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Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
80
GRADE
B
FIX
2
REVIEW
6
PASS
5
INFO
2

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

Mobile Desktop
96
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
96
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
100
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

879 ms

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

1.21 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

66 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.004

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

882 ms

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

2.38 s

Page Load Progression

375 ms
750 ms
1.1 s
1.5 s
1.9 s
2.2 s
2.6 s
3.0 s
Checks
15
5 PASS 6 REVIEW 2 FIX
D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (1.1 MiB of 1.1 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
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.

B
Page Weight Budget
1.1 MB transferred, 59 requests
REVIEW
1.1 MB transferred, 59 requests
Info::
Page weighs 2.5 MB (1.1 MB transferred)
Warning::
JavaScript is 565 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 565 KB
Info::
59 HTTP requests
Info::
Estimated 0.24 g CO2 per page load
1.1 MB / 2.4 MB budget
1.1 MB transferred
59 requests
0.24 g CO2 per page load
JavaScript 564.9 KiB 48%
Images 349.3 KiB 30%
Fonts 127.6 KiB 11%
CSS 108.8 KiB 9%
HTML 9.1 KiB 1%
Other 4.5 KiB 0%
Other 681 B 0%
Other 651 B 0%
Other 449 B 0%
0 2.4 MB 4.9 MB
Under budget

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

C
Image Optimization
Action
13 images, 0 KB saveable
REVIEW
13 images, 0 KB saveable
Warning::
https://www.ubc.ca/_cache/images/25979-suzanne_sim... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.ubc.ca/_cache/images/25983-bee_on_flow... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.ubc.ca/_cache/images/25993-researchers... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.ubc.ca/_cache/images/26023-three_femal... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.ubc.ca/_cache/images/26008-damaged_bri... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.ubc.ca/_cache/images/25988-lind_galler... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.ubc.ca/_cache/images/26018-push_forwar... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.ubc.ca/_cache/images/26013-holding_reu... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.ubc.ca/_cache/images/26003-blowing_nos... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.ubc.ca/_cache/images/25998-lexis_ly-37... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
13 images 349 KB
0 oversized -0 KB
13 legacy format
10 missing dimensions CLS 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

B
JS Execution Cost
663ms total JS execution
REVIEW
663ms total JS execution
Info::
https://www.ubc.ca/: 183ms CPU time
Info::
https://www.googletagmanager.com/gtag/js?id=G-Q74J...: 125ms CPU time
Info::
Unattributable: 117ms CPU time
Info::
https://www.googletagmanager.com/gtm.js?id=GTM-PGP...: 112ms CPU time
Info::
https://www.googletagmanager.com/gtag/js?id=DC-834...: 70ms CPU time
Warning::
Third-party scripts: 663ms (100% of total)

Main Thread Breakdown

Script Evaluation 48% Other 23% Style & Layout 15% Script Parsing & Compilation 8% Rendering 5%
ScriptTotalScriptingParse/CompileParty
https://www.ubc.ca/183ms2ms1ms3rd
https://www.googletagmanager.com/gtag/js?id=G-Q74JQJCYJK&cx=c&gtm=4e64h1125ms98ms26ms3rd
Unattributable117ms3ms0ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-PGPCK4W112ms97ms13ms3rd
https://www.googletagmanager.com/gtag/js?id=DC-8341020&cx=c&gtm=4e64h170ms59ms11ms3rd
https://sc-static.net/scevent.min.js56ms48ms5ms3rd
C
JS Bundles
Action
14 scripts, 184 KB unused
REVIEW
14 scripts, 184 KB unused
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-PGP...: 65 KB unused (41%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-Q74J...: 63 KB unused (41%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=DC-834...: 57 KB unused (44%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 184 KB
184 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtm.js?id=GTM-PGPCK4W159 KB65 KB (41%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-Q74JQJCYJK&cx=c&gtm=4e64h1153 KB63 KB (41%)✓3rd
https://www.googletagmanager.com/gtag/js?id=DC-8341020&cx=c&gtm=4e64h1129 KB57 KB (44%)✓3rd
https://www.ubc.ca/_assets/js/script.min.js?21 KB—✓3rd
https://www.google-analytics.com/analytics.js21 KB—✓3rd
https://cdn.ubc.ca/clf/globalutility/index.js?callback=clfCallback&_=17767994999232 KB—✓3rd
https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js34 KB—✓3rd
https://cdn.ubc.ca/clf/7.0.5/js/ubc-clf.min.js4 KB—✓3rd
https://sc-static.net/scevent.min.js25 KB—✓3rd
https://cdn-akamai.mookie1.com/LB/LightningBolt.js7 KB—✓3rd

