JavaScript is 967 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 967 KB
Warning::
!
103 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
i
Estimated 0.39 g CO2 per page load
1.9 MBtransferred
103 requests
0.39 g CO2 per page load
JavaScript967.2 KiB51%
Images367.9 KiB19%
Other203.9 KiB11%
HTML115.2 KiB6%
Fonts112.3 KiB6%
CSS83.1 KiB4%
Other56.3 KiB3%
Other0 B0%
02.4 MB4.9 MB
Approaching limit
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
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
B
Image Optimization
18 images, 0 KB saveable
REVIEW
18 images, 0 KB saveable
Info::
✓
All images are well-optimized
18images368 KB
0oversized-0 KB
8legacy format
0missing dimensionsCLS risk
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW
Green Hosting
No green hosting detected
B
HTTP Caching
max-age=0, must-revalidate, private
REVIEW
max-age=0, must-revalidate, private
Info::
✓
Cache-Control header is set
Got: max-age=0, must-revalidate, private
Info::
i
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control
max-age=0, must-revalidate, private
Directive
Value
Meaning
max-age
0
Cache for 0 seconds
must-revalidate
—
Must recheck with server after expiry
private
—
Only browser cache, not CDN/proxy
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
6 fonts (112 KB)
PASS
6 fonts (112 KB)
Info::
i
6 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
6
112 KB total
Render-blocking
0
of 6
Dominant font-display
swap
Most common across fonts
Font loading timeline
TransferFOIT (block)FOUT (swap)
inter-v3-latin-700.8b80...woff2swap
Size18 KB
Load time14 ms
Start248 ms
RiskFOUT — text flashes from fallback to web font
Barlow-Semi-Condensed-6...woff2swap
Size16 KB
Load time14 ms
Start250 ms
RiskFOUT — text flashes from fallback to web font
barlow-semi-condensed-8...woff2swap
Size16 KB
Load time15 ms
Start250 ms
RiskFOUT — text flashes from fallback to web font
Barlow-Semi-Condensed-4...woff2swap
Size16 KB
Load time18 ms
Start252 ms
RiskFOUT — text flashes from fallback to web font
Shippori-Mincho-800.3ba...woff2swap
Size28 KB
Load time14 ms
Start252 ms
RiskFOUT — text flashes from fallback to web font
inter-v3-latin-regular....woff2swap
Size17 KB
Load time18 ms
Start253 ms
RiskFOUT — 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+
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
1 hints, 0 missing preconnects
PASS
1 hints, 0 missing preconnects
Info::
✓
Page uses 1 resource hint(s)
Current Resource Hints
preconnect—
preload—
dns-prefetch—
prefetch
1
1 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
Network Waterfall
103 requests over 2066ms
INFO
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
100%of JavaScript execution is third-party
First-party Third-party4516ms · 696KB · $85/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
www.goodhousekeeping.com
www.goodhousekeeping.com
Other
846ms
14 KB
—
$16/mo
Costly
Unattributable
Unattributable
Other
791ms
0 KB
—
$15/mo
Costly
www.goodhousekeeping.com
www.goodhousekeeping.com
Other
788ms
8 KB
—
$15/mo
Costly
www.goodhousekeeping.com
www.goodhousekeeping.com
Other
585ms
115 KB
—
$11/mo
Costly
www.goodhousekeeping.com
www.goodhousekeeping.com
Other
457ms
9 KB
—
$9/mo
Costly
www.goodhousekeeping.com
www.goodhousekeeping.com
Other
261ms
58 KB
83%
$5/mo
Costly
securepubads.g.doubleclick.net
securepubads.g.doubleclick.net
Other
172ms
188 KB
76%
$3/mo
Optional
www.goodhousekeeping.com
www.goodhousekeeping.com
Other
119ms
7 KB
—
$2/mo
Optional
www.goodhousekeeping.com
www.goodhousekeeping.com
Other
116ms
108 KB
79%
$2/mo
Optional
www.goodhousekeeping.com
www.goodhousekeeping.com
Other
110ms
53 KB
89%
$2/mo
Optional
www.goodhousekeeping.com
www.goodhousekeeping.com
Other
81ms
42 KB
56%
$2/mo
Optional
securepubads.g.doubleclick.net
securepubads.g.doubleclick.net
Other
73ms
34 KB
—
$1/mo
Optional
www.goodhousekeeping.com
www.goodhousekeeping.com
Other
66ms
43 KB
55%
$1/mo
Optional
nexus.ensighten.com
nexus.ensighten.com
Other
52ms
19 KB
—
$1/mo
Optional
www.goodhousekeeping.com
Other
Costly
Execution846ms
Transfer14 KB
Monthly Cost$16/mo
Unattributable
Other
Costly
Execution791ms
Transfer0 KB
Monthly Cost$15/mo
www.goodhousekeeping.com
Other
Costly
Execution788ms
Transfer8 KB
Monthly Cost$15/mo
www.goodhousekeeping.com
Other
Costly
Execution585ms
Transfer115 KB
Monthly Cost$11/mo
www.goodhousekeeping.com
Other
Costly
Execution457ms
Transfer9 KB
Monthly Cost$9/mo
www.goodhousekeeping.com
Other
Costly
Execution261ms
Transfer58 KB
Unused83%
Monthly Cost$5/mo
securepubads.g.doubleclick.net
Other
Optional
Execution172ms
Transfer188 KB
Unused76%
Monthly Cost$3/mo
www.goodhousekeeping.com
Other
Optional
Execution119ms
Transfer7 KB
Monthly Cost$2/mo
www.goodhousekeeping.com
Other
Optional
Execution116ms
Transfer108 KB
Unused79%
Monthly Cost$2/mo
www.goodhousekeeping.com
Other
Optional
Execution110ms
Transfer53 KB
Unused89%
Monthly Cost$2/mo
www.goodhousekeeping.com
Other
Optional
Execution81ms
Transfer42 KB
Unused56%
Monthly Cost$2/mo
securepubads.g.doubleclick.net
Other
Optional
Execution73ms
Transfer34 KB
Monthly Cost$1/mo
www.goodhousekeeping.com
Other
Optional
Execution66ms
Transfer43 KB
Unused55%
Monthly Cost$1/mo
nexus.ensighten.com
Other
Optional
Execution52ms
Transfer19 KB
Monthly Cost$1/mo
These scripts may cost more than they're worth
www.goodhousekeeping.com adds 846ms and costs ~$16/month
Unattributable adds 791ms and costs ~$15/month
www.goodhousekeeping.com adds 788ms and costs ~$15/month
www.goodhousekeeping.com adds 585ms and costs ~$11/month
www.goodhousekeeping.com adds 457ms and costs ~$9/month
www.goodhousekeeping.com adds 261ms and costs ~$5/month
100% 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
www.goodhousekeeping.com takes 846ms 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
Unattributable takes 791ms 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
www.goodhousekeeping.com takes 788ms 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
www.goodhousekeeping.com takes 585ms 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
www.goodhousekeeping.com takes 457ms 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
www.goodhousekeeping.com takes 261ms 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
83% of www.goodhousekeeping.com's code is unused. The script may be loading features you don't use.
Why this matters
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
76% of securepubads.g.doubleclick.net's code is unused. The script may be loading features you don't use.
Why this matters
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
79% of www.goodhousekeeping.com's code is unused. The script may be loading features you don't use.
Why this matters
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
89% of www.goodhousekeeping.com's code is unused. The script may be loading features you don't use.
Why this matters
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
56% of www.goodhousekeeping.com's code is unused. The script may be loading features you don't use.
Why this matters
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
55% of www.goodhousekeeping.com's code is unused. The script may be loading features you don't use.
Why this matters
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.