
dFa5ZfeM_74wlPZtksIFYuU... woff2 swap
Size 17 KB
Load time 137 ms
Start 934 ms
Risk FOUT — text flashes from fallback to web font
i7dOIFdwYjGaAMFtZd_QA1Z... woff2 swap
Size 32 KB
Load time 187 ms
Start 934 ms
Risk FOUT — text flashes from fallback to web font
dFa5ZfeM_74wlPZtksIFYoE... woff2 swap
Size 17 KB
Load time 155 ms
Start 934 ms
Risk FOUT — text flashes from fallback to web font
i7dMIFdwYjGaAMFtZd_QA1Z... woff2 swap
Size 34 KB
Load time 143 ms
Start 935 ms
Risk FOUT — text flashes from fallback to web font
dFa6ZfeM_74wlPZtksIFajo... woff2 swap
Size 17 KB
Load time 132 ms
Start 935 ms
Risk FOUT — text flashes from fallback to web font
InterVariable.a0e477f2.... woff2 swap
Size 338 KB
Load time 383 ms
Start 935 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
Inter-Bold.woff2 woff2 swap
Size 104 KB
Load time 105 ms
Start 1.3 s
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
Inter-Medium.woff2 woff2 swap
Size 104 KB
Load time 104 ms
Start 1.3 s
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
Inter-Regular.woff2 woff2 swap
Size 97 KB
Load time 31 ms
Start 1.4 s
Risk FOUT — text flashes from fallback to web font
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 34 KB
Load time 76 ms
Start 1.6 s
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)

Fixing the unchecked items could save ~273 KB and ~546 ms

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
10 hints, 0 missing preconnects
PASS
10 hints, 0 missing preconnects
Info::
Page uses 10 resource hint(s)

Current Resource Hints

preconnect
3
preload
2
dns-prefetch
5
prefetch

10 resource hints configured

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=217 (3 minutes)
PASS
max-age=217 (3 minutes)
Info::
Cache-Control header is set
Got: max-age=217, must-revalidate
Info::
Effective TTL: 3 minutes (max-age=217)
Info::
Last-Modified header present
Cache-Control

