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Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
72
GRADE
C
FIX
4
REVIEW
3
PASS
8
INFO
2

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

Mobile Desktop
30
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
92
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.

6.01 s

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

10.94 s

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

2.23 s

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

0.000

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

7.74 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.

19.18 s

Page Load Progression

482 ms
963 ms
1.4 s
1.9 s
2.4 s
2.9 s
3.4 s
3.9 s
Checks
17
8 PASS 3 REVIEW 4 FIX
F
Page Weight Budget
Action
3.7 MB transferred, 71 requests
FIX
3.7 MB transferred, 71 requests
Warning::
Page weighs 7.2 MB (3.7 MB transferred)
Warning::
JavaScript is 1.4 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.4 MB
Warning::
Images are 1.1 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 1.1 MB
Info::
Fonts are 833 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 833 KB
Info::
71 HTTP requests
Info::
Estimated 0.77 g CO2 per page load
3.7 MB / 2.4 MB budget
3.7 MB transferred
71 requests
0.77 g CO2 per page load
JavaScript 1.4 MiB 38%
Images 1.1 MiB 30%
Fonts 832.7 KiB 22%
Other 197.2 KiB 5%
CSS 114.1 KiB 3%
HTML 43.4 KiB 1%
Other 7.5 KiB 0%
Other 4.1 KiB 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Over 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

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

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

F
JS Execution Cost
Action
5346ms total JS execution
FIX
5346ms total JS execution
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-5BH...: 967ms CPU time
Warning::
https://asm.org/: 935ms CPU time
Warning::
https://www.googletagmanager.com/gtag/js?id=G-MZTP...: 653ms CPU time
Warning::
https://cmp.osano.com/16CXxzUMyG0rk3ynA/80d48381-f...: 639ms CPU time
Warning::
Unattributable: 493ms CPU time
Warning::
Third-party scripts: 3821ms (71% of total)

Main Thread Breakdown

Script Evaluation 57% Other 14% Script Parsing & Compilation 12% Style & Layout 10%
ScriptTotalScriptingParse/CompileParty
https://www.googletagmanager.com/gtm.js?id=GTM-5BH7J8M967ms730ms86ms3rd
https://asm.org/935ms42ms8ms1st
https://www.googletagmanager.com/gtag/js?id=G-MZTPXVJ8R2&cx=c&gtm=4e64h1653ms581ms66ms3rd
https://cmp.osano.com/16CXxzUMyG0rk3ynA/80d48381-f550-4573-96db-e6de4a4cd97b/osano.js639ms545ms38ms3rd
Unattributable493ms46ms0ms3rd
https://asm.org/content/dist/vendor.min.js?v=5682bf5710d3865078d0ab8eba45612074be8ac27f3fe7a281ee9de3f2caff90332ms133ms198ms1st
https://www.googletagmanager.com/gtag/js?id=AW-858234627&cx=c&gtm=4e64h1296ms220ms74ms3rd
https://asm.org/content/dist/master.min.js?v=8123ff3ce51ed2fe7cda9373615ca1edbd87c040aee167baebcff8cfd514caef258ms243ms9ms1st
https://www.googletagmanager.com/gtag/js?id=AW-855308285&cx=c&gtm=4e64h1255ms189ms63ms3rd
https://js.monitor.azure.com/scripts/b/ai.2.min.js157ms129ms18ms3rd

