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https://thermofisher.com

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
75
GRADE
C
FIX
3
REVIEW
5
PASS
5
INFO
2

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

Mobile Desktop
60
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
80
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
96
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
85
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.

856 ms

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

2.83 s

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

126 ms

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

0.438

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

1.61 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.

2.97 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 5 REVIEW 3 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 (1.9 MiB of 1.9 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
Page Weight Inventory
Action
160 resources · 1.9 MB · 198 KB savings available
FIX
160 resources · 1.9 MB · 198 KB savings available
Warning::
Page weight 923 KB over 1MB target
Got: 1.9 MB Expected: ≤ 1 MB
Info::
~198 KB of savings available
Warning::
159 third-party resources (100% of weight)
Info::
1 resources over 200KB
160 resources · 1.9 MiB · 159 third-party 923.4 KiB over 1MB target
JavaScript 39% · 753.0 KiB
Image 21% · 416.3 KiB
CSS 19% · 364.0 KiB
Font 14% · 265.0 KiB
Other 4% · 76.9 KiB
Document 4% · 72.3 KiB

~198.0 KiB of savings available

Remove unused JavaScript: 198.0 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
Page Weight Budget
Action
1.9 MB transferred, 160 requests
REVIEW
1.9 MB transferred, 160 requests
Info::
Page weighs 5.4 MB (1.9 MB transferred)
Warning::
JavaScript is 654 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 654 KB
Info::
CSS is 364 KB — consider purging unused styles
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
Got: 364 KB
Info::
Fonts are 265 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 265 KB
Warning::
160 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.40 g CO2 per page load
1.9 MB / 2.4 MB budget
1.9 MB transferred
160 requests
0.40 g CO2 per page load
JavaScript 653.7 KiB 34%
Images 414.3 KiB 21%
CSS 364.0 KiB 19%
Fonts 265.0 KiB 14%
Other 119.3 KiB 6%
HTML 71.7 KiB 4%
Other 56.4 KiB 3%
Other 3.1 KiB 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Approaching limit

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

Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.

Why this matters

CSS bundle is large — purge unused styles (PurgeCSS, Tailwind JIT) to reduce CSS payload.

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

Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.

Why this matters

High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.

Source: web.dev

C
Image Optimization
Action
73 images, 0 KB saveable
REVIEW
73 images, 0 KB saveable
Warning::
https://consent-insights-3c23a978f31a.herokuapp.co... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.thermofisher.com/TFS-Assets/LSG/pro... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.thermofisher.com/TFS-Assets/LSG/pro... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.thermofisher.com/TFS-Assets/LSG/pro... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.thermofisher.com/TFS-Assets/LSG/pro... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.thermofisher.com/TFS-Assets/LSG/pro... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.thermofisher.com/TFS-Assets/LSG/pro... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.thermofisher.com/TFS-Assets/BID/pro... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.thermofisher.com/TFS-Assets/LSG/pro... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.thermofisher.com/TFS-Assets/LSG/pro... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.thermofisher.com/TFS-Assets/LSG/pro... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.thermofisher.com/TFS-Assets/LSG/pro... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.thermofisher.com/content/dam/LifeTech/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.thermofisher.com/store/global-header-f... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.thermofisher.com/TFS-Assets/LSG/pro... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.thermofisher.com/TFS-Assets/LSG/pro... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.thermofisher.com/TFS-Assets/LSG/pro... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.thermofisher.com/TFS-Assets/LSG/pro... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.thermofisher.com/TFS-Assets/LSG/pro... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.thermofisher.com/TFS-Assets/LSG/pro... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.thermofisher.com/TFS-Assets/BID/pro... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.thermofisher.com/blog/wp-content/uploa... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.thermofisher.com/blog/wp-content/uploa... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.thermofisher.com/TFS-Assets/BID/pro... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.thermofisher.com/TFS-Assets/LSG/pro... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.thermofisher.com/TFS-Assets/LSG/pro... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.thermofisher.com/TFS-Assets/CCG/The... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.thermofisher.com/TFS-Assets/BID/pro... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.thermofisher.com/TFS-Assets/LSG/pro... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.thermofisher.com/TFS-Assets/LSG/pro... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://consent-insights-3c23a978f31a.herokuapp.co... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.thermofisher.com/TFS-Assets/LED/pro... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.thermofisher.com/TFS-Assets/LSG/pro... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.thermofisher.com/TFS-Assets/LSG/pro... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.thermofisher.com/blog/wp-content/uploa... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.thermofisher.com/TFS-Assets/LSG/pro... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.thermofisher.com/TFS-Assets/BID/pro... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.thermofisher.com/TFS-Assets/BID/pro... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
73 images 414 KB
0 oversized -0 KB
17 legacy format
38 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