max-age=217, must-revalidate

DirectiveValueMeaning
max-age217Cache for 3 minutes
must-revalidateMust recheck with server after expiry
Effective TTL: 217 seconds
Network Waterfall
133 requests over 4752ms
INFO
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s 18.0 s 20.0 s 22.0 s 24.0 s FCP 12.2 s LCP 24.1 shttps://spacenews.com// https://spacenews.com/ — 200 — 52.8 KiB — 426 ms — h2https://i0.wp.com/spacenews.com/wp-content/uploads/2025/10/spacenews_logo-crop25.webp?w=736&ssl=1i0.wp.com/spacenews.com/wp-content/... https://i0.wp.com/spacenews.com/wp-content/uploads/2025/10/spacenews_logo-crop25.webp?w=736&ssl=1 — 200 — 7.5 KiB — 42 ms — h2https://i0.wp.com/spacenews.com/wp-content/uploads/2026/04/Screenshot-2026-04-22-at-3.41.05-PM.png?resize=800%2C600&ssl=1i0.wp.com/spacenews.com/wp-content/... https://i0.wp.com/spacenews.com/wp-content/uploads/2026/04/Screenshot-2026-04-22-at-3.41.05-PM.png?resize=800%2C600&ssl=1 — 200 — 121.5 KiB — 45 ms — h2https://c0.wp.com/c/6.9.4/wp-includes/css/dist/block-library/style.min.cssc0.wp.com/c/6.9.4/wp-includes/css/d... https://c0.wp.com/c/6.9.4/wp-includes/css/dist/block-library/style.min.css — 200 — 16.1 KiB — 28 ms — h2https://spacenews.com/wp-content/plugins/newspack-blocks/dist/block_styles.css?ver=4.26.1/wp-content/plugins/newspack-blocks... https://spacenews.com/wp-content/plugins/newspack-blocks/dist/block_styles.css?ver=4.26.1 — 200 — 1.4 KiB — 136 ms — h2https://spacenews.com/wp-content/plugins/newspack-plugin/dist/newspack-ui.css?ver=6.37.0/wp-content/plugins/newspack-plugin... https://spacenews.com/wp-content/plugins/newspack-plugin/dist/newspack-ui.css?ver=6.37.0 — 200 — 12.0 KiB — 142 ms — h2https://spacenews.com/wp-content/plugins/newspack-newsletters/dist/subscriptions.css?ver=1776258121/wp-content/plugins/newspack-newsle... https://spacenews.com/wp-content/plugins/newspack-newsletters/dist/subscriptions.css?ver=1776258121 — 200 — 625 B — 132 ms — h2https://c0.wp.com/c/6.9.4/wp-includes/css/dist/components/style.min.cssc0.wp.com/c/6.9.4/wp-includes/css/d... https://c0.wp.com/c/6.9.4/wp-includes/css/dist/components/style.min.css — 200 — 14.9 KiB — 23 ms — h2https://spacenews.com/wp-content/plugins/newspack-plugin/dist/commons.css?ver=6.37.0/wp-content/plugins/newspack-plugin... https://spacenews.com/wp-content/plugins/newspack-plugin/dist/commons.css?ver=6.37.0 — 200 — 20.4 KiB — 177 ms — h2https://spacenews.com/wp-content/plugins/newspack-plugin/dist/reader-auth.css?ver=6.37.0/wp-content/plugins/newspack-plugin... https://spacenews.com/wp-content/plugins/newspack-plugin/dist/reader-auth.css?ver=6.37.0 — 200 — 1.0 KiB — 124 ms — h2https://spacenews.com/wp-content/plugins/newspack-plugin/dist/other-scripts/recaptcha.css?ver=6.37.0/wp-content/plugins/newspack-plugin... https://spacenews.com/wp-content/plugins/newspack-plugin/dist/other-scripts/recaptcha.css?ver=6.37.0 — 200 — 686 B — 140 ms — h2https://spacenews.com/wp-content/plugins/newspack-plugin/dist/reader-registration-block.css?ver=6.37.0/wp-content/plugins/newspack-plugin... https://spacenews.com/wp-content/plugins/newspack-plugin/dist/reader-registration-block.css?ver=6.37.0 — 200 — 1.8 KiB — 124 ms — h2https://spacenews.com/wp-content/plugins/newspack-plugin/dist/other-scripts/corrections.css?ver=6.37.0/wp-content/plugins/newspack-plugin... https://spacenews.com/wp-content/plugins/newspack-plugin/dist/other-scripts/corrections.css?ver=6.37.0 — 200 — 574 B — 129 ms — h2https://spacenews.com/wp-content/plugins/newspack-plugin/dist/content-gate-block-patterns.css?ver=6.37.0/wp-content/plugins/newspack-plugin... https://spacenews.com/wp-content/plugins/newspack-plugin/dist/content-gate-block-patterns.css?ver=6.37.0 — 200 — 1.2 KiB — 132 ms — h2https://spacenews.com/wp-content/plugins/newspack-popups/dist/view.css?ver=1776098773/wp-content/plugins/newspack-popups... https://spacenews.com/wp-content/plugins/newspack-popups/dist/view.css?ver=1776098773 — 200 — 2.2 KiB — 135 ms — h2https://spacenews.com/wp-content/themes/newspack-scott/style.css?ver=2.21.0/wp-content/themes/newspack-scott/s... 