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

B
Page Weight Inventory
59 resources · 1.1 MB · 184 KB savings available
REVIEW
59 resources · 1.1 MB · 184 KB savings available
Warning::
Page weight 142 KB over 1MB target
Got: 1.1 MB Expected: ≤ 1 MB
Info::
~184 KB of savings available
Warning::
58 third-party resources (100% of weight)
59 resources · 1.1 MiB · 58 third-party 142.0 KiB over 1MB target
JavaScript 48% · 564.9 KiB
Image 30% · 351.1 KiB
Font 11% · 127.6 KiB
CSS 9% · 108.8 KiB
Document 1% · 10.4 KiB
Other 0% · 3.1 KiB

~184.5 KiB of savings available

Remove unused JavaScript: 184.5 KiB
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
7 fonts (128 KB)
PASS
7 fonts (128 KB)
Info::
7 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

7

128 KB total

Render-blocking

0

of 7

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s FCP 879 ms LCP 1.2 sdata:application/x-font-woff;base64,d09GRk9UVE8AAD7LAA0AAAAAbmAAAQAAAAA8oAAAAisAAAaRAAAAAAAAAABDRkY…x-font-woff;base64,d09G... data:application/x-font-woff;base64,d09GRk9UVE8AAD7LAA0AAAAAbmAAAQAAAAA8oAAAAisAAAaRAAAAAAAAAABDRkY… — 15.7 KiB — 92 ms — font-display: swapdata:application/x-font-woff;base64,d09GRk9UVE8AAECKAA0AAAAAbsQAAQAAAAA+YAAAAioAAAaRAAAAAAAAAABDRkY…x-font-woff;base64,d09G... data:application/x-font-woff;base64,d09GRk9UVE8AAECKAA0AAAAAbsQAAQAAAAA+YAAAAioAAAaRAAAAAAAAAABDRkY… — 16.1 KiB — 93 ms — font-display: swapdata:application/x-font-woff;base64,d09GRk9UVE8AAD+DAA0AAAAAb3AAAQAAAAA9WAAAAisAAAaRAAAAAAAAAABDRkY…x-font-woff;base64,d09G... data:application/x-font-woff;base64,d09GRk9UVE8AAD+DAA0AAAAAb3AAAQAAAAA9WAAAAisAAAaRAAAAAAAAAABDRkY… — 15.9 KiB — 103 ms — font-display: swapdata:application/x-font-woff;base64,d09GRk9UVE8AABv3AAsAAAAAJxQAAQAAAAAZzAAAAisAAAaRAAAAAAAAAABDRkY…x-font-woff;base64,d09G... data:application/x-font-woff;base64,d09GRk9UVE8AABv3AAsAAAAAJxQAAQAAAAAZzAAAAisAAAaRAAAAAAAAAABDRkY… — 7.0 KiB — 99 ms — font-display: swapdata:application/x-font-woff;base64,d09GRk9UVE8AABuKAAsAAAAAJegAAQAAAAAZYAAAAioAAAaRAAAAAAAAAABDRkY…x-font-woff;base64,d09G... data:application/x-font-woff;base64,d09GRk9UVE8AABuKAAsAAAAAJegAAQAAAAAZYAAAAioAAAaRAAAAAAAAAABDRkY… — 6.9 KiB — 80 ms — font-display: swapdata:application/x-font-woff;base64,d09GRk9UVE8AABwPAAsAAAAAJygAAQAAAAAZ5AAAAisAAAaRAAAAAAAAAABDRkY…x-font-woff;base64,d09G... data:application/x-font-woff;base64,d09GRk9UVE8AABwPAAsAAAAAJygAAQAAAAAZ5AAAAisAAAaRAAAAAAAAAABDRkY… — 7.0 KiB — 71 ms — font-display: swaphttps://cdn.ubc.ca/clf/7.0.5/font/font-v4/fontawesome-webfont-ubc-v4.ttffontawesome-webfont-ubc... https://cdn.ubc.ca/clf/7.0.5/font/font-v4/fontawesome-webfont-ubc-v4.ttf — 59.0 KiB — 37 ms — font-display: swap
x-font-woff;base64,d09G... woff swap
Size 16 KB
Load time 92 ms