Showing top 10 of 14 scripts

F
JS Bundles
Action
21 scripts, 694 KB unused
FIX
21 scripts, 694 KB unused
Warning::
https://asm.org/content/dist/vendor.min.js?v=5682b...: 302 KB unused (83%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-864F...: 118 KB unused (71%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-MZTP...: 68 KB unused (40%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=AW-855...: 63 KB unused (43%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=AW-858...: 63 KB unused (38%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 694 KB
694 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://asm.org/content/dist/vendor.min.js?v=5682bf5710d3865078d0ab8eba45612074be8ac27f3fe7a281ee9de3f2caff90368 KB302 KB (83%)✓1st
https://www.googletagmanager.com/gtag/js?id=G-864FXWB263&cx=c&gtm=4e64h1167 KB118 KB (71%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-MZTPXVJ8R2&cx=c&gtm=4e64h1173 KB68 KB (40%)✓3rd
https://www.googletagmanager.com/gtag/js?id=AW-855308285&cx=c&gtm=4e64h1148 KB63 KB (43%)✓3rd
https://www.googletagmanager.com/gtag/js?id=AW-858234627&cx=c&gtm=4e64h1167 KB63 KB (38%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-5BH7J8M173 KB57 KB (33%)✓3rd
https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js30 KB22 KB (75%)✓3rd
https://cdn.propfuel.com/build/assets/plugin-BDDMTtXp.js3 KB—✓3rd
https://www.youtube.com/iframe_api3 KB—✓3rd
https://asm.org/content/dist/plugins/liga.js?v=39461eda97362282ef523252fe992bb53de197a0dd7e8fd1f726fa0164165a1015 KB—✓1st

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

D
Page Weight Inventory
Action
71 resources · 3.7 MB · 694 KB savings available
FIX
71 resources · 3.7 MB · 694 KB savings available
Warning::
Page weight 2.7 MB over 1MB target
Got: 3.7 MB Expected: ≤ 1 MB
Info::
~694 KB of savings available
Info::
34 third-party resources (32% of weight)
Info::
5 resources over 200KB
71 resources · 3.7 MiB · 34 third-party 2.7 MiB over 1MB target
JavaScript 38% · 1.4 MiB
Image 34% · 1.3 MiB
Font 22% · 832.7 KiB
CSS 3% · 114.1 KiB
Document 2% · 81.2 KiB
Other 0% · 4.7 KiB

~694.5 KiB of savings available

Remove unused JavaScript: 694.5 KiB
B
Image Optimization
11 images, 0 KB saveable
REVIEW
11 images, 0 KB saveable
Warning::
https://asm.org/content/images/logo-footer.svg?v=e... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
11 images 1.1 MB
0 oversized -0 KB
10 legacy format
1 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

C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

B
HTTP Caching
private
REVIEW
private
Info::
Cache-Control header is set
Got: private
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

private

DirectiveValueMeaning
private—Only browser cache, not CDN/proxy
A
Third-Party Impact
32% third-party, 0 ms blocking
PASS
32% third-party, 0 ms blocking
Info::
Third-party code accounts for 32% of page weight (1.2 MiB of 3.7 MiB)
Info::
Third-party blocking time is low (0 ms)
68%
32%
First-party Third-party
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
9 fonts (833 KB)
PASS
9 fonts (833 KB)
Info::
9 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

