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.
C
Image Optimization
Action
32 images, 0 KB saveable
REVIEW
32 images, 0 KB saveable
Warning::
!
https://www.turnitin.com/system/shared-assets/prod... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.turnitin.com/system/shared-assets/soci... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.turnitin.com/system/shared-assets/soci... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.turnitin.com/system/shared-assets/soci... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.turnitin.com/assets/images/turnitin-cl... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.turnitin.com/system/shared-assets/soci... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.turnitin.com/system/shared-assets/icon... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.turnitin.com/assets/images/contact-mob... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.turnitin.com/system/shared-assets/prod... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
32images5.1 MB
0oversized-0 KB
31legacy format
9missing 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
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
2 fonts (369 KB)
PASS
2 fonts (369 KB)
Info::
i
2 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
2
369 KB total
Render-blocking
0
of 2
Dominant font-display
swap
Most common across fonts
Font loading timeline
TransferFOIT (block)FOUT (swap)
K2F1fZFYk-dHSE0UPPuwQ5q...woff2swap
Size39 KB
Load time15 ms
Start799 ms
RiskFOUT — text flashes from fallback to web font
kJF1BvYX7BgnkSrUwT8Ohrd...woff2swap
Size330 KB
Load time33 ms
Start804 ms
RiskFOUT — 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
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 ~165 KB and ~330 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
No optimization needed
PASS
No optimization needed
Info::
✓
No resource hint issues
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
137 requests over 1989ms
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-party6088ms · 1584KB · $81/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
Unattributable
Unattributable
Other
1159ms
0 KB
—
$15/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
768ms
144 KB
46%
$10/mo
Costly
players.brightcove.net
players.brightcove.net
Other
638ms
225 KB
78%
$8/mo
Costly
OneTrust
cdn.cookielaw.org
Consent
564ms
130 KB
54%
$7/mo
Essential
Google Tag Manager
www.googletagmanager.com
Tag Manager
527ms
159 KB
40%
$7/mo
Costly
www.turnitin.com
www.turnitin.com
Other
508ms
17 KB
—
$7/mo
Costly
www.gstatic.com
www.gstatic.com
Other
383ms
362 KB
67%
$5/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
362ms
155 KB
41%
$5/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
295ms
146 KB
45%
$4/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
291ms
146 KB
45%
$4/mo
Costly
OneTrust
cdn.cookielaw.org
Consent
225ms
1 KB
—
$3/mo
Essential
www.turnitin.com
www.turnitin.com
Other
167ms
30 KB
—
$2/mo
Optional
OneTrust
cdn.cookielaw.org
Consent
85ms
9 KB
—
$1/mo
Essential
www.turnitin.com
www.turnitin.com
Other
61ms
23 KB
—
$1/mo
Optional
www.turnitin.com
www.turnitin.com
Other
57ms
37 KB
83%
$1/mo
Optional
Unattributable
Other
Costly
Execution1159ms
Transfer0 KB
Monthly Cost$15/mo
Google Tag Manager
Tag Manager
Costly
Execution768ms
Transfer144 KB
Unused46%
Monthly Cost$10/mo
players.brightcove.net
Other
Costly
Execution638ms
Transfer225 KB
Unused78%
Monthly Cost$8/mo
OneTrust
Consent
Essential
Execution564ms
Transfer130 KB
Unused54%
Monthly Cost$7/mo
Google Tag Manager
Tag Manager
Costly
Execution527ms
Transfer159 KB
Unused40%
Monthly Cost$7/mo
www.turnitin.com
Other
Costly
Execution508ms
Transfer17 KB
Monthly Cost$7/mo
www.gstatic.com
Other
Costly
Execution383ms
Transfer362 KB
Unused67%
Monthly Cost$5/mo
Google Tag Manager
Tag Manager
Costly
Execution362ms
Transfer155 KB
Unused41%
Monthly Cost$5/mo
Google Tag Manager
Tag Manager
Costly
Execution295ms
Transfer146 KB
Unused45%
Monthly Cost$4/mo
Google Tag Manager
Tag Manager
Costly
Execution291ms
Transfer146 KB
Unused45%
Monthly Cost$4/mo
OneTrust
Consent
Essential
Execution225ms
Transfer1 KB
Monthly Cost$3/mo
www.turnitin.com
Other
Optional
Execution167ms
Transfer30 KB
Monthly Cost$2/mo
OneTrust
Consent
Essential
Execution85ms
Transfer9 KB
Monthly Cost$1/mo
www.turnitin.com
Other
Optional
Execution61ms
Transfer23 KB
Monthly Cost$1/mo
www.turnitin.com
Other
Optional
Execution57ms
Transfer37 KB
Unused83%
Monthly Cost$1/mo
These scripts may cost more than they're worth
Unattributable adds 1159ms and costs ~$15/month
Google Tag Manager adds 768ms and costs ~$10/month
players.brightcove.net adds 638ms and costs ~$8/month
Google Tag Manager adds 527ms and costs ~$7/month
www.turnitin.com adds 508ms and costs ~$7/month
www.gstatic.com adds 383ms and costs ~$5/month
Google Tag Manager adds 362ms and costs ~$5/month
Google Tag Manager adds 295ms and costs ~$4/month
Google Tag Manager adds 291ms and costs ~$4/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
Unattributable takes 1159ms 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 768ms 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
players.brightcove.net takes 638ms 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
78% of players.brightcove.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
54% of OneTrust'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
Google Tag Manager takes 527ms 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.turnitin.com takes 508ms 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.gstatic.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
67% of www.gstatic.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
Google Tag Manager takes 362ms 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 295ms 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 291ms 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.turnitin.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.