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https://hopkinsmedicine.org

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
76
GRADE
C
FIX
4
REVIEW
3
PASS
6
INFO
2

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

Mobile Desktop
85
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
100
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
77
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
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.

1.22 s

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

2.05 s

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

8 ms

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

0.013

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

1.73 s

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

2.46 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
6 PASS 3 REVIEW 4 FIX
D
Page Weight Budget
Action
2.5 MB transferred, 67 requests
FIX
2.5 MB transferred, 67 requests
Warning::
Page weighs 4.9 MB (2.5 MB transferred)
Warning::
Images are 1.5 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 1.5 MB
Warning::
JavaScript is 552 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 552 KB
Info::
Fonts are 246 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 246 KB
Info::
67 HTTP requests
Info::
Estimated 0.52 g CO2 per page load
2.5 MB / 2.4 MB budget
2.5 MB transferred
67 requests
0.52 g CO2 per page load
Images 1.5 MiB 61%
JavaScript 552.0 KiB 22%
Fonts 246.4 KiB 10%
CSS 130.7 KiB 5%
Other 36.9 KiB 1%
Other 11.2 KiB 0%
HTML 10.0 KiB 0%
Other 3.4 KiB 0%
Other 0 B 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Over budget

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.

Source: web.dev

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

Subset fonts to include only used characters, or switch to system font stacks.

Why this matters

Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).

Source: web.dev font loading

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 (2.5 MiB of 2.5 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
Page Weight Inventory
Action
67 resources · 2.5 MB · 253 KB savings available
FIX
67 resources · 2.5 MB · 253 KB savings available
Warning::
Page weight 1.5 MB over 1MB target
Got: 2.5 MB Expected: ≤ 1 MB
Info::
~253 KB of savings available
Warning::
66 third-party resources (100% of weight)
Info::
4 resources over 200KB
67 resources · 2.5 MiB · 66 third-party 1.5 MiB over 1MB target
Image 61% · 1.5 MiB
JavaScript 22% · 552.0 KiB
Font 10% · 246.4 KiB
CSS 5% · 135.0 KiB
Other 2% · 43.6 KiB
Document 0% · 10.3 KiB

~253.4 KiB of savings available

Remove unused JavaScript: 253.4 KiB
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.

C
Image Optimization
Action
28 images, 0 KB saveable
REVIEW
28 images, 0 KB saveable
Warning::
https://www.hopkinsmedicine.org/-/media/medicine/i... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.hopkinsmedicine.org/-/media/som/images... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.hopkinsmedicine.org/-/media/images/hop... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.hopkinsmedicine.org/-/media/jhm/images... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.hopkinsmedicine.org/-/media/images/hop... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
28 images 1.5 MB
0 oversized -0 KB
22 legacy format
5 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

B
JS Execution Cost
714ms total JS execution
REVIEW
714ms total JS execution
Info::
https://www.hopkinsmedicine.org/: 194ms CPU time
Info::
https://jhm.containers.piwik.pro/fd716230-1d9c-425...: 156ms CPU time
Info::
https://www.hopkinsmedicine.org/assets/js/health.j...: 146ms CPU time
Info::
Unattributable: 94ms CPU time
Info::
https://www.hopkinsmedicine.org/cdn-cgi/challenge-...: 62ms CPU time
Warning::
Third-party scripts: 714ms (100% of total)