9

833 KB total

Render-blocking

0

of 9

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s FCP 6.0 s LCP 10.9 shttps://asm.org/content/dist/assets/lineto-replica-pro-bold.woff2lineto-replica-pro-bold... https://asm.org/content/dist/assets/lineto-replica-pro-bold.woff2 — 47.0 KiB — 379 ms — font-display: swaphttps://asm.org/content/dist/assets/lineto-replica-pro-light.woff2lineto-replica-pro-ligh... https://asm.org/content/dist/assets/lineto-replica-pro-light.woff2 — 46.3 KiB — 381 ms — font-display: swaphttps://use.fontawesome.com/releases/v6.4.2/webfonts/fa-brands-400.woff2fa-brands-400.woff2 https://use.fontawesome.com/releases/v6.4.2/webfonts/fa-brands-400.woff2 — 107.7 KiB — 23 ms — font-display: swaphttps://fonts.gstatic.com/s/sourceserifpro/v18/neIXzD-0qpwxpaWvjeD0X88SAOeasasatSyqxKcsdrM.woff2neIXzD-0qpwxpaWvjeD0X88... https://fonts.gstatic.com/s/sourceserifpro/v18/neIXzD-0qpwxpaWvjeD0X88SAOeasasatSyqxKcsdrM.woff2 — 21.1 KiB — 18 ms — font-display: swaphttps://fonts.gstatic.com/s/sourceserifpro/v18/neIQzD-0qpwxpaWvjeD0X88SAOeauXQ-oAGIyY0.woff2neIQzD-0qpwxpaWvjeD0X88... https://fonts.gstatic.com/s/sourceserifpro/v18/neIQzD-0qpwxpaWvjeD0X88SAOeauXQ-oAGIyY0.woff2 — 20.0 KiB — 17 ms — font-display: swaphttps://asm.org/content/dist/assets/fb493903265cad425ccdf8e04fc2de61.woff2fb493903265cad425ccdf8e... https://asm.org/content/dist/assets/fb493903265cad425ccdf8e04fc2de61.woff2 — 75.3 KiB — 388 ms — font-display: swaphttps://asm.org/content/dist/assets/lineto-replica-pro-regular.woff2lineto-replica-pro-regu... https://asm.org/content/dist/assets/lineto-replica-pro-regular.woff2 — 46.7 KiB — 371 ms — font-display: swaphttps://asm.org/content/dist/assets/lineto-replica-pro-lightitalic.woff2lineto-replica-pro-ligh... https://asm.org/content/dist/assets/lineto-replica-pro-lightitalic.woff2 — 47.4 KiB — 387 ms — font-display: swaphttps://asm.org/content/dist/assets/linearicons.ttflinearicons.ttf https://asm.org/content/dist/assets/linearicons.ttf — 421.2 KiB — 513 ms — font-display: swap
lineto-replica-pro-bold... woff2 swap
Size 47 KB
Load time 379 ms
Start 2.2 s
Risk FOUT — text flashes from fallback to web font
lineto-replica-pro-ligh... woff2 swap
Size 46 KB
Load time 381 ms
Start 2.2 s
Risk FOUT — text flashes from fallback to web font
fa-brands-400.woff2 woff2 swap
Size 108 KB
Load time 23 ms
Start 2.2 s
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
neIXzD-0qpwxpaWvjeD0X88... woff2 swap
Size 21 KB
Load time 18 ms
Start 2.2 s
Risk FOUT — text flashes from fallback to web font
neIQzD-0qpwxpaWvjeD0X88... woff2 swap
Size 20 KB
Load time 17 ms
Start 2.2 s
Risk FOUT — text flashes from fallback to web font
fb493903265cad425ccdf8e... woff2 swap
Size 75 KB
Load time 388 ms
Start 2.2 s
Risk FOUT — text flashes from fallback to web font
lineto-replica-pro-regu... woff2 swap
Size 47 KB
Load time 371 ms
Start 2.2 s
Risk FOUT — text flashes from fallback to web font
lineto-replica-pro-ligh... woff2 swap
Size 47 KB
Load time 387 ms
Start 2.2 s
Risk FOUT — text flashes from fallback to web font
linearicons.ttf ttf swap