Start 423 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
x-font-woff;base64,d09G... woff swap
Size 16 KB
Load time 93 ms
Start 424 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
x-font-woff;base64,d09G... woff swap
Size 16 KB
Load time 103 ms
Start 424 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
x-font-woff;base64,d09G... woff swap
Size 7 KB
Load time 99 ms
Start 433 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
x-font-woff;base64,d09G... woff swap
Size 7 KB
Load time 80 ms
Start 454 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
x-font-woff;base64,d09G... woff swap
Size 7 KB
Load time 71 ms
Start 464 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
fontawesome-webfont-ubc... ttf swap
Size 59 KB
Load time 37 ms
Start 476 ms
Risk FOUT — 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 ~38 KB and ~76 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
Network Waterfall
59 requests over 1458ms
INFO
0 ms 500 ms 1.0 s 1.5 s FCP 879 ms LCP 1.2 shttps://ubc.ca// https://ubc.ca/ — 301 — 82 B — 252 ms — h2https://www.ubc.ca/www.ubc.ca/ https://www.ubc.ca/ — 200 — 6.6 KiB — 33 ms — h2https://cdn.ubc.ca/clf/7.0.5/css/ubc-clf-full-bw.min.csscdn.ubc.ca/clf/7.0.5/css/ubc-clf-fu... https://cdn.ubc.ca/clf/7.0.5/css/ubc-clf-full-bw.min.css — 200 — 34.7 KiB — 63 ms — h2https://cloud.typography.com/6804272/781004/css/fonts.csscloud.typography.com/6804272/781004... https://cloud.typography.com/6804272/781004/css/fonts.css — 302 — 414 B — 76 ms — http/1.1https://www.ubc.ca/_assets/css/style.min.css?11www.ubc.ca/_assets/css/style.min.cs... https://www.ubc.ca/_assets/css/style.min.css?11 — 200 — 7.8 KiB — 11 ms — h2https://www.ubc.ca/_cache/images/25979-suzanne_simard-1920x700_1x.jpgwww.ubc.ca/_cache/images/25979-suza... https://www.ubc.ca/_cache/images/25979-suzanne_simard-1920x700_1x.jpg — 200 — 91.6 KiB — 23 ms — h2https://www.ubc.ca/_cache/images/25983-bee_on_flower-370x370_1x.jpgwww.ubc.ca/_cache/images/25983-bee_... https://www.ubc.ca/_cache/images/25983-bee_on_flower-370x370_1x.jpg — 200 — 32.7 KiB — 17 ms — h2https://www.ubc.ca/_cache/images/25988-lind_gallery-370x370_1x.jpgwww.ubc.ca/_cache/images/25988-lind... https://www.ubc.ca/_cache/images/25988-lind_gallery-370x370_1x.jpg — 200 — 27.5 KiB — 9 ms — h2https://www.ubc.ca/_cache/images/25993-researchers-370x370_1x-1.jpgwww.ubc.ca/_cache/images/25993-rese... https://www.ubc.ca/_cache/images/25993-researchers-370x370_1x-1.jpg — 200 — 30.7 KiB — 10 ms — h2https://www.ubc.ca/_cache/images/26023-three_female_researchers-370x370_1x.jpgwww.ubc.ca/_cache/images/26023-thre... https://www.ubc.ca/_cache/images/26023-three_female_researchers-370x370_1x.jpg — 200 — 29.6 KiB — 14 ms — h2https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.jsajax.googleapis.com/ajax/libs/jquer... https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js — 200 — 33.8 KiB — 40 ms — h2https://cdn.ubc.ca/clf/7.0.5/js/ubc-clf.min.jscdn.ubc.ca/clf/7.0.5/js/ubc-clf.min... https://cdn.ubc.ca/clf/7.0.5/js/ubc-clf.min.js — 200 — 4.2 KiB — 11 ms — h2https://www.ubc.ca/_assets/js/script.min.js?2www.ubc.ca/_assets/js/script.min.js... https://www.ubc.ca/_assets/js/script.min.js?2 — 200 — 1.3 KiB — 11 ms — h2https://cdn.ubc.ca/fonts/203149/4C28AD4CD63BAC2DD.csscdn.ubc.ca/fonts/203149/4C28AD4CD63... https://cdn.ubc.ca/fonts/203149/4C28AD4CD63BAC2DD.css — 200 — 66.4 KiB — 7 ms — h2https://www.ubc.ca/_cache/images/26018-push_forward_wildfire-370x370_1x.jpgwww.ubc.ca/_cache/images/26018-push... https://www.ubc.ca/_cache/images/26018-push_forward_wildfire-370x370_1x.jpg — 200 — 17.1 KiB — 14 ms — h2https://www.ubc.ca/_cache/images/26013-holding_reusable_cup-370x370_1x.jpgwww.ubc.ca/_cache/images/26013-hold... https://www.ubc.ca/_cache/images/26013-holding_reusable_cup-370x370_1x.jpg — 200 — 17.2 KiB — 11 ms — h2https://www.ubc.ca/_cache/images/26008-damaged_bridge-370x370_1x.jpgwww.ubc.ca/_cache/images/26008-dama... https://www.ubc.ca/_cache/images/26008-damaged_bridge-370x370_1x.jpg — 200 — 35.7 KiB — 17 ms — h2https://www.ubc.ca/_cache/images/26003-blowing_nose_flower_field-370x370_1x.jpgwww.ubc.ca/_cache/images/26003-blow... https://www.ubc.ca/_cache/images/26003-blowing_nose_flower_field-370x370_1x.jpg — 200 — 29.5 KiB — 18 ms — h2https://www.ubc.ca/_cache/images/25998-lexis_ly-370x370_1x.jpgwww.ubc.ca/_cache/images/25998-lexi... https://www.ubc.ca/_cache/images/25998-lexis_ly-370x370_1x.jpg — 200 — 19.8 KiB — 18 ms — h2https://www.googletagmanager.com/gtm.js?id=GTM-PGPCK4Wwww.googletagmanager.com/gtm.js?id=... https://www.googletagmanager.com/gtm.js?id=GTM-PGPCK4W — 200 — 159.3 KiB — 100 ms — h2https://www.google-analytics.com/analytics.jswww.google-analytics.com/analytics.... https://www.google-analytics.com/analytics.js — 200 — 20.9 KiB — 30 ms — h2https://cdn.ubc.ca/clf/7.0.5/img/ubc7-clf-sprite-blue.pngcdn.ubc.ca/clf/7.0.5/img/ubc7-clf-s... https://cdn.ubc.ca/clf/7.0.5/img/ubc7-clf-sprite-blue.png — 200 — 17.5 KiB — 8 ms — h2data:application/x-font-woff;base64,d09GRk9UVE8AAD7LAA0AAAAAbmAAAQAAAAA8oAAAAisAAAaRAAAAAAAAAABDRkY…data:application/x-font-woff;base64... data:application/x-font-woff;base64,d09GRk9UVE8AAD7LAA0AAAAAbmAAAQAAAAA8oAAAAisAAAaRAAAAAAAAAABDRkY… — 200 — 15.7 KiB — 92 ms — datadata:application/x-font-woff;base64,d09GRk9UVE8AAECKAA0AAAAAbsQAAQAAAAA+YAAAAioAAAaRAAAAAAAAAABDRkY…data:application/x-font-woff;base64... data:application/x-font-woff;base64,d09GRk9UVE8AAECKAA0AAAAAbsQAAQAAAAA+YAAAAioAAAaRAAAAAAAAAABDRkY… — 200 — 16.1 KiB — 93 ms — datadata:application/x-font-woff;base64,d09GRk9UVE8AAD+DAA0AAAAAb3AAAQAAAAA9WAAAAisAAAaRAAAAAAAAAABDRkY…data:application/x-font-woff;base64... data:application/x-font-woff;base64,d09GRk9UVE8AAD+DAA0AAAAAb3AAAQAAAAA9WAAAAisAAAaRAAAAAAAAAABDRkY… — 200 — 15.9 KiB — 103 ms — datadata:application/x-font-woff;base64,d09GRk9UVE8AABv3AAsAAAAAJxQAAQAAAAAZzAAAAisAAAaRAAAAAAAAAABDRkY…data:application/x-font-woff;base64... data:application/x-font-woff;base64,d09GRk9UVE8AABv3AAsAAAAAJxQAAQAAAAAZzAAAAisAAAaRAAAAAAAAAABDRkY… — 200 — 7.0 KiB — 99 ms — datadata:application/x-font-woff;base64,d09GRk9UVE8AABuKAAsAAAAAJegAAQAAAAAZYAAAAioAAAaRAAAAAAAAAABDRkY…data:application/x-font-woff;base64... data:application/x-font-woff;base64,d09GRk9UVE8AABuKAAsAAAAAJegAAQAAAAAZYAAAAioAAAaRAAAAAAAAAABDRkY… — 200 — 6.9 KiB — 80 ms — datadata:application/x-font-woff;base64,d09GRk9UVE8AABwPAAsAAAAAJygAAQAAAAAZ5AAAAisAAAaRAAAAAAAAAABDRkY…data:application/x-font-woff;base64... data:application/x-font-woff;base64,d09GRk9UVE8AABwPAAsAAAAAJygAAQAAAAAZ5AAAAisAAAaRAAAAAAAAAABDRkY… — 200 — 7.0 KiB — 71 ms — datahttps://cdn.ubc.ca/clf/7.0.5/font/font-v4/fontawesome-webfont-ubc-v4.ttfcdn.ubc.ca/clf/7.0.5/font/font-v4/f... https://cdn.ubc.ca/clf/7.0.5/font/font-v4/fontawesome-webfont-ubc-v4.ttf — 200 — 59.0 KiB — 37 ms — h2https://cdn.ubc.ca/clf/globalutility/index.js?callback=clfCallback&_=1776799499923cdn.ubc.ca/clf/globalutility/index.... https://cdn.ubc.ca/clf/globalutility/index.js?callback=clfCallback&_=1776799499923 — 200 — 2.0 KiB — 179 ms — h2
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https://tr.snapchat.com/p?pid=f389d2ba-ad41-41f2-80c9-37ef1c9c0768&ev=PAGE_VIEW&intg=gtm&pids=f389d2ba-ad41-41f2-80c9-37ef1c9c0768&u_c1=416b4438-1b29-48f7-b2ac-be8a841cdb13&cdid=%40-c3f0baf7-cb63-47ab-b46b-2dfd9773a1cf&u_sclid=1a45b7f6-6801-47fc-98bd-5fd334d63f64&u_scsid=35320725-9518-4cf9-a105-0853bec8f336&gat=G-Q74JQJCYJK%2CDC-8341020%2CGTM-PGPCK4W&gac=d89ae9ac&bg=false&bt=1d53c387&d_a=x86&d_bvs=%5B%2C%7B%22brand%22%3A%22Not-A.Brand%22%2C%22version%22%3A%2224.0.0.0%22%7D%7B%22brand%22%3A%22Chromium%22%2C%22version%22%3A%22146.0.7680.164%22%7D%5D&d_os=10.15.7&d_ot=macOS&df=true&huah=true&m_dcl=568&m_fcps=564&m_pi=556&m_pl=0&m_pv=2&m_rd=900&m_sh=600&m_sl=874&m_sw=800&pl=https%3A%2F%2Fwww.ubc.ca%2F&trackId=afe9fec4-d74d-4cd3-b5c8-4a3f790a4458&ts=1776799500421&v=3.55.0-2604211744 — 200 — 444 B — 101 ms — h2https://tr.snapchat.com/cm/i?pid=f389d2ba-ad41-41f2-80c9-37ef1c9c0768&u_scsid=35320725-9518-4cf9-a105-0853bec8f336&u_sclid=1a45b7f6-6801-47fc-98bd-5fd334d63f64tr.snapchat.com/cm/i?pid=f389d2ba-a... https://tr.snapchat.com/cm/i?pid=f389d2ba-ad41-41f2-80c9-37ef1c9c0768&u_scsid=35320725-9518-4cf9-a105-0853bec8f336&u_sclid=1a45b7f6-6801-47fc-98bd-5fd334d63f64 — 200 — 1.0 KiB — 100 ms — h2https://www.google.com/gmp/conversion/_dc_unique_id=17495643030656782587;_dc_ptd=ChEI8MCczwYQkY-Q6afjxZ38ARIfAGaq-NKyMqns5OC9vgg-hVStqwh6chGllJ3q_DSvGQ;_dc_time=1776799500;dc_pre=CIahuvjV_5MDFY0IrQYd79wKgw;src=8341020;type=ubcr90;cat=ubcal0;rcb=17;ord=1;num=7837218187472;npa=0;auiddc=1048912549.1776799500;uaa=x86;uab=64;uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164;uamb=0;uam=;uap=macOS;uapv=10.15.7;uaw=0;pscdl=noapi;frm=0;_tu=KJA;gtm=45fe64h1v9190981768z879661699za20gzb79661699zd79661699xea;gcd=13l3l3l3l1l1;dma=0;dc_fmt=3;tag_exp=0~115938465~115938468~117266400;epver=2;dc_random=1776799500_9w3HgGbAQoWuzaVEkPUyQNXil3FPgT4Jng;~oref=https%3A%2F%2Fwww.ubc.ca%2F?www.google.com/gmp/conversion/_dc_u... https://www.google.com/gmp/conversion/_dc_unique_id=17495643030656782587;_dc_ptd=ChEI8MCczwYQkY-Q6afjxZ38ARIfAGaq-NKyMqns5OC9vgg-hVStqwh6chGllJ3q_DSvGQ;_dc_time=1776799500;dc_pre=CIahuvjV_5MDFY0IrQYd79wKgw;src=8341020;type=ubcr90;cat=ubcal0;rcb=17;ord=1;num=7837218187472;npa=0;auiddc=1048912549.1776799500;uaa=x86;uab=64;uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164;uamb=0;uam=;uap=macOS;uapv=10.15.7;uaw=0;pscdl=noapi;frm=0;_tu=KJA;gtm=45fe64h1v9190981768z879661699za20gzb79661699zd79661699xea;gcd=13l3l3l3l1l1;dma=0;dc_fmt=3;tag_exp=0~115938465~115938468~117266400;epver=2;dc_random=1776799500_9w3HgGbAQoWuzaVEkPUyQNXil3FPgT4Jng;~oref=https%3A%2F%2Fwww.ubc.ca%2F? — 200 — 63 B — 198 ms — h3https://8341020.fls.doubleclick.net/activityi;dc_pre=CJDOvfjV_5MDFTMU7wIds7EPjQ;src=8341020;type=ubcr90;cat=ubcal0;rcb=17;ord=1;num=7837218187472;npa=0;auiddc=1048912549.1776799500;uaa=x86;uab=64;uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164;uamb=0;uam=;uap=macOS;uapv=10.15.7;uaw=0;pscdl=noapi;frm=0;_tu=KJA;gtm=45fe64h1v9190981768z879661699za20gzb79661699zd79661699xea;gcd=13l3l3l3l1l1;dma=0;dc_fmt=2;tag_exp=0~115938465~115938468~117266400;epver=2;dc_random=1776799500_9w3HgGbAQoWuzaVEkPUyQNXil3FPgT4Jng;_dc_test=1;~oref=https%3A%2F%2Fwww.ubc.ca%2F?8341020.fls.doubleclick.net/activit... https://8341020.fls.doubleclick.net/activityi;dc_pre=CJDOvfjV_5MDFTMU7wIds7EPjQ;src=8341020;type=ubcr90;cat=ubcal0;rcb=17;ord=1;num=7837218187472;npa=0;auiddc=1048912549.1776799500;uaa=x86;uab=64;uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164;uamb=0;uam=;uap=macOS;uapv=10.15.7;uaw=0;pscdl=noapi;frm=0;_tu=KJA;gtm=45fe64h1v9190981768z879661699za20gzb79661699zd79661699xea;gcd=13l3l3l3l1l1;dma=0;dc_fmt=2;tag_exp=0~115938465~115938468~117266400;epver=2;dc_random=1776799500_9w3HgGbAQoWuzaVEkPUyQNXil3FPgT4Jng;_dc_test=1;~oref=https%3A%2F%2Fwww.ubc.ca%2F? — 200 — 679 B — 38 ms — h2https://adservice.google.com/ddm/fls/z/dc_pre=CJDOvfjV_5MDFTMU7wIds7EPjQ;src=8341020;type=ubcr90;cat=ubcal0;rcb=17;ord=1;num=7837218187472;npa=0;auiddc=*;uaa=x86;uab=64;uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164;uamb=0;uam=;uap=macOS;uapv=10.15.7;uaw=0;pscdl=noapi;frm=0;_tu=KJA;gtm=45fe64h1v9190981768z879661699za20gzb79661699zd79661699xea;gcd=13l3l3l3l1l1;dma=0;dc_fmt=2;tag_exp=0~115938465~115938468~117266400;epver=2;dc_random=1776799500_9w3HgGbAQoWuzaVEkPUyQNXil3FPgT4Jng;_dc_test=1;~oref=https%3A%2F%2Fwww.ubc.ca%2Fadservice.google.com/ddm/fls/z/dc_p... https://adservice.google.com/ddm/fls/z/dc_pre=CJDOvfjV_5MDFTMU7wIds7EPjQ;src=8341020;type=ubcr90;cat=ubcal0;rcb=17;ord=1;num=7837218187472;npa=0;auiddc=*;uaa=x86;uab=64;uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164;uamb=0;uam=;uap=macOS;uapv=10.15.7;uaw=0;pscdl=noapi;frm=0;_tu=KJA;gtm=45fe64h1v9190981768z879661699za20gzb79661699zd79661699xea;gcd=13l3l3l3l1l1;dma=0;dc_fmt=2;tag_exp=0~115938465~115938468~117266400;epver=2;dc_random=1776799500_9w3HgGbAQoWuzaVEkPUyQNXil3FPgT4Jng;_dc_test=1;~oref=https%3A%2F%2Fwww.ubc.ca%2F — 200 — 63 B — 67 ms — h3https://analytics.google.com/g/collect?v=2&tid=G-Q74JQJCYJK&gtm=45je64h1v889096546z879661699za20gzb79661699zd79661699&_p=1776799499905&_gaz=1&gcd=13l3l3l3l1l1&npa=0&dma=0&_eu=AAAAAGA&are=1&cid=251401747.1776799500&frm=0&pscdl=noapi&rcb=15&sr=800x600&uaa=x86&uab=64&uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164&uam=&uamb=0&uap=macOS&uapv=10.15.7&uaw=0&ul=en-us&_s=1&tag_exp=0~115938465~115938469~117266401&sid=1776799500&sct=1&seg=0&dl=https%3A%2F%2Fwww.ubc.ca%2F&dt=The%20University%20of%20British%20Columbia&en=page_view&_fv=1&_ss=1&tfd=1020analytics.google.com/g/collect?v=2&... https://analytics.google.com/g/collect?v=2&tid=G-Q74JQJCYJK&gtm=45je64h1v889096546z879661699za20gzb79661699zd79661699&_p=1776799499905&_gaz=1&gcd=13l3l3l3l1l1&npa=0&dma=0&_eu=AAAAAGA&are=1&cid=251401747.1776799500&frm=0&pscdl=noapi&rcb=15&sr=800x600&uaa=x86&uab=64&uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164&uam=&uamb=0&uap=macOS&uapv=10.15.7&uaw=0&ul=en-us&_s=1&tag_exp=0~115938465~115938469~117266401&sid=1776799500&sct=1&seg=0&dl=https%3A%2F%2Fwww.ubc.ca%2F&dt=The%20University%20of%20British%20Columbia&en=page_view&_fv=1&_ss=1&tfd=1020 — 204 — 546 B — 55 ms — h2https://stats.g.doubleclick.net/g/collect?v=2&tid=G-Q74JQJCYJK&cid=251401747.1776799500&gtm=45je64h1v889096546z879661699za20gzb79661699zd79661699&rcb=15&aip=1&dma=0&gcd=13l3l3l3l1l1&npa=0&frm=0&tag_exp=0~115938465~115938469~117266401stats.g.doubleclick.net/g/collect?v... https://stats.g.doubleclick.net/g/collect?v=2&tid=G-Q74JQJCYJK&cid=251401747.1776799500&gtm=45je64h1v889096546z879661699za20gzb79661699zd79661699&rcb=15&aip=1&dma=0&gcd=13l3l3l3l1l1&npa=0&frm=0&tag_exp=0~115938465~115938469~117266401 — 204 — 546 B — 65 ms — h2https://cdn-akamai.mookie1.com/adv/default.jscdn-akamai.mookie1.com/adv/default.... https://cdn-akamai.mookie1.com/adv/default.js — 200 — 850 B — 33 ms — http/1.1https://sc-static.net/scevent.min.jssc-static.net/scevent.min.js https://sc-static.net/scevent.min.js — 200 — 24.8 KiB — 52 ms — h2https://tr6.snapchat.com/ptr6.snapchat.com/p https://tr6.snapchat.com/p — 200 — 47 B — 72 ms — h2https://tr.snapchat.com/cm/s?bt=1d53c387&pnid=140&cb=1776799500705&u_scsid=e61e9427-198c-451c-8d5b-42d24e26fea6&u_sclid=4de07d18-d5cb-46bb-bce7-af4788e8ebe6tr.snapchat.com/cm/s?bt=1d53c387&pn... https://tr.snapchat.com/cm/s?bt=1d53c387&pnid=140&cb=1776799500705&u_scsid=e61e9427-198c-451c-8d5b-42d24e26fea6&u_sclid=4de07d18-d5cb-46bb-bce7-af4788e8ebe6 — 302 — 326 B — 67 ms — h2https://cdn.ubc.ca/clf/7.0.5/img/favicon.icocdn.ubc.ca/clf/7.0.5/img/favicon.ic... https://cdn.ubc.ca/clf/7.0.5/img/favicon.ico — 200 — 1.7 KiB — 7 ms — h2https://pixel.tapad.com/idsync/ex/push?partner_id=2884&partner_url=https%3A%2F%2Ftr.snapchat.com%2Fcm%2Fp%3Frand%3D1776727697954%26pnid%3D140%26pcid%3D%24%7BTA_DEVICE_ID%7Dpixel.tapad.com/idsync/ex/push?part... https://pixel.tapad.com/idsync/ex/push?partner_id=2884&partner_url=https%3A%2F%2Ftr.snapchat.com%2Fcm%2Fp%3Frand%3D1776727697954%26pnid%3D140%26pcid%3D%24%7BTA_DEVICE_ID%7D — 302 — 692 B — 77 ms — h2https://tr.snapchat.com/ptr.snapchat.com/p https://tr.snapchat.com/p — 200 — 88 B — 75 ms — h2https://pixel.tapad.com/idsync/ex/push/check?partner_id=2884&partner_url=https%3A%2F%2Ftr.snapchat.com%2Fcm%2Fp%3Frand%3D1776727697954%26pnid%3D140%26pcid%3D%24%7BTA_DEVICE_ID%7Dpixel.tapad.com/idsync/ex/push/chec... https://pixel.tapad.com/idsync/ex/push/check?partner_id=2884&partner_url=https%3A%2F%2Ftr.snapchat.com%2Fcm%2Fp%3Frand%3D1776727697954%26pnid%3D140%26pcid%3D%24%7BTA_DEVICE_ID%7D — 302 — 388 B — 43 ms — h2https://tr.snapchat.com/cm/p?rand=1776727697954&pnid=140&pcid=6c495d70-e768-419d-bb45-53bde488c719tr.snapchat.com/cm/p?rand=177672769... https://tr.snapchat.com/cm/p?rand=1776727697954&pnid=140&pcid=6c495d70-e768-419d-bb45-53bde488c719 — 200 — 17 B — 68 ms — h3
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-party 663ms · 474KB · CA$9/mo
www.ubc.ca
Other
Optional
Execution 183ms
Transfer 7 KB
Monthly Cost CA$3/mo
Google Tag Manager
Tag Manager
Optional
Execution 125ms
Transfer 153 KB
Unused 41%
Monthly Cost CA$2/mo
Unattributable
Other
Optional
Execution 117ms
Transfer 0 KB
Monthly Cost CA$2/mo
Google Tag Manager
Tag Manager
Optional
Execution 112ms
Transfer 159 KB
Unused 41%
Monthly Cost CA$2/mo
Google Tag Manager
Tag Manager
Optional
Execution 70ms
Transfer 129 KB
Unused 44%
Monthly Cost CA$1/mo
sc-static.net
Other
Optional
Execution 56ms
Transfer 25 KB
Monthly Cost CA$1/mo

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

How third-party costs are calculated

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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