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
19 images, 0 KB saveable
REVIEW
19 images, 0 KB saveable
Warning::
!
https://www.newswire.ca/content/dam/prnewswire/hom... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.newswire.ca/content/dam/prnewswire/hom... 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.
Warning::
!
https://www.newswire.ca/content/dam/prnewswire/hom... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.newswire.ca/content/dam/prnewswire/hom... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.newswire.ca/content/dam/prnewswire/hom... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.newswire.ca/content/dam/prnewswire/hom... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.newswire.ca/content/dam/prnewswire/hom... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.newswire.ca/content/dam/prnewswire/hom... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.newswire.ca/content/dam/prnewswire/hom... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.newswire.ca/content/dam/prnewswire/hom... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
19images590 KB
0oversized-0 KB
18legacy format
11missing 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
Performance issues directly impact user engagement and conversion rates.
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
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
4 fonts (82 KB)
PASS
4 fonts (82 KB)
Info::
i
4 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
4
82 KB total
Render-blocking
0
of 4
Dominant font-display
swap
Most common across fonts
Font loading timeline
TransferFOIT (block)FOUT (swap)
lwoff2swap
Size30 KB
Load time14 ms
Start518 ms
RiskFOUT — text flashes from fallback to web font
BlackTie-Regular-webfon...unknownswap
Size13 KB
Load time32 ms
Start518 ms
RiskFOUT — text flashes from fallback to web font
lwoff2swap
Size31 KB
Load time15 ms
Start519 ms
RiskFOUT — text flashes from fallback to web font
x-font-woff;charset=utf...woffswap
Size8 KB
Load time7 ms
Start1.3 s
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
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 ~6 KB and ~12 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
A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Network Waterfall
136 requests over 5312ms
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-party7792ms · 870KB · CA$108/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
fast.wistia.net
fast.wistia.net
Other
1557ms
159 KB
51%
CA$22/mo
Costly
fast.wistia.com
fast.wistia.com
Other
1257ms
147 KB
44%
CA$17/mo
Costly
Unattributable
Unattributable
Other
1112ms
0 KB
—
CA$15/mo
Costly
www.newswire.ca
www.newswire.ca
Other
592ms
6 KB
—
CA$8/mo
Costly
www.newswire.ca
www.newswire.ca
Other
550ms
2 KB
—
CA$8/mo
Costly
fast.wistia.com
fast.wistia.com
Other
470ms
55 KB
51%
CA$6/mo
Costly
www.newswire.ca
www.newswire.ca
Other
361ms
27 KB
—
CA$5/mo
Costly
www.newswire.ca
www.newswire.ca
Other
321ms
36 KB
—
CA$4/mo
Costly
assets.adobedtm.com
assets.adobedtm.com
Other
319ms
59 KB
—
CA$4/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
313ms
146 KB
44%
CA$4/mo
Costly
Microsoft Clarity
scripts.clarity.ms
Session Replay
272ms
26 KB
—
CA$4/mo
Costly
jsDelivr
cdn.jsdelivr.net
CDN
172ms
11 KB
—
CA$2/mo
Optional
LinkedIn Insight
snap.licdn.com
Advertising
130ms
19 KB
—
CA$2/mo
Optional
cookiechimp.com
cookiechimp.com
Other
113ms
0 KB
—
CA$2/mo
Optional
fast.wistia.com
fast.wistia.com
Other
72ms
42 KB
74%
CA$1/mo
Optional
www.newswire.ca
www.newswire.ca
Other
67ms
93 KB
—
CA$1/mo
Optional
code.jquery.com
code.jquery.com
Other
60ms
30 KB
75%
CA$1/mo
Optional
assets.adobedtm.com
assets.adobedtm.com
Other
52ms
12 KB
—
CA$1/mo
Optional
fast.wistia.net
Other
Costly
Execution1557ms
Transfer159 KB
Unused51%
Monthly CostCA$22/mo
fast.wistia.com
Other
Costly
Execution1257ms
Transfer147 KB
Unused44%
Monthly CostCA$17/mo
Unattributable
Other
Costly
Execution1112ms
Transfer0 KB
Monthly CostCA$15/mo
www.newswire.ca
Other
Costly
Execution592ms
Transfer6 KB
Monthly CostCA$8/mo
www.newswire.ca
Other
Costly
Execution550ms
Transfer2 KB
Monthly CostCA$8/mo
fast.wistia.com
Other
Costly
Execution470ms
Transfer55 KB
Unused51%
Monthly CostCA$6/mo
www.newswire.ca
Other
Costly
Execution361ms
Transfer27 KB
Monthly CostCA$5/mo
www.newswire.ca
Other
Costly
Execution321ms
Transfer36 KB
Monthly CostCA$4/mo
assets.adobedtm.com
Other
Costly
Execution319ms
Transfer59 KB
Monthly CostCA$4/mo
Google Tag Manager
Tag Manager
Costly
Execution313ms
Transfer146 KB
Unused44%
Monthly CostCA$4/mo
Microsoft Clarity
Session Replay
Costly
Execution272ms
Transfer26 KB
Monthly CostCA$4/mo
jsDelivr
CDN
Optional
Execution172ms
Transfer11 KB
Monthly CostCA$2/mo
LinkedIn Insight
Advertising
Optional
Execution130ms
Transfer19 KB
Monthly CostCA$2/mo
cookiechimp.com
Other
Optional
Execution113ms
Transfer0 KB
Monthly CostCA$2/mo
fast.wistia.com
Other
Optional
Execution72ms
Transfer42 KB
Unused74%
Monthly CostCA$1/mo
www.newswire.ca
Other
Optional
Execution67ms
Transfer93 KB
Monthly CostCA$1/mo
code.jquery.com
Other
Optional
Execution60ms
Transfer30 KB
Unused75%
Monthly CostCA$1/mo
assets.adobedtm.com
Other
Optional
Execution52ms
Transfer12 KB
Monthly CostCA$1/mo
These scripts may cost more than they're worth
fast.wistia.net adds 1557ms and costs ~CA$22/month
fast.wistia.com adds 1257ms and costs ~CA$17/month
Unattributable adds 1112ms and costs ~CA$15/month
www.newswire.ca adds 592ms and costs ~CA$8/month
www.newswire.ca adds 550ms and costs ~CA$8/month
fast.wistia.com adds 470ms and costs ~CA$6/month
www.newswire.ca adds 361ms and costs ~CA$5/month
www.newswire.ca adds 321ms and costs ~CA$4/month
assets.adobedtm.com adds 319ms and costs ~CA$4/month
Google Tag Manager adds 313ms and costs ~CA$4/month
Microsoft Clarity adds 272ms and costs ~CA$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
fast.wistia.net takes 1557ms 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
51% of fast.wistia.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
fast.wistia.com takes 1257ms 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 1112ms 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.newswire.ca takes 592ms 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.newswire.ca takes 550ms 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
fast.wistia.com takes 470ms 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
51% of fast.wistia.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
www.newswire.ca takes 361ms 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.newswire.ca takes 321ms 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
assets.adobedtm.com takes 319ms 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 313ms 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
Microsoft Clarity takes 272ms 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
74% of fast.wistia.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
75% of code.jquery.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.