Size 421 KB
Load time 513 ms
Start 2.6 s
Risk FOUT — 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
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 ~391 KB and ~782 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
71 requests over 5144ms
INFO
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s FCP 6.0 s LCP 10.9 shttps://asm.org// https://asm.org/ — 200 — 43.4 KiB — 1.0 s — h2https://use.fontawesome.com/releases/v6.4.2/css/all.cssuse.fontawesome.com/releases/v6.4.2... https://use.fontawesome.com/releases/v6.4.2/css/all.css — 200 — 24.4 KiB — 27 ms — h2https://asm.org/content/dist/style.min.css?v=1444e28fd9daba4943019f0fc18061370f879ce54421773b49c675dbea8a686a/content/dist/style.min.css?v=1444e... https://asm.org/content/dist/style.min.css?v=1444e28fd9daba4943019f0fc18061370f879ce54421773b49c675dbea8a686a — 200 — 72.8 KiB — 707 ms — h2https://asm.org/content/dist/master.min.css?v=0f9d8aeb992adb4f437fd7df9999dfe9d5c2748123a994729a03e1c6707169c9/content/dist/master.min.css?v=0f9d... https://asm.org/content/dist/master.min.css?v=0f9d8aeb992adb4f437fd7df9999dfe9d5c2748123a994729a03e1c6707169c9 — 200 — 7.3 KiB — 706 ms — h2https://asm.org/Kentico/Content/Widgets/RichText/froala_style.css/Kentico/Content/Widgets/RichText/f... https://asm.org/Kentico/Content/Widgets/RichText/froala_style.css — 200 — 5.3 KiB — 709 ms — h2https://asm.org/Content/Widgets/Shared/wrapper.css/Content/Widgets/Shared/wrapper.css https://asm.org/Content/Widgets/Shared/wrapper.css — 301 — 3.0 KiB — 720 ms — h2https://cmp.osano.com/16CXxzUMyG0rk3ynA/80d48381-f550-4573-96db-e6de4a4cd97b/osano.jscmp.osano.com/16CXxzUMyG0rk3ynA/80d... https://cmp.osano.com/16CXxzUMyG0rk3ynA/80d48381-f550-4573-96db-e6de4a4cd97b/osano.js — 200 — 51.4 KiB — 28 ms — h3https://d932.asm.org/script.jsd932.asm.org/script.js https://d932.asm.org/script.js — 404 — 163 B — 737 ms — h2https://asm.org/content/dist/responsive-table.min.js?v=6ff7f0e95c8833ff9ce0dd037bf278383341f34cbc195139ac368cbd694598bc/content/dist/responsive-table.min.... https://asm.org/content/dist/responsive-table.min.js?v=6ff7f0e95c8833ff9ce0dd037bf278383341f34cbc195139ac368cbd694598bc — 200 — 6.9 KiB — 709 ms — h2https://asm.org/content/images/logo.svg?v=07ca27a5342ccf3d818d0de3b8123cf580434db324e21ba818f9ec2e8ed14223/content/images/logo.svg?v=07ca27a5... https://asm.org/content/images/logo.svg?v=07ca27a5342ccf3d818d0de3b8123cf580434db324e21ba818f9ec2e8ed14223 — 200 — 14.0 KiB — 711 ms — h2https://asm.org/getmedia/bb4f3d40-a587-4407-84fe-71cf595d274f/homepage-microbe_try-events-3.jpg/getmedia/bb4f3d40-a587-4407-84fe-7... https://asm.org/getmedia/bb4f3d40-a587-4407-84fe-71cf595d274f/homepage-microbe_try-events-3.jpg — 200 — 326.2 KiB — 963 ms — h2https://fonts.googleapis.com/css?family=Source+Serif+Pro:400,600,700fonts.googleapis.com/css?family=Sou... https://fonts.googleapis.com/css?family=Source+Serif+Pro:400,600,700 — 200 — 1.2 KiB — 15 ms — h2https://asm.org/content/widgets/shared/wrapper.css/content/widgets/shared/wrapper.css https://asm.org/content/widgets/shared/wrapper.css — 200 — 3.1 KiB — 470 ms — h2https://asm.org/content/images/logo-footer.svg?v=eba5e794a49dfb73f75087af193ec5cb5fcbfdd6a1ffdd2924615de2f3cac7e2/content/images/logo-footer.svg?v=e... https://asm.org/content/images/logo-footer.svg?v=eba5e794a49dfb73f75087af193ec5cb5fcbfdd6a1ffdd2924615de2f3cac7e2 — 200 — 14.1 KiB — 472 ms — h2https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.jsajax.googleapis.com/ajax/libs/jquer... https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js — 200 — 30.2 KiB — 13 ms — h2blob:https://asm.org/e88073c2-d993-4c3f-a8a3-4b23a5244790asm.org/e88073c2-d993-4c3f-a8a3-4b2... blob:https://asm.org/e88073c2-d993-4c3f-a8a3-4b23a5244790 — 200 — -1 B — 174 ms — blobhttps://asm.org/content/dist/vendor.min.js?v=5682bf5710d3865078d0ab8eba45612074be8ac27f3fe7a281ee9de3f2caff90/content/dist/vendor.min.js?v=5682b... https://asm.org/content/dist/vendor.min.js?v=5682bf5710d3865078d0ab8eba45612074be8ac27f3fe7a281ee9de3f2caff90 — 200 — 368.0 KiB — 485 ms — 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https://asm.org/getmedia/47a857f4-4baa-4aca-bf8b-88923ae277f9/asm-press-webinars-generic-our-work.png?width=500&height=500&ext=.png — 200 — 325.2 KiB — 480 ms — h2https://asm.org/content/dist/assets/linearicons.ttf/content/dist/assets/linearicons.tt... https://asm.org/content/dist/assets/linearicons.ttf — 200 — 421.2 KiB — 513 ms — h2https://cmp.osano.com/16CXxzUMyG0rk3ynA/80d48381-f550-4573-96db-e6de4a4cd97b/osano-ui.jscmp.osano.com/16CXxzUMyG0rk3ynA/80d... https://cmp.osano.com/16CXxzUMyG0rk3ynA/80d48381-f550-4573-96db-e6de4a4cd97b/osano-ui.js — 200 — 29.1 KiB — 9 ms — h3https://cmp.osano.com/16CXxzUMyG0rk3ynA/80d48381-f550-4573-96db-e6de4a4cd97b/en.jsoncmp.osano.com/16CXxzUMyG0rk3ynA/80d... https://cmp.osano.com/16CXxzUMyG0rk3ynA/80d48381-f550-4573-96db-e6de4a4cd97b/en.json — 200 — 0 B — 243 ms — h3https://asm.org/api/bookmarks/loadBookmarks/api/bookmarks/loadBookmarks https://asm.org/api/bookmarks/loadBookmarks — 301 — 3.0 KiB — 350 ms — h2https://asmusa.informz.net/web_trk/collector/?e=pv&url=https%3A%2F%2Fasm.org%2F&page=American%20Society%20for%20Microbiology&tv=js-2.5.3&tna=infz&aid=12BC3C42-28B9-4C07-8A27-5D04B75CDC03&p=web&tz=UTC&lang=en-US&cs=UTF-8&f_pdf=1&f_qt=0&f_realp=0&f_wma=0&f_dir=0&f_fla=0&f_java=0&f_gears=0&f_ag=0&res=412x823&cd=24&cookie=1&eid=ae431459-5ec2-4e7c-996b-3cbf4f8d6180&dtm=1776806532484&vp=412x823&ds=412x6459&vid=1&sid=157e8618-0ce5-49fa-a5a8-b33fb77c4b22&duid=ce937629a3ebf8a2&fp=2188173459asmusa.informz.net/web_trk/collecto... https://asmusa.informz.net/web_trk/collector/?e=pv&url=https%3A%2F%2Fasm.org%2F&page=American%20Society%20for%20Microbiology&tv=js-2.5.3&tna=infz&aid=12BC3C42-28B9-4C07-8A27-5D04B75CDC03&p=web&tz=UTC&lang=en-US&cs=UTF-8&f_pdf=1&f_qt=0&f_realp=0&f_wma=0&f_dir=0&f_fla=0&f_java=0&f_gears=0&f_ag=0&res=412x823&cd=24&cookie=1&eid=ae431459-5ec2-4e7c-996b-3cbf4f8d6180&dtm=1776806532484&vp=412x823&ds=412x6459&vid=1&sid=157e8618-0ce5-49fa-a5a8-b33fb77c4b22&duid=ce937629a3ebf8a2&fp=2188173459 — 200 — 1.1 KiB — 896 ms — h2https://cmp.osano.com/16CXxzUMyG0rk3ynA/80d48381-f550-4573-96db-e6de4a4cd97b/en.jsoncmp.osano.com/16CXxzUMyG0rk3ynA/80d... https://cmp.osano.com/16CXxzUMyG0rk3ynA/80d48381-f550-4573-96db-e6de4a4cd97b/en.json — 200 — 2.8 KiB — 6 ms — h3https://asm.org/api/bookmarks/loadbookmarks/api/bookmarks/loadbookmarks https://asm.org/api/bookmarks/loadbookmarks — 404 — 6.8 KiB — 245 ms — h2https://eastus2-0.in.applicationinsights.azure.com//v2/trackeastus2-0.in.applicationinsights.az... https://eastus2-0.in.applicationinsights.azure.com//v2/track — 204 — 0 B — 1.1 s — h2https://asm.org/favicon.ico?v=070b24788dbbb99448c3d0f494ee4105a3483347c7349a2a5336fe83ac97a9fc/favicon.ico?v=070b24788dbbb99448c3... https://asm.org/favicon.ico?v=070b24788dbbb99448c3d0f494ee4105a3483347c7349a2a5336fe83ac97a9fc — 200 — 166.2 KiB — 261 ms — h2https://www.google-analytics.com/g/collect?v=2&tid=G-864FXWB263&gtm=45be64h1v898313424z876046539za20gzb76046539zd76046539&_p=1776806531594&gcs=G100&gcd=13p3p3p3p5l1&npa=1&dma_cps=-&dma=0&are=1&cid=17024428.1776806533&frm=0&pscdl=denied&rcb=13&sr=412x823&uaa=&uab=64&uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&_s=1&tag_exp=0~115938465~115938469~117266401~117512543~117884344&sid=1776806532&sct=1&seg=0&dl=https%3A%2F%2Fasm.org%2F&dt=American%20Society%20for%20Microbiology&_tu=CA&en=page_view&_fv=1&_nsi=1&_ss=1&tfd=3395www.google-analytics.com/g/collect?... https://www.google-analytics.com/g/collect?v=2&tid=G-864FXWB263&gtm=45be64h1v898313424z876046539za20gzb76046539zd76046539&_p=1776806531594&gcs=G100&gcd=13p3p3p3p5l1&npa=1&dma_cps=-&dma=0&are=1&cid=17024428.1776806533&frm=0&pscdl=denied&rcb=13&sr=412x823&uaa=&uab=64&uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&_s=1&tag_exp=0~115938465~115938469~117266401~117512543~117884344&sid=1776806532&sct=1&seg=0&dl=https%3A%2F%2Fasm.org%2F&dt=American%20Society%20for%20Microbiology&_tu=CA&en=page_view&_fv=1&_nsi=1&_ss=1&tfd=3395 — 204 — 543 B — 85 ms — h2https://www.google-analytics.com/g/collect?v=2&tid=G-MZTPXVJ8R2&gtm=45je64h1v877460568z876046539za20gzb76046539zd76046539&_p=1776806531594&gcs=G100&gcd=13p3p3p3p5l1&npa=1&dma_cps=-&dma=0&_eu=AAAAAGA&are=1&cid=17024428.1776806533&frm=0&pscdl=denied&rcb=17&sr=412x823&uaa=&uab=64&uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&_s=1&tag_exp=0~115616986~115938465~115938469~117266401~117512543~118128922&dl=https%3A%2F%2Fasm.org%2F&sid=1776806532&sct=1&seg=0&dt=American%20Society%20for%20Microbiology&_tu=CA&en=page_view&_fv=1&_ss=1&ep.event_type=default&ep.hash=&ep.gtm_version=GTM-5BH7J8M%3A264&ep.audience=&ep.topic=&ep.contentType=&ep.keywords=&ep.pub_date=N%2FA&ep.page_age=N%2FA&ep.logged_in_event=logged-out&epn.event_timestamp=1776806531961&ep.membership_type=non-member&ep.troubleshoot=https%3A%2F%2Fasm.org%2F&epn.word_count=35&epn.link_density=0&epn.total_pdfs_on_page=0&epn.expected_read_time_in_min=1&up.membership_type=non-member&up.logged_in_status=logged-out&tfd=3460www.google-analytics.com/g/collect?... https://www.google-analytics.com/g/collect?v=2&tid=G-MZTPXVJ8R2&gtm=45je64h1v877460568z876046539za20