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

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

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

C
JS Execution Cost
Action
1660ms total JS execution
REVIEW
1660ms total JS execution
Warning::
https://www.thermofisher.com/us/en/home.html: 529ms CPU time
Warning::
Unattributable: 392ms CPU time
Warning::
https://www.thermofisher.com/2BV563CzQeVx21jTBA/hw...: 388ms CPU time
Info::
https://assets.adobedtm.com/7e08552ade3f/1a8047d2b...: 193ms CPU time
Info::
https://www.thermofisher.com/store/global-header-f...: 102ms CPU time
Warning::
Third-party scripts: 1660ms (100% of total)

Main Thread Breakdown

Script Evaluation 50% Other 20% Style & Layout 15% Script Parsing & Compilation 5% Parse HTML & CSS 4% Rendering 4%
ScriptTotalScriptingParse/CompileParty
https://www.thermofisher.com/us/en/home.html529ms147ms18ms3rd
Unattributable392ms55ms0ms3rd
https://www.thermofisher.com/2BV563CzQeVx21jTBA/hwiELf9Yb1w1/fARXBBIUJAo/SxI/-W1pkOVUPAg?v=0c951b89-7a7d-b55d-15b4-1c4007241734388ms354ms15ms3rd
https://assets.adobedtm.com/7e08552ade3f/1a8047d2b483/launch-f46125d37e44.min.js193ms98ms12ms3rd
https://www.thermofisher.com/store/global-header-footer-static/tf/js/utilities.min.2fcc55055ffa73.js102ms96ms2ms3rd
https://www.thermofisher.com/designsystem-cdn/libraries/core/komodo-core-web-components-3-29-0-beta/dist/core/p-Bq5HM40R.js56ms49ms0ms3rd
C
JS Bundles
Action
40 scripts, 198 KB unused
REVIEW
40 scripts, 198 KB unused
Warning::
https://cdn.userway.org/widgetapp/2022-01-10/remed...: 36 KB unused (94%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.userway.org/widgetapp/2022-01-10/widge...: 31 KB unused (58%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.thermofisher.com/2BV563CzQeVx21jTBA/hw...: 30 KB unused (20%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn1.adoberesources.net/alloy/2.23.0/alloy...: 29 KB unused (86%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://consent.trustarc.com/asset/thermofisher-cu...: 26 KB unused (71%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 198 KB
198 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://cdn.userway.org/widgetapp/2022-01-10/remediation/remediation_1641814805298.js39 KB36 KB (94%)✓3rd
https://cdn.userway.org/widgetapp/2022-01-10/widget_app_1641814805298.js53 KB31 KB (58%)✓3rd
https://www.thermofisher.com/2BV563CzQeVx21jTBA/hwiELf9Yb1w1/fARXBBIUJAo/SxI/-W1pkOVUPAg?v=0c951b89-7a7d-b55d-15b4-1c4007241734149 KB30 KB (20%)✓3rd
https://cdn1.adoberesources.net/alloy/2.23.0/alloy.min.js35 KB29 KB (86%)✓3rd
https://consent.trustarc.com/asset/thermofisher-custom-js.js/v/v1.7-172936 KB26 KB (71%)✓3rd
https://www.thermofisher.com/etc/designs/komodo/clientlibs/base-jquery.min.8d1dd693277adc2d7ac11a3e46026056.js45 KB25 KB (55%)✓3rd
https://assets.adobedtm.com/7e08552ade3f/1a8047d2b483/launch-f46125d37e44.min.js73 KB21 KB (29%)✓3rd
https://consent.truste.com/notice?c=teconsent&pcookie=true&js=nj&gtm=true&noticeType=bb&text=true&domain=thermofisher.com&country=us&language=en&privacypolicylink=https://www.thermofisher.com/us/en/home/global/privacy-policy.html&cookieLink=https://www.thermofisher.com/us/en/home/global/how-cookies-are-used.html14 KB—✓3rd
blob:https://www.thermofisher.com/5e95111c-46cd-4f4d-b528-9b3b767ef027-0 KB—✓3rd
https://www.thermofisher.com/etc.clientlibs/tfsite/clientlibs/clientlib-site.min.0da5380b21c31406f3efe7abb1658c8d.js4 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

