Performance
· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
2.40 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
3.99 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
2.52 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.095
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
4.79 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.
20.08 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 sFPage Weight BudgetAction3.0 MB transferred, 167 requestsFIX
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
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.
Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).
Source: web.dev font loading
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.
Source: web.dev
DThird-Party ImpactAction99% third-party, 0 ms blockingFIX
FJS Execution CostAction8057ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 1442ms | 170ms | 0ms | 3rd |
| https://muckrack.com/ | 892ms | 149ms | 20ms | 1st |
| https://cdn.muckrack.com/static/bundles/1306.2e700f21.js | 873ms | 442ms | 8ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-K3JWW8V | 603ms | 515ms | 68ms | 3rd |
| https://scripts.clarity.ms/0.8.59/clarity.js | 552ms | 434ms | 11ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-ZYMTC2HCWN&cx=c>m=4e64h1h1 | 416ms | 346ms | 65ms | 3rd |
| https://www.googletagmanager.com/gtag/destination?id=AW-1014608050&cx=c>m=4e64h1h1 | 389ms | 248ms | 59ms | 3rd |
| https://js.qualified.com/qualified.js?token=QCpwbhBMaAgaarau | 383ms | 309ms | 50ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-703231348&cx=c>m=4e64h1h1 | 379ms | 315ms | 60ms | 3rd |
| https://cdn.muckrack.com/static/bundles/front_rebrand.d93ed523.js | 331ms | 313ms | 0ms | 3rd |
Showing top 10 of 20 scripts
FJS BundlesAction59 scripts, 547 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=G-ZYMTC2HCWN&cx=c>m=4e64h1h1 | 174 KB | 66 KB (38%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-K3JWW8V | 163 KB | 63 KB (39%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/destination?id=AW-1014608050&cx=c>m=4e64h1h1 | 134 KB | 60 KB (45%) | ✓ | 3rd |
| https://js.qualified.com/qualified.js?token=QCpwbhBMaAgaarau | 117 KB | 58 KB (49%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-703231348&cx=c>m=4e64h1h1 | 147 KB | 55 KB (38%) | ✓ | 3rd |
| https://go.muckrack.com/js/forms2/js/forms2.min.js | 68 KB | 52 KB (77%) | ✓ | 3rd |
| https://cdn.cookielaw.org/scripttemplates/202307.1.0/otBannerSdk.js | 98 KB | 51 KB (52%) | ✓ | 3rd |
| https://js.qualified.com/packs/js/multimodal_v2-3fbc98a7.js | 97 KB | 50 KB (52%) | ✓ | 3rd |
| https://connect.facebook.net/en_US/fbevents.js | 97 KB | 34 KB (35%) | ✓ | 3rd |
| https://e.muckrack.com/static/array.js | 67 KB | 32 KB (49%) | ✓ | 3rd |
Consider code splitting or tree shaking to reduce unused code.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
Consider code splitting or tree shaking to reduce unused code.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
Consider code splitting or tree shaking to reduce unused code.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
Consider code splitting or tree shaking to reduce unused code.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
Consider code splitting or tree shaking to reduce unused code.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
FPage Weight InventoryAction167 resources · 3.0 MB · 547 KB savings availableFIX
~546.7 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 167 resources | 3.0 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction54 images, 0 KB saveableREVIEW
Set explicit width and height to prevent CLS.
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.
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.
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.
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.
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.
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.
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.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
A+Text CompressionAll text resources are compressedPASS
A+Font Loading8 fonts (311 KB)PASS
Web fonts
8
311 KB total
Render-blocking
0
of 8
Dominant font-display
swap
Most common across fonts
Font loading timeline
- 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 ~52 KB and ~104 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Network Waterfall167 requests over 4626msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 1442ms | 0 KB | — | $19/mo | Costly |
cdn.muckrack.com cdn.muckrack.com | Other | 873ms | 20 KB | — | $12/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 603ms | 163 KB | 39% | $8/mo | Costly |
Microsoft Clarity scripts.clarity.ms | Session Replay | 552ms | 26 KB | — | $7/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 416ms | 174 KB | 38% | $6/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 389ms | 134 KB | 45% | $5/mo | Costly |
js.qualified.com js.qualified.com | Other | 383ms | 117 KB | 49% | $5/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 379ms | 147 KB | 38% | $5/mo | Costly |
cdn.muckrack.com cdn.muckrack.com | Other | 331ms | 1 KB | — | $4/mo | Costly |
OneTrust cdn.cookielaw.org | Consent | 307ms | 98 KB | 52% | $4/mo | Essential |
e.muckrack.com e.muckrack.com | Other | 211ms | 67 KB | 49% | $3/mo | Costly |
js.qualified.com js.qualified.com | Other | 199ms | 97 KB | 52% | $3/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 178ms | 45 KB | — | $2/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 166ms | 97 KB | 35% | $2/mo | Optional |
js.navattic.com js.navattic.com | Other | 134ms | 11 KB | — | $2/mo | Optional |
go.muckrack.com go.muckrack.com | Other | 129ms | 68 KB | 77% | $2/mo | Optional |
OneTrust cdn.cookielaw.org | Consent | 76ms | 9 KB | — | $1/mo | Essential |
LinkedIn Insight snap.licdn.com | Advertising | 66ms | 19 KB | — | $1/mo | Optional |
These scripts may cost more than they're worth
- Unattributable adds 1442ms and costs ~$19/month
- cdn.muckrack.com adds 873ms and costs ~$12/month
- Google Tag Manager adds 603ms and costs ~$8/month
- Microsoft Clarity adds 552ms and costs ~$7/month
- Google Tag Manager adds 416ms and costs ~$6/month
- Google Tag Manager adds 389ms and costs ~$5/month
- js.qualified.com adds 383ms and costs ~$5/month
- Google Tag Manager adds 379ms and costs ~$5/month
- cdn.muckrack.com adds 331ms and costs ~$4/month
- e.muckrack.com adds 211ms and costs ~$3/month
85% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.
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 1442ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
cdn.muckrack.com takes 873ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Google Tag Manager takes 603ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Microsoft Clarity takes 552ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Google Tag Manager takes 416ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Google Tag Manager takes 389ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
js.qualified.com takes 383ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Google Tag Manager takes 379ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
cdn.muckrack.com takes 331ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
52% of OneTrust's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
e.muckrack.com takes 211ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
52% of js.qualified.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
77% of go.muckrack.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev