JavaScript is 1.0 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.0 MB
Warning::
!
112 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
i
Estimated 0.37 g CO2 per page load
1.8 MBtransferred
112 requests
0.37 g CO2 per page load
JavaScript1.0 MiB56%
Images400.6 KiB22%
Other130.4 KiB7%
HTML85.7 KiB5%
Other69.9 KiB4%
Fonts58.0 KiB3%
CSS53.3 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
23 images, 0 KB saveable
REVIEW
23 images, 0 KB saveable
Warning::
!
https://www.digitalspy.com/_assets/design-tokens/d... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://hips.hearstapps.com/hmg-prod/images/a1930b... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://hips.hearstapps.com/hmg-prod/images/d52117... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://hips.hearstapps.com/hmg-prod/images/f45c42... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://hips.hearstapps.com/hmg-prod/images/7d8c80... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://hips.hearstapps.com/hmg-prod/images/caebce... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://hips.hearstapps.com/hmg-prod/images/ae6cbf... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://hips.hearstapps.com/hmg-prod/images/600562... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://hips.hearstapps.com/hmg-prod/images/986fdd... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://hips.hearstapps.com/hmg-prod/images/2fb6e6... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://hips.hearstapps.com/hmg-prod/images/cd9cee... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://hips.hearstapps.com/hmg-prod/images/six-fo... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://hips.hearstapps.com/hmg-prod/images/543957... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://hips.hearstapps.com/hmg-prod/images/e63f64... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://hips.hearstapps.com/hmg-prod/images/a49072... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://hips.hearstapps.com/vidthumb/787f3cf7-45f6... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://hips.hearstapps.com/hmg-prod/images/dee93e... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://hips.hearstapps.com/hmg-prod/images/a3a135... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://hips.hearstapps.com/hmg-prod/images/bfa23a... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://hips.hearstapps.com/hmg-prod/images/345eb0... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
23images401 KB
0oversized-0 KB
1legacy format
21missing dimensionsCLS 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
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
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
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
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
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
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
Performance issues directly impact user engagement and conversion rates.
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
3 fonts (58 KB)
PASS
3 fonts (58 KB)
Info::
i
3 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
3
58 KB total
Render-blocking
0
of 3
Dominant font-display
swap
Most common across fonts
Font loading timeline
TransferFOIT (block)FOUT (swap)
Montserrat-Black.29dbbe...woff2swap
Size19 KB
Load time31 ms
Start152 ms
RiskFOUT — text flashes from fallback to web font
Montserrat-Bold.1159bd6...woff2swap
Size20 KB
Load time23 ms
Start289 ms
RiskFOUT — text flashes from fallback to web font
LeagueMono-Light.40f9e9...woff2swap
Size19 KB
Load time14 ms
Start289 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
2 hints, 0 missing preconnects
PASS
2 hints, 0 missing preconnects
Info::
✓
Page uses 2 resource hint(s)
Current Resource Hints
preconnect—
preload
1
dns-prefetch—
prefetch
1
2 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
112 requests over 1365ms
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-party4010ms · 608KB · £69/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
www.digitalspy.com
www.digitalspy.com
Other
1102ms
86 KB
—
£19/mo
Costly
Unattributable
Unattributable
Other
727ms
0 KB
—
£13/mo
Costly
www.digitalspy.com
www.digitalspy.com
Other
700ms
15 KB
—
£12/mo
Costly
www.digitalspy.com
www.digitalspy.com
Other
440ms
14 KB
—
£8/mo
Costly
www.digitalspy.com
www.digitalspy.com
Other
383ms
7 KB
—
£7/mo
Costly
securepubads.g.doubleclick.net
securepubads.g.doubleclick.net
Other
156ms
188 KB
76%
£3/mo
Optional
www.digitalspy.com
www.digitalspy.com
Other
116ms
108 KB
79%
£2/mo
Optional
www.digitalspy.com
www.digitalspy.com
Other
96ms
53 KB
90%
£2/mo
Optional
www.digitalspy.com
www.digitalspy.com
Other
85ms
4 KB
—
£1/mo
Optional
securepubads.g.doubleclick.net
securepubads.g.doubleclick.net
Other
75ms
34 KB
—
£1/mo
Optional
www.digitalspy.com
www.digitalspy.com
Other
65ms
58 KB
83%
£1/mo
Optional
www.digitalspy.com
www.digitalspy.com
Other
64ms
42 KB
56%
£1/mo
Optional
www.digitalspy.com
Other
Costly
Execution1102ms
Transfer86 KB
Monthly Cost£19/mo
Unattributable
Other
Costly
Execution727ms
Transfer0 KB
Monthly Cost£13/mo
www.digitalspy.com
Other
Costly
Execution700ms
Transfer15 KB
Monthly Cost£12/mo
www.digitalspy.com
Other
Costly
Execution440ms
Transfer14 KB
Monthly Cost£8/mo
www.digitalspy.com
Other
Costly
Execution383ms
Transfer7 KB
Monthly Cost£7/mo
securepubads.g.doubleclick.net
Other
Optional
Execution156ms
Transfer188 KB
Unused76%
Monthly Cost£3/mo
www.digitalspy.com
Other
Optional
Execution116ms
Transfer108 KB
Unused79%
Monthly Cost£2/mo
www.digitalspy.com
Other
Optional
Execution96ms
Transfer53 KB
Unused90%
Monthly Cost£2/mo
www.digitalspy.com
Other
Optional
Execution85ms
Transfer4 KB
Monthly Cost£1/mo
securepubads.g.doubleclick.net
Other
Optional
Execution75ms
Transfer34 KB
Monthly Cost£1/mo
www.digitalspy.com
Other
Optional
Execution65ms
Transfer58 KB
Unused83%
Monthly Cost£1/mo
www.digitalspy.com
Other
Optional
Execution64ms
Transfer42 KB
Unused56%
Monthly Cost£1/mo
These scripts may cost more than they're worth
www.digitalspy.com adds 1102ms and costs ~£19/month
Unattributable adds 727ms and costs ~£13/month
www.digitalspy.com adds 700ms and costs ~£12/month
www.digitalspy.com adds 440ms and costs ~£8/month
www.digitalspy.com adds 383ms and costs ~£7/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.digitalspy.com takes 1102ms 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 727ms 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.digitalspy.com takes 700ms 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.digitalspy.com takes 440ms 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.digitalspy.com takes 383ms 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
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.digitalspy.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
90% of www.digitalspy.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
83% of www.digitalspy.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.digitalspy.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.