gzb76046539zd76046539&_p=1776806531594&gcs=G100&gcd=13p3p3p3p5l1&npa=1&dma_cps=-&dma=0&_eu=AAAAAGA&are=1&cid=17024428.1776806533&frm=0&pscdl=denied&rcb=17&sr=412x823&uaa=&uab=64&uafvl=Not-A.Brand%3B24.0.0.0%7CChromium%3B146.0.7680.164&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&_s=1&tag_exp=0~115616986~115938465~115938469~117266401~117512543~118128922&dl=https%3A%2F%2Fasm.org%2F&sid=1776806532&sct=1&seg=0&dt=American%20Society%20for%20Microbiology&_tu=CA&en=page_view&_fv=1&_ss=1&ep.event_type=default&ep.hash=&ep.gtm_version=GTM-5BH7J8M%3A264&ep.audience=&ep.topic=&ep.contentType=&ep.keywords=&ep.pub_date=N%2FA&ep.page_age=N%2FA&ep.logged_in_event=logged-out&epn.event_timestamp=1776806531961&ep.membership_type=non-member&ep.troubleshoot=https%3A%2F%2Fasm.org%2F&epn.word_count=35&epn.link_density=0&epn.total_pdfs_on_page=0&epn.expected_read_time_in_min=1&up.membership_type=non-member&up.logged_in_status=logged-out&tfd=3460 — 204 — 48 B — 21 ms — h2https://pagead2.googlesyndication.com/ccm/collect?rcb=12&frm=0&ae=g&en=page_view&dl=https%3A%2F%2Fasm.org%2F&scrsrc=www.googletagmanager.com&rnd=1859005151.1776806533&navt=n&npa=1&us_privacy=1---&ep.ads_data_redaction=1&_tu=CA&gtm=45He64h1v76046539za200zd76046539xea&gcs=G100&gcd=13p3p3p3p5l1&dma_cps=-&dma=0&tag_exp=0~115616986~115938465~115938468~117266401&apve=1&apvf=f&apvc=1&tft=1776806533009&tfd=3464pagead2.googlesyndication.com/ccm/c... https://pagead2.googlesyndication.com/ccm/collect?rcb=12&frm=0&ae=g&en=page_view&dl=https%3A%2F%2Fasm.org%2F&scrsrc=www.googletagmanager.com&rnd=1859005151.1776806533&navt=n&npa=1&us_privacy=1---&ep.ads_data_redaction=1&_tu=CA&gtm=45He64h1v76046539za200zd76046539xea&gcs=G100&gcd=13p3p3p3p5l1&dma_cps=-&dma=0&tag_exp=0~115616986~115938465~115938468~117266401&apve=1&apvf=f&apvc=1&tft=1776806533009&tfd=3464 — 200 — 21 B — 30 ms — h3https://pagead2.googlesyndication.com/ccm/collect?rcb=5&frm=0&en=page_view&dl=https%3A%2F%2Fasm.org%2F&scrsrc=www.googletagmanager.com&rnd=1859005151.1776806533&navt=n&npa=1&us_privacy=1---&_tu=CA&gtm=45be64h1v875605018z876046539za20gzb76046539zd76046539xec&gcs=G100&gcd=13p3p3p3p5l1&dma_cps=-&dma=0&tag_exp=0~115616985~115938465~115938468~117266401&apve=1&apvf=f&apvc=0&tids=AW-855308285&tid=AW-855308285&tft=1776806533011&tfd=3466pagead2.googlesyndication.com/ccm/c... https://pagead2.googlesyndication.com/ccm/collect?rcb=5&frm=0&en=page_view&dl=https%3A%2F%2Fasm.org%2F&scrsrc=www.googletagmanager.com&rnd=1859005151.1776806533&navt=n&npa=1&us_privacy=1---&_tu=CA&gtm=45be64h1v875605018z876046539za20gzb76046539zd76046539xec&gcs=G100&gcd=13p3p3p3p5l1&dma_cps=-&dma=0&tag_exp=0~115616985~115938465~115938468~117266401&apve=1&apvf=f&apvc=0&tids=AW-855308285&tid=AW-855308285&tft=1776806533011&tfd=3466 — 200 — 21 B — 30 ms — h3https://pagead2.googlesyndication.com/ccm/collect?rcb=13&frm=0&en=page_view&dl=https%3A%2F%2Fasm.org%2F&scrsrc=www.googletagmanager.com&rnd=1859005151.1776806533&navt=n&npa=1&us_privacy=1---&_tu=CA&gtm=45be64h1v898313424z876046539za20gzb76046539zd76046539xec&gcs=G100&gcd=13p3p3p3p5l1&dma_cps=-&dma=0&tag_exp=0~115938465~115938469~117266401~117512543~117884344&apve=1&apvf=f&apvc=0&tids=AW-858234627&tid=AW-858234627&tft=1776806533013&tfd=3467pagead2.googlesyndication.com/ccm/c... https://pagead2.googlesyndication.com/ccm/collect?rcb=13&frm=0&en=page_view&dl=https%3A%2F%2Fasm.org%2F&scrsrc=www.googletagmanager.com&rnd=1859005151.1776806533&navt=n&npa=1&us_privacy=1---&_tu=CA&gtm=45be64h1v898313424z876046539za20gzb76046539zd76046539xec&gcs=G100&gcd=13p3p3p3p5l1&dma_cps=-&dma=0&tag_exp=0~115938465~115938469~117266401~117512543~117884344&apve=1&apvf=f&apvc=0&tids=AW-858234627&tid=AW-858234627&tft=1776806533013&tfd=3467 — 200 — 21 B — 24 ms — h3https://eastus2-0.in.applicationinsights.azure.com//v2/trackeastus2-0.in.applicationinsights.az... https://eastus2-0.in.applicationinsights.azure.com//v2/track — 200 — 166 B — 871 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
71% of JavaScript execution is third-party
First-party Third-party 3821ms · 1007KB · €42/mo
Google Tag Manager
Tag Manager
Costly
Execution 967ms
Transfer 173 KB
Unused 33%
Monthly Cost €10/mo
Google Tag Manager
Tag Manager
Costly
Execution 653ms
Transfer 173 KB
Unused 40%
Monthly Cost €7/mo
cmp.osano.com
Other
Costly
Execution 639ms
Transfer 51 KB
Monthly Cost €7/mo
Unattributable
Other
Costly
Execution 493ms
Transfer 0 KB
Monthly Cost €5/mo
Google Tag Manager
Tag Manager
Costly
Execution 296ms
Transfer 167 KB
Unused 38%
Monthly Cost €3/mo
Google Tag Manager
Tag Manager
Costly
Execution 255ms
Transfer 148 KB
Unused 43%
Monthly Cost €3/mo
js.monitor.azure.com
Other
Optional
Execution 157ms
Transfer 46 KB
Monthly Cost €2/mo
Google Tag Manager
Tag Manager
Optional
Execution 102ms
Transfer 167 KB
Unused 71%
Monthly Cost €1/mo
cdn.informz.net
Other
Optional
Execution 97ms
Transfer 22 KB
Monthly Cost €1/mo
ajax.googleapis.com
Other
Optional
Execution 91ms
Transfer 30 KB
Unused 75%
Monthly Cost €1/mo
cmp.osano.com
Other
Optional
Execution 71ms
Transfer 29 KB
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • Google Tag Manager adds 967ms and costs ~€10/month
  • Google Tag Manager adds 653ms and costs ~€7/month
  • cmp.osano.com adds 639ms and costs ~€7/month
  • Unattributable adds 493ms and costs ~€5/month
  • Google Tag Manager adds 296ms and costs ~€3/month
  • Google Tag Manager adds 255ms and costs ~€3/month

71% 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

Google Tag Manager takes 967ms 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 653ms 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

cmp.osano.com takes 639ms 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 493ms 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 296ms 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 255ms 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

71% 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.

Source: web.dev

75% of ajax.googleapis.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

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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