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
9 fonts (265 KB)
PASS
9 fonts (265 KB)
Info::
9 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

9

265 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 500 ms 1.0 s 1.5 s 2.0 s 2.5 s FCP 856 ms LCP 2.8 shttps://tfux.thermofisher.com/cdn/fonts/v2/HelveticaNeueforTFS.woff2HelveticaNeueforTFS.woff2 https://tfux.thermofisher.com/cdn/fonts/v2/HelveticaNeueforTFS.woff2 — 39.1 KiB — 17 ms — font-display: swaphttps://www.thermofisher.com/designsystem-cdn/fonts/HelveticaNeueLTW01-65Medium.woff2HelveticaNeueLTW01-65Me... https://www.thermofisher.com/designsystem-cdn/fonts/HelveticaNeueLTW01-65Medium.woff2 — 17.6 KiB — 16 ms — font-display: swaphttps://www.thermofisher.com/designsystem-cdn/fonts/HelveticaNeueLTW01-55Roman.woff2HelveticaNeueLTW01-55Ro... https://www.thermofisher.com/designsystem-cdn/fonts/HelveticaNeueLTW01-55Roman.woff2 — 17.5 KiB — 32 ms — font-display: swaphttps://www.thermofisher.com/designsystem-cdn/fonts/HelveticaNeueLTW01-75Bold.woff2HelveticaNeueLTW01-75Bo... https://www.thermofisher.com/designsystem-cdn/fonts/HelveticaNeueLTW01-75Bold.woff2 — 17.6 KiB — 12 ms — font-display: swaphttps://tfux.thermofisher.com/cdn/fonts/v2/HelveticaNeueforTFS-Bd.woff2HelveticaNeueforTFS-Bd.... https://tfux.thermofisher.com/cdn/fonts/v2/HelveticaNeueforTFS-Bd.woff2 — 39.0 KiB — 31 ms — font-display: swaphttps://tfux.thermofisher.com/cdn/fonts/v2/HelveticaNeueforTFS-Md.woff2HelveticaNeueforTFS-Md.... https://tfux.thermofisher.com/cdn/fonts/v2/HelveticaNeueforTFS-Md.woff2 — 39.8 KiB — 36 ms — font-display: swaphttps://tfux.thermofisher.com/cdn/fonts/v2/HelveticaNeueforTFS-Lt.woff2HelveticaNeueforTFS-Lt.... https://tfux.thermofisher.com/cdn/fonts/v2/HelveticaNeueforTFS-Lt.woff2 — 38.4 KiB — 39 ms — font-display: swaphttps://tfux.thermofisher.com/cdn/fonts/v2/HelveticaNeueforTFS-Th.woff2HelveticaNeueforTFS-Th.... https://tfux.thermofisher.com/cdn/fonts/v2/HelveticaNeueforTFS-Th.woff2 — 38.6 KiB — 41 ms — font-display: swaphttps://www.thermofisher.com/designsystem-cdn/fonts/HelveticaNeueLTW01-45Light.woff2HelveticaNeueLTW01-45Li... https://www.thermofisher.com/designsystem-cdn/fonts/HelveticaNeueLTW01-45Light.woff2 — 17.3 KiB — 21 ms — font-display: swap
HelveticaNeueforTFS.woff2 woff2 swap
Size 39 KB
Load time 17 ms
Start 417 ms
Risk FOUT — text flashes from fallback to web font
HelveticaNeueLTW01-65Me... woff2 swap
Size 18 KB
Load time 16 ms
Start 461 ms
Risk FOUT — text flashes from fallback to web font
HelveticaNeueLTW01-55Ro... woff2 swap
Size 17 KB
Load time 32 ms
Start 462 ms
Risk FOUT — text flashes from fallback to web font
HelveticaNeueLTW01-75Bo... woff2 swap
Size 18 KB
Load time 12 ms
Start 527 ms
Risk FOUT — text flashes from fallback to web font
HelveticaNeueforTFS-Bd.... woff2 swap
Size 39 KB
Load time 31 ms