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https://www.youtube.com/s/_/ytembeds/_/ss/k=ytembeds.base.KjNKUXigSn8.L.W.O/am=AAAABA/d=0/br=1/rs=AGKMywEJITLW9kQSSYb_eVLtSgu_4tU6CQ — 200 — 45.3 KiB — 64 ms — h2https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2fonts.gstatic.com/s/roboto/v48/KFO7... https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 200 — 33.9 KiB — 76 ms — h3https://www.youtube.com/s/_/ytembeds/_/js/k=ytembeds.base.en_US.5f0apfZzpOA.2021.O/am=AAAABA/d=1/br=1/rs=AGKMywFg3MG1UeKh8ePjbhY_YEMv-NHjmA/m=root,basewww.youtube.com/s/_/ytembeds/_/js/k... https://www.youtube.com/s/_/ytembeds/_/js/k=ytembeds.base.en_US.5f0apfZzpOA.2021.O/am=AAAABA/d=1/br=1/rs=AGKMywFg3MG1UeKh8ePjbhY_YEMv-NHjmA/m=root,base — 200 — 140.1 KiB — 77 ms — h2https://www.youtube.com/s/player/1bb6ee63/player_embed_es6.vflset/en_US/base.jswww.youtube.com/s/player/1bb6ee63/p... https://www.youtube.com/s/player/1bb6ee63/player_embed_es6.vflset/en_US/base.js — 200 — 436.0 KiB — 110 ms — h2https://cdn.niceboard.co/boards/spacenewsjobs/companies/redwire-space-xwXyUtAq0V.pngcdn.niceboard.co/boards/spacenewsjo... https://cdn.niceboard.co/boards/spacenewsjobs/companies/redwire-space-xwXyUtAq0V.png — 200 — 10.3 KiB — 132 ms — h2https://apogee.spacenews.com/assets/53442861-32c9-4781-a9e6-8f5f4c2238c6.pngapogee.spacenews.com/assets/5344286... https://apogee.spacenews.com/assets/53442861-32c9-4781-a9e6-8f5f4c2238c6.png — 200 — 139.2 KiB — 95 ms — h2https://elevate.spacenews.com/zdisplay/177260.js?b=c819546,a1225273&bst_pagetype%5B%5D=is_home_page&bst_url=spacenews.com&kw=is_home_page%2Cis_landing_page%2Cnot_article_page%2Cis_home_page%2Cis_landing_page%2Cnot_article_page&skw=true&ts=1776899332298&domain=spacenews.com&path=%2F&url=https%3A%2F%2Fspacenews.com%2F&os=Android&browser=chrome&is_mobile=1&target=street-QIscxVgprv9ibocnelevate.spacenews.com/zdisplay/1772... 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HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
82% of JavaScript execution is third-party
First-party Third-party 1392ms · 227KB · $8/mo
Unattributable
Other
Costly
Execution 524ms
Transfer 0 KB
Monthly Cost $3/mo
Google Tag Manager
Tag Manager
Costly
Execution 243ms
Transfer 157 KB
Unused 40%
Monthly Cost $1/mo
elevate.spacenews.com
Other
Costly
Execution 226ms
Transfer 3 KB
Monthly Cost $1/mo
cdn2.niceboard.co
Other
Optional
Execution 178ms
Transfer 32 KB
Monthly Cost $1/mo
c0.wp.com
Other
Optional
Execution 126ms
Transfer 31 KB
Monthly Cost $1/mo
jobs.spacenews.com
Other
Optional
Execution 95ms
Transfer 4 KB
Monthly Cost $1/mo

These scripts may cost more than they're worth

  • Unattributable adds 524ms and costs ~$3/month
  • Google Tag Manager adds 243ms and costs ~$1/month
  • elevate.spacenews.com adds 226ms and costs ~$1/month

82% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

When third-party JS execution time exceeds your own, performance gains from frontend work are capped by code you don't own.

Learn more

Every millisecond of third-party JS competes with your own for main-thread time. If their share is bigger than yours, optimization on your code base barely moves the needle. Audit, defer, or remove third-parties before further frontend optimization. Use Lighthouse's third-party audit to identify the worst offenders.

Source: web.dev

Unattributable takes 524ms 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

Google Tag Manager takes 243ms 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

elevate.spacenews.com takes 226ms 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

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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