Main Thread Breakdown

Script Evaluation 43% Other 22% Style & Layout 19% Script Parsing & Compilation 9% Rendering 4% Parse HTML & CSS 4%
ScriptTotalScriptingParse/CompileParty
https://www.hopkinsmedicine.org/194ms11ms1ms3rd
https://jhm.containers.piwik.pro/fd716230-1d9c-4254-9880-b5715cd3995a.js156ms115ms35ms3rd
https://www.hopkinsmedicine.org/assets/js/health.js146ms63ms21ms3rd
Unattributable94ms14ms0ms3rd
https://www.hopkinsmedicine.org/cdn-cgi/challenge-platform/scripts/jsd/main.js62ms59ms1ms3rd
https://cdn.cookielaw.org/scripttemplates/202406.1.0/otBannerSdk.js61ms38ms9ms3rd
C
JS Bundles
Action
11 scripts, 253 KB unused
REVIEW
11 scripts, 253 KB unused
Warning::
https://www.hopkinsmedicine.org/assets/js/health.j...: 166 KB unused (77%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.cookielaw.org/scripttemplates/202406.1...: 60 KB unused (55%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://jhm.containers.piwik.pro/fd716230-1d9c-425...: 27 KB unused (22%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 253 KB
253 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.hopkinsmedicine.org/assets/js/health.js217 KB166 KB (77%)✓3rd
https://cdn.cookielaw.org/scripttemplates/202406.1.0/otBannerSdk.js110 KB60 KB (55%)✓3rd
https://jhm.containers.piwik.pro/fd716230-1d9c-4254-9880-b5715cd3995a.js126 KB27 KB (22%)✓3rd
https://cdn.cookielaw.org/consent/018ef1e9-de13-746f-94ae-e683992bbd45/OtAutoBlock.js2 KB—✓3rd
https://cdn.cookielaw.org/scripttemplates/otSDKStub.js9 KB—✓3rd
https://www.hopkinsmedicine.org/assets/js/jquery-3.7.1.min.js30 KB—✓3rd
https://www.hopkinsmedicine.org/assets/js/jquery-migrate-1.4.1.min.js4 KB—✓3rd
https://www.hopkinsmedicine.org/assets/js/34.e82d4.js5 KB—✓3rd
https://www.hopkinsmedicine.org/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/main.js?12 KB—✓3rd
https://cdn.schemaapp.com/javascript/highlight.js12 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

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 (246 KB)
PASS
4 fonts (246 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

