Consider code splitting or tree shaking to reduce unused code.
Why this matters
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.
Why this matters
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.
Why this matters
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.
Why this matters
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.
Why this matters
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
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
11 fonts (757 KB)
PASS
11 fonts (757 KB)
Info::
i
11 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
11
757 KB total
Render-blocking
0
of 11
Dominant font-display
swap
Most common across fonts
Font loading timeline
TransferFOIT (block)FOUT (swap)
GillSans.woffwoffswap
Size43 KB
Load time29 ms
Start379 ms
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
GillSans-LightItalic.woffwoffswap
Size56 KB
Load time175 ms
Start454 ms
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
GillSans-SemiBold.woffwoffswap
Size27 KB
Load time242 ms
Start455 ms
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
fa-solid-900.woff2woff2swap
Size147 KB
Load time293 ms
Start455 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
MinionPro-Regular.woffwoffswap
Size123 KB
Load time344 ms
Start455 ms
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
MinionPro-Medium.woffwoffswap
Size123 KB
Load time359 ms
Start456 ms
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
GillSans-Light.woffwoffswap
Size55 KB
Load time391 ms
Start456 ms
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
fa-brands-400.woff2woff2swap
Size108 KB
Load time423 ms
Start457 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
JTUHjIg1_i6t8kCHKm4532V...woff2swap
Size16 KB
Load time27 ms
Start457 ms
RiskFOUT — text flashes from fallback to web font
fa-regular-400.woff2woff2swap
Size24 KB
Load time22 ms
Start1.7 s
RiskFOUT — text flashes from fallback to web font
JTUSjIg1_i6t8kCHKm459Wl...woff2swap
Size35 KB
Load time33 ms
Start3.8 s
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)
Fixing the unchecked items could save ~378 KB and ~756 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
76 requests over 3866ms
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-party3204ms · 624KB · €17/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
Unattributable
Unattributable
Other
1145ms
0 KB
—
€6/mo
Costly
www.ugr.es
www.ugr.es
Other
586ms
85 KB
45%
€3/mo
Costly
www.ugr.es
www.ugr.es
Other
521ms
17 KB
—
€3/mo
Costly
chat.1millionbot.com
chat.1millionbot.com
Other
454ms
147 KB
46%
€2/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
196ms
156 KB
43%
€1/mo
Optional
Google Tag Manager
www.googletagmanager.com
Tag Manager
125ms
116 KB
54%
€1/mo
Optional
www.ugr.es
www.ugr.es
Other
61ms
3 KB
—
€0/mo
Optional
Google Analytics
www.google-analytics.com
Analytics
59ms
21 KB
—
€0/mo
Optional
www.ugr.es
www.ugr.es
Other
56ms
80 KB
—
€0/mo
Optional
Unattributable
Other
Costly
Execution1145ms
Transfer0 KB
Monthly Cost€6/mo
www.ugr.es
Other
Costly
Execution586ms
Transfer85 KB
Unused45%
Monthly Cost€3/mo
www.ugr.es
Other
Costly
Execution521ms
Transfer17 KB
Monthly Cost€3/mo
chat.1millionbot.com
Other
Costly
Execution454ms
Transfer147 KB
Unused46%
Monthly Cost€2/mo
Google Tag Manager
Tag Manager
Optional
Execution196ms
Transfer156 KB
Unused43%
Monthly Cost€1/mo
Google Tag Manager
Tag Manager
Optional
Execution125ms
Transfer116 KB
Unused54%
Monthly Cost€1/mo
www.ugr.es
Other
Optional
Execution61ms
Transfer3 KB
Monthly Cost€0/mo
Google Analytics
Analytics
Optional
Execution59ms
Transfer21 KB
Monthly Cost€0/mo
www.ugr.es
Other
Optional
Execution56ms
Transfer80 KB
Monthly Cost€0/mo
These scripts may cost more than they're worth
Unattributable adds 1145ms and costs ~€6/month
www.ugr.es adds 586ms and costs ~€3/month
www.ugr.es adds 521ms and costs ~€3/month
chat.1millionbot.com adds 454ms and costs ~€2/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 1145ms 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.ugr.es takes 586ms 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.ugr.es takes 521ms 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
chat.1millionbot.com takes 454ms 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
54% of Google Tag Manager'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.