246 KB total

Render-blocking

0

of 4

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s 1.5 s 2.0 s FCP 1.2 s LCP 2.1 shttps://jhmcdn.azureedge.net/template-assets/fonts/noto-sans/noto-sans-v35_400_latin.woff2noto-sans-v35_400_latin... https://jhmcdn.azureedge.net/template-assets/fonts/noto-sans/noto-sans-v35_400_latin.woff2 — 39.0 KiB — 182 ms — font-display: swaphttps://jhmcdn.azureedge.net/template-assets/fonts/noto-sans/noto-sans-v35_700_latin.woff2noto-sans-v35_700_latin... https://jhmcdn.azureedge.net/template-assets/fonts/noto-sans/noto-sans-v35_700_latin.woff2 — 39.0 KiB — 186 ms — font-display: swaphttps://jhmcdn.azureedge.net/template-assets/fonts/noto-serif/noto-serif-v23_400_latin.woff2noto-serif-v23_400_lati... https://jhmcdn.azureedge.net/template-assets/fonts/noto-serif/noto-serif-v23_400_latin.woff2 — 42.6 KiB — 187 ms — font-display: swaphttps://jhmcdn.azureedge.net/template-assets/fonts/material-icons/material-icons-v140.woff2material-icons-v140.woff2 https://jhmcdn.azureedge.net/template-assets/fonts/material-icons/material-icons-v140.woff2 — 125.8 KiB — 193 ms — font-display: swap
noto-sans-v35_400_latin... woff2 swap
Size 39 KB
Load time 182 ms
Start 695 ms
Risk FOUT — text flashes from fallback to web font
noto-sans-v35_700_latin... woff2 swap
Size 39 KB
Load time 186 ms
Start 697 ms
Risk FOUT — text flashes from fallback to web font
noto-serif-v23_400_lati... woff2 swap
Size 43 KB
Load time 187 ms
Start 698 ms
Risk FOUT — text flashes from fallback to web font
material-icons-v140.woff2 woff2 swap
Size 126 KB
Load time 193 ms
Start 698 ms
Risk FOUT — 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 ~63 KB and ~126 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+
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
67 requests over 2097ms
INFO
0 ms 500 ms 1.0 s 1.5 s 2.0 s FCP 1.2 s LCP 2.1 shttps://hopkinsmedicine.org// https://hopkinsmedicine.org/ — 301 — 361 B — 424 ms — h2https://www.hopkinsmedicine.org/www.hopkinsmedicine.org/ https://www.hopkinsmedicine.org/ — 200 — 10.0 KiB — 75 ms — h2https://www.hopkinsmedicine.org/assets/css/base.csswww.hopkinsmedicine.org/assets/css/... https://www.hopkinsmedicine.org/assets/css/base.css — 200 — 130.7 KiB — 61 ms — h2https://cdn.cookielaw.org/consent/018ef1e9-de13-746f-94ae-e683992bbd45/OtAutoBlock.jscdn.cookielaw.org/consent/018ef1e9-... https://cdn.cookielaw.org/consent/018ef1e9-de13-746f-94ae-e683992bbd45/OtAutoBlock.js — 200 — 2.1 KiB — 81 ms — h2https://cdn.cookielaw.org/scripttemplates/otSDKStub.jscdn.cookielaw.org/scripttemplates/o... https://cdn.cookielaw.org/scripttemplates/otSDKStub.js — 200 — 9.1 KiB — 77 ms — h2https://www.hopkinsmedicine.org/-/media/images/hopkins-medicine-logo-white-header.svg?iar=0&hash=C6173D209DB591FDF4EFE00B18C2FFE4www.hopkinsmedicine.org/-/media/ima... https://www.hopkinsmedicine.org/-/media/images/hopkins-medicine-logo-white-header.svg?iar=0&hash=C6173D209DB591FDF4EFE00B18C2FFE4 — 200 — 5.4 KiB — 49 ms — h2https://www.hopkinsmedicine.org/-/media/medicine/images/som-logo.png?h=440&iar=0&w=640&hash=D029E5EBFBC931F4426EAFA54A5FE1D6www.hopkinsmedicine.org/-/media/med... https://www.hopkinsmedicine.org/-/media/medicine/images/som-logo.png?h=440&iar=0&w=640&hash=D029E5EBFBC931F4426EAFA54A5FE1D6 — 200 — 23.0 KiB — 58 ms — h2https://www.hopkinsmedicine.org/-/media/som/images/_images-md-program/match26/hopkins-match-day-2025-104.jpg?h=440&iar=0&w=640&hash=EBBC5D3A26B7386793FC72B62035F0FDwww.hopkinsmedicine.org/-/media/som... https://www.hopkinsmedicine.org/-/media/som/images/_images-md-program/match26/hopkins-match-day-2025-104.jpg?h=440&iar=0&w=640&hash=EBBC5D3A26B7386793FC72B62035F0FD — 200 — 314.6 KiB — 55 ms — h2https://www.hopkinsmedicine.org/-/media/jhm/images/homepage/researcher-in-lab.jpg?h=366&iar=0&w=650&hash=9D6F5BA6E2EC494762907F8B9CCE50B1www.hopkinsmedicine.org/-/media/jhm... https://www.hopkinsmedicine.org/-/media/jhm/images/homepage/researcher-in-lab.jpg?h=366&iar=0&w=650&hash=9D6F5BA6E2EC494762907F8B9CCE50B1 — 200 — 71.7 KiB — 46 ms — h2https://cdn.cookielaw.org/consent/018ef1e9-de13-746f-94ae-e683992bbd45/018ef1e9-de13-746f-94ae-e683992bbd45.jsoncdn.cookielaw.org/consent/018ef1e9-... https://cdn.cookielaw.org/consent/018ef1e9-de13-746f-94ae-e683992bbd45/018ef1e9-de13-746f-94ae-e683992bbd45.json — 200 — 2.4 KiB — 75 ms — h2https://www.hopkinsmedicine.org/-/media/images/hopkins-nav-logo.svgwww.hopkinsmedicine.org/-/media/ima... https://www.hopkinsmedicine.org/-/media/images/hopkins-nav-logo.svg — 200 — 4.2 KiB — 37 ms — h2https://www.hopkinsmedicine.org/assets/js/jquery-3.7.1.min.jswww.hopkinsmedicine.org/assets/js/j... https://www.hopkinsmedicine.org/assets/js/jquery-3.7.1.min.js — 200 — 29.9 KiB — 39 ms — h2https://www.hopkinsmedicine.org/assets/js/jquery-migrate-1.4.1.min.jswww.hopkinsmedicine.org/assets/js/j... https://www.hopkinsmedicine.org/assets/js/jquery-migrate-1.4.1.min.js — 200 — 4.0 KiB — 39 ms — h2https://www.hopkinsmedicine.org/assets/js/health.jswww.hopkinsmedicine.org/assets/js/h... https://www.hopkinsmedicine.org/assets/js/health.js — 200 — 216.9 KiB — 59 ms — h2https://www.hopkinsmedicine.org/-/media/jhm/images/icons-png---shared/stethoscope-blue.pngwww.hopkinsmedicine.org/-/media/jhm... https://www.hopkinsmedicine.org/-/media/jhm/images/icons-png---shared/stethoscope-blue.png — 200 — 19.4 KiB — 53 ms — h2https://www.hopkinsmedicine.org/-/media/jhm/images/icons-png---shared/location-blue.pngwww.hopkinsmedicine.org/-/media/jhm... https://www.hopkinsmedicine.org/-/media/jhm/images/icons-png---shared/location-blue.png — 200 — 9.8 KiB — 53 ms — h2https://www.hopkinsmedicine.org/-/media/jhm/images/icons-png---shared/appointment-blue.pngwww.hopkinsmedicine.org/-/media/jhm... https://www.hopkinsmedicine.org/-/media/jhm/images/icons-png---shared/appointment-blue.png — 200 — 12.6 KiB — 53 ms — h2https://www.hopkinsmedicine.org/-/media/jhm/images/icons-png---shared/mychart-blue.pngwww.hopkinsmedicine.org/-/media/jhm... https://www.hopkinsmedicine.org/-/media/jhm/images/icons-png---shared/mychart-blue.png — 200 — 6.4 KiB — 53 ms — h2https://www.hopkinsmedicine.org/-/media/johns-hopkins-childrens-center/images/usnwr/25-26/peds-usnews-25-26-640-336-3.jpgwww.hopkinsmedicine.org/-/media/joh... https://www.hopkinsmedicine.org/-/media/johns-hopkins-childrens-center/images/usnwr/25-26/peds-usnews-25-26-640-336-3.jpg — 200 — 132.4 KiB — 56 ms — h2https://www.hopkinsmedicine.org/-/media/usnews/images/25-26/slider-image-homepage.pngwww.hopkinsmedicine.org/-/media/usn... https://www.hopkinsmedicine.org/-/media/usnews/images/25-26/slider-image-homepage.png — 200 — 97.5 KiB — 56 ms — h2https://www.hopkinsmedicine.org/-/media/plastic-reconstructive-surgery/byoung-chol-oh-and-gerald-brandacher/rsl-ai/searson-team-copy.jpgwww.hopkinsmedicine.org/-/media/pla... https://www.hopkinsmedicine.org/-/media/plastic-reconstructive-surgery/byoung-chol-oh-and-gerald-brandacher/rsl-ai/searson-team-copy.jpg — 200 — 268.7 KiB — 60 ms — h2https://www.hopkinsmedicine.org/-/media/plastic-reconstructive-surgery/byoung-chol-oh-and-gerald-brandacher/rsl-ai.jpegwww.hopkinsmedicine.org/-/media/pla... https://www.hopkinsmedicine.org/-/media/plastic-reconstructive-surgery/byoung-chol-oh-and-gerald-brandacher/rsl-ai.jpeg — 200 — 52.7 KiB — 57 ms — h2https://www.hopkinsmedicine.org/-/media/jhm/images/homepage/rsl-640.jpgwww.hopkinsmedicine.org/-/media/jhm... https://www.hopkinsmedicine.org/-/media/jhm/images/homepage/rsl-640.jpg — 200 — 18.9 KiB — 57 ms — h2https://www.hopkinsmedicine.org/-/media/jhm/images/homepage/ocd-children.jpgwww.hopkinsmedicine.org/-/media/jhm... https://www.hopkinsmedicine.org/-/media/jhm/images/homepage/ocd-children.jpg — 200 — 47.4 KiB — 60 ms — h2https://www.hopkinsmedicine.org/-/media/jhm/images/homepage/microgrippers-illustration.jpgwww.hopkinsmedicine.org/-/media/jhm... https://www.hopkinsmedicine.org/-/media/jhm/images/homepage/microgrippers-illustration.jpg — 200 — 77.9 KiB — 59 ms — h2https://www.hopkinsmedicine.org/-/media/jhm/images/homepage/digital-twin-heart.jpgwww.hopkinsmedicine.org/-/media/jhm... https://www.hopkinsmedicine.org/-/media/jhm/images/homepage/digital-twin-heart.jpg — 200 — 30.0 KiB — 59 ms — h2https://jhm.containers.piwik.pro/fd716230-1d9c-4254-9880-b5715cd3995a.jsjhm.containers.piwik.pro/fd716230-1... https://jhm.containers.piwik.pro/fd716230-1d9c-4254-9880-b5715cd3995a.js — 200 — 125.5 KiB — 611 ms — h2data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' xml:space='preserve' sty…www.w3.org/2000/svg' xml:space='pre... data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' xml:space='preserve' sty… — 200 — 0 B — 0 ms — datadata:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3…www.w3.org/2000/svg' viewBox='0 0 2... data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3… — 200 — 0 B — 0 ms — datadata:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='137' height='108'…www.w3.org/2000/svg' width='137' he... data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='137' height='108'… — 200 — 0 B — 0 ms — data
0 ms 500 ms 1.0 s 1.5 s 2.0 s FCP 1.2 s LCP 2.1 shttps://hopkinsmedicine.org// https://hopkinsmedicine.org/ — 301 — 361 B — 424 ms — h2https://www.hopkinsmedicine.org/www.hopkinsmedicine.org/ https://www.hopkinsmedicine.org/ — 200 — 10.0 KiB — 75 ms — h2https://www.hopkinsmedicine.org/assets/css/base.csswww.hopkinsmedicine.org/assets/css/... https://www.hopkinsmedicine.org/assets/css/base.css — 200 — 130.7 KiB — 61 ms — h2https://cdn.cookielaw.org/consent/018ef1e9-de13-746f-94ae-e683992bbd45/OtAutoBlock.jscdn.cookielaw.org/consent/018ef1e9-... https://cdn.cookielaw.org/consent/018ef1e9-de13-746f-94ae-e683992bbd45/OtAutoBlock.js — 200 — 2.1 KiB — 81 ms — h2https://cdn.cookielaw.org/scripttemplates/otSDKStub.jscdn.cookielaw.org/scripttemplates/o... https://cdn.cookielaw.org/scripttemplates/otSDKStub.js — 200 — 9.1 KiB — 77 ms — h2https://www.hopkinsmedicine.org/-/media/images/hopkins-medicine-logo-white-header.svg?iar=0&hash=C6173D209DB591FDF4EFE00B18C2FFE4www.hopkinsmedicine.org/-/media/ima... https://www.hopkinsmedicine.org/-/media/images/hopkins-medicine-logo-white-header.svg?iar=0&hash=C6173D209DB591FDF4EFE00B18C2FFE4 — 200 — 5.4 KiB — 49 ms — h2https://www.hopkinsmedicine.org/-/media/medicine/images/som-logo.png?h=440&iar=0&w=640&hash=D029E5EBFBC931F4426EAFA54A5FE1D6www.hopkinsmedicine.org/-/media/med... https://www.hopkinsmedicine.org/-/media/medicine/images/som-logo.png?h=440&iar=0&w=640&hash=D029E5EBFBC931F4426EAFA54A5FE1D6 — 200 — 23.0 KiB — 58 ms — h2https://www.hopkinsmedicine.org/-/media/som/images/_images-md-program/match26/hopkins-match-day-2025-104.jpg?h=440&iar=0&w=640&hash=EBBC5D3A26B7386793FC72B62035F0FDwww.hopkinsmedicine.org/-/media/som... 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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 714ms · 463KB · $9/mo
www.hopkinsmedicine.org
Other
Optional
Execution 194ms
Transfer 10 KB
Monthly Cost $3/mo
jhm.containers.piwik.pro
Other
Optional
Execution 156ms
Transfer 126 KB
Unused 22%
Monthly Cost $2/mo
www.hopkinsmedicine.org
Other
Optional
Execution 146ms
Transfer 217 KB
Unused 77%
Monthly Cost $2/mo
Unattributable
Other
Optional
Execution 94ms
Transfer 0 KB
Monthly Cost $1/mo
www.hopkinsmedicine.org
Other
Optional
Execution 62ms
Transfer 0 KB
Monthly Cost $1/mo
OneTrust
Consent
Essential
Execution 61ms
Transfer 110 KB
Unused 55%
Monthly Cost $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

77% of www.hopkinsmedicine.org'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

55% 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

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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