Start 1.2 s
Risk FOUT — text flashes from fallback to web font
HelveticaNeueforTFS-Md.... woff2 swap
Size 40 KB
Load time 36 ms
Start 1.2 s
Risk FOUT — text flashes from fallback to web font
HelveticaNeueforTFS-Lt.... woff2 swap
Size 38 KB
Load time 39 ms
Start 1.2 s
Risk FOUT — text flashes from fallback to web font
HelveticaNeueforTFS-Th.... woff2 swap
Size 39 KB
Load time 41 ms
Start 1.2 s
Risk FOUT — text flashes from fallback to web font
HelveticaNeueLTW01-45Li... woff2 swap
Size 17 KB
Load time 21 ms
Start 1.8 s
Risk FOUT — 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)
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
160 requests over 7210ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s 7.0 s FCP 856 ms LCP 2.8 shttps://thermofisher.com// https://thermofisher.com/ — 301 — 133 B — 89 ms — http/1.0https://www.thermofisher.com/www.thermofisher.com/ https://www.thermofisher.com/ — 301 — 1.8 KiB — 39 ms — h2https://www.thermofisher.com/us/en/home.htmlwww.thermofisher.com/us/en/home.htm... https://www.thermofisher.com/us/en/home.html — 200 — 71.7 KiB — 45 ms — h2https://www.thermofisher.com/etc.clientlibs/tfsite/clientlibs/clientlib-base.min.4e86bddcd70a52efb4f582f26a4738f9.csswww.thermofisher.com/etc.clientlibs... https://www.thermofisher.com/etc.clientlibs/tfsite/clientlibs/clientlib-base.min.4e86bddcd70a52efb4f582f26a4738f9.css — 200 — 6.6 KiB — 22 ms — h2https://www.thermofisher.com/etc.clientlibs/tfsite/clientlibs/clientlib-dependencies.min.d41d8cd98f00b204e9800998ecf8427e.csswww.thermofisher.com/etc.clientlibs... https://www.thermofisher.com/etc.clientlibs/tfsite/clientlibs/clientlib-dependencies.min.d41d8cd98f00b204e9800998ecf8427e.css — 200 — 316 B — 33 ms — h2https://www.thermofisher.com/etc.clientlibs/tfsite/clientlibs/clientlib-site.min.179751e29605006ed2d18570bf17502c.csswww.thermofisher.com/etc.clientlibs... https://www.thermofisher.com/etc.clientlibs/tfsite/clientlibs/clientlib-site.min.179751e29605006ed2d18570bf17502c.css — 200 — 29.2 KiB — 37 ms — h2https://www.thermofisher.com/etc/designs/komodo/clientlibs/base-jquery.min.8d1dd693277adc2d7ac11a3e46026056.jswww.thermofisher.com/etc/designs/ko... https://www.thermofisher.com/etc/designs/komodo/clientlibs/base-jquery.min.8d1dd693277adc2d7ac11a3e46026056.js — 200 — 44.8 KiB — 49 ms — h2https://tfux.thermofisher.com/cdn/fonts/v2/kmd-fonts.csstfux.thermofisher.com/cdn/fonts/v2/... https://tfux.thermofisher.com/cdn/fonts/v2/kmd-fonts.css — 200 — 953 B — 184 ms — h2https://www.thermofisher.com/designsystem-cdn/design-tokens/variables.csswww.thermofisher.com/designsystem-c... https://www.thermofisher.com/designsystem-cdn/design-tokens/variables.css — 200 — 2.6 KiB — 35 ms — h2https://www.thermofisher.com/dm-offers/dm-offer-style.csswww.thermofisher.com/dm-offers/dm-o... https://www.thermofisher.com/dm-offers/dm-offer-style.css — 200 — 11.4 KiB — 39 ms — h2https://www.thermofisher.com/store/global-header-footer-static/tf/js/lt.2fcc55055ffa73.jswww.thermofisher.com/store/global-h... https://www.thermofisher.com/store/global-header-footer-static/tf/js/lt.2fcc55055ffa73.js — 200 — 9.0 KiB — 44 ms — h2https://www.thermofisher.com/store/global-header-footer-static/global/svg/external-link-bold.svgwww.thermofisher.com/store/global-h... https://www.thermofisher.com/store/global-header-footer-static/global/svg/external-link-bold.svg — 200 — 673 B — 46 ms — h2https://www.thermofisher.com/store/minicartv3/minicart.jswww.thermofisher.com/store/minicart... https://www.thermofisher.com/store/minicartv3/minicart.js — 200 — 11.7 KiB — 28 ms — h2https://www.thermofisher.com/store/v3/web-components/cart-nudge.jswww.thermofisher.com/store/v3/web-c... https://www.thermofisher.com/store/v3/web-components/cart-nudge.js — 200 — 1.9 KiB — 28 ms — h2https://www.thermofisher.com/designsystem-cdn/text-comp-icons/style.csswww.thermofisher.com/designsystem-c... https://www.thermofisher.com/designsystem-cdn/text-comp-icons/style.css — 200 — 840 B — 22 ms — h2https://www.thermofisher.com/designsystem-cdn/css/komodo-icons.csswww.thermofisher.com/designsystem-c... https://www.thermofisher.com/designsystem-cdn/css/komodo-icons.css — 200 — 8.7 KiB — 24 ms — h2https://identity.thermofisher.com/account-center/scripts/identityGlobal.min.jsidentity.thermofisher.com/account-c... https://identity.thermofisher.com/account-center/scripts/identityGlobal.min.js — 200 — 4.2 KiB — 22 ms — h2https://www.thermofisher.com/etc.clientlibs/corpcommons/clientlibs/polyfill.min.ced9a8b849fe1541e09ff528e4c65acf.jswww.thermofisher.com/etc.clientlibs... https://www.thermofisher.com/etc.clientlibs/corpcommons/clientlibs/polyfill.min.ced9a8b849fe1541e09ff528e4c65acf.js — 200 — 2.2 KiB — 11 ms — h2https://www.thermofisher.com/etc/designs/komodo/clientlibs/base-bootstrap.min.194d136e59bbf72484d27bf189ac0794.jswww.thermofisher.com/etc/designs/ko... https://www.thermofisher.com/etc/designs/komodo/clientlibs/base-bootstrap.min.194d136e59bbf72484d27bf189ac0794.js — 200 — 16.4 KiB — 11 ms — h2https://www.thermofisher.com/etc/designs/komodo/clientlibs/base-addons.min.3b6dd4e5f4734fac5549772c44ff53fc.csswww.thermofisher.com/etc/designs/ko... https://www.thermofisher.com/etc/designs/komodo/clientlibs/base-addons.min.3b6dd4e5f4734fac5549772c44ff53fc.css — 200 — 3.9 KiB — 19 ms — h2https://www.thermofisher.com/etc.clientlibs/tfsite/clientlibs/clientlib-base.min.c5016c058b5b5fee04bec5b9f984bb9b.jswww.thermofisher.com/etc.clientlibs... https://www.thermofisher.com/etc.clientlibs/tfsite/clientlibs/clientlib-base.min.c5016c058b5b5fee04bec5b9f984bb9b.js — 200 — 9.7 KiB — 13 ms — h2https://www.thermofisher.com/etc.clientlibs/tfsite/clientlibs/clientlib-dependencies.min.d41d8cd98f00b204e9800998ecf8427e.jswww.thermofisher.com/etc.clientlibs... https://www.thermofisher.com/etc.clientlibs/tfsite/clientlibs/clientlib-dependencies.min.d41d8cd98f00b204e9800998ecf8427e.js — 200 — 326 B — 22 ms — h2https://www.thermofisher.com/etc.clientlibs/tfsite/clientlibs/clientlib-site.min.0da5380b21c31406f3efe7abb1658c8d.jswww.thermofisher.com/etc.clientlibs... https://www.thermofisher.com/etc.clientlibs/tfsite/clientlibs/clientlib-site.min.0da5380b21c31406f3efe7abb1658c8d.js — 200 — 4.0 KiB — 14 ms — h2https://www.thermofisher.com/akam/13/7b39edf2www.thermofisher.com/akam/13/7b39ed... https://www.thermofisher.com/akam/13/7b39edf2 — 200 — 9.4 KiB — 7 ms — h2https://cdn1.adoberesources.net/alloy/2.23.0/alloy.min.jscdn1.adoberesources.net/alloy/2.23.... https://cdn1.adoberesources.net/alloy/2.23.0/alloy.min.js — 200 — 34.5 KiB — 337 ms — h2https://www.thermofisher.com/store/global-header-footer-static/tf/js/utilities.min.2fcc55055ffa73.jswww.thermofisher.com/store/global-h... https://www.thermofisher.com/store/global-header-footer-static/tf/js/utilities.min.2fcc55055ffa73.js — 200 — 5.9 KiB — 11 ms — h2https://www.thermofisher.com/search/static/resources/js/signals.min.jswww.thermofisher.com/search/static/... https://www.thermofisher.com/search/static/resources/js/signals.min.js — 200 — 3.2 KiB — 24 ms — h2https://www.thermofisher.com/shared-static/scripts/global-functions-fallback.jswww.thermofisher.com/shared-static/... https://www.thermofisher.com/shared-static/scripts/global-functions-fallback.js — 200 — 1.6 KiB — 25 ms — h2https://www.thermofisher.com/shared-static/scripts/global-variables-fallback.jswww.thermofisher.com/shared-static/... https://www.thermofisher.com/shared-static/scripts/global-variables-fallback.js — 200 — 8.0 KiB — 27 ms — h2https://www.thermofisher.com/store/global-header-footer-static/global/images/flags/us.gifwww.thermofisher.com/store/global-h... https://www.thermofisher.com/store/global-header-footer-static/global/images/flags/us.gif — 200 — 382 B — 29 ms — h2
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s 7.0 s FCP 856 ms LCP 2.8 shttps://thermofisher.com// https://thermofisher.com/ — 301 — 133 B — 89 ms — http/1.0https://www.thermofisher.com/www.thermofisher.com/ https://www.thermofisher.com/ — 301 — 1.8 KiB — 39 ms — h2https://www.thermofisher.com/us/en/home.htmlwww.thermofisher.com/us/en/home.htm... https://www.thermofisher.com/us/en/home.html — 200 — 71.7 KiB — 45 ms — h2https://www.thermofisher.com/etc.clientlibs/tfsite/clientlibs/clientlib-base.min.4e86bddcd70a52efb4f582f26a4738f9.csswww.thermofisher.com/etc.clientlibs... https://www.thermofisher.com/etc.clientlibs/tfsite/clientlibs/clientlib-base.min.4e86bddcd70a52efb4f582f26a4738f9.css — 200 — 6.6 KiB — 22 ms — h2https://www.thermofisher.com/etc.clientlibs/tfsite/clientlibs/clientlib-dependencies.min.d41d8cd98f00b204e9800998ecf8427e.csswww.thermofisher.com/etc.clientlibs... https://www.thermofisher.com/etc.clientlibs/tfsite/clientlibs/clientlib-dependencies.min.d41d8cd98f00b204e9800998ecf8427e.css — 200 — 316 B — 33 ms — h2https://www.thermofisher.com/etc.clientlibs/tfsite/clientlibs/clientlib-site.min.179751e29605006ed2d18570bf17502c.csswww.thermofisher.com/etc.clientlibs... https://www.thermofisher.com/etc.clientlibs/tfsite/clientlibs/clientlib-site.min.179751e29605006ed2d18570bf17502c.css — 200 — 29.2 KiB — 37 ms — h2https://www.thermofisher.com/etc/designs/komodo/clientlibs/base-jquery.min.8d1dd693277adc2d7ac11a3e46026056.jswww.thermofisher.com/etc/designs/ko... https://www.thermofisher.com/etc/designs/komodo/clientlibs/base-jquery.min.8d1dd693277adc2d7ac11a3e46026056.js — 200 — 44.8 KiB — 49 ms — h2https://tfux.thermofisher.com/cdn/fonts/v2/kmd-fonts.csstfux.thermofisher.com/cdn/fonts/v2/... https://tfux.thermofisher.com/cdn/fonts/v2/kmd-fonts.css — 200 — 953 B — 184 ms — h2https://www.thermofisher.com/designsystem-cdn/design-tokens/variables.csswww.thermofisher.com/designsystem-c... https://www.thermofisher.com/designsystem-cdn/design-tokens/variables.css — 200 — 2.6 KiB — 35 ms — h2https://www.thermofisher.com/dm-offers/dm-offer-style.csswww.thermofisher.com/dm-offers/dm-o... https://www.thermofisher.com/dm-offers/dm-offer-style.css — 200 — 11.4 KiB — 39 ms — h2https://www.thermofisher.com/store/global-header-footer-static/tf/js/lt.2fcc55055ffa73.jswww.thermofisher.com/store/global-h... https://www.thermofisher.com/store/global-header-footer-static/tf/js/lt.2fcc55055ffa73.js — 200 — 9.0 KiB — 44 ms — h2https://www.thermofisher.com/store/global-header-footer-static/global/svg/external-link-bold.svgwww.thermofisher.com/store/global-h... https://www.thermofisher.com/store/global-header-footer-static/global/svg/external-link-bold.svg — 200 — 673 B — 46 ms — h2https://www.thermofisher.com/store/minicartv3/minicart.jswww.thermofisher.com/store/minicart... https://www.thermofisher.com/store/minicartv3/minicart.js — 200 — 11.7 KiB — 28 ms — h2https://www.thermofisher.com/store/v3/web-components/cart-nudge.jswww.thermofisher.com/store/v3/web-c... https://www.thermofisher.com/store/v3/web-components/cart-nudge.js — 200 — 1.9 KiB — 28 ms — h2https://www.thermofisher.com/designsystem-cdn/text-comp-icons/style.csswww.thermofisher.com/designsystem-c... https://www.thermofisher.com/designsystem-cdn/text-comp-icons/style.css — 200 — 840 B — 22 ms — h2https://www.thermofisher.com/designsystem-cdn/css/komodo-icons.csswww.thermofisher.com/designsystem-c... https://www.thermofisher.com/designsystem-cdn/css/komodo-icons.css — 200 — 8.7 KiB — 24 ms — h2https://identity.thermofisher.com/account-center/scripts/identityGlobal.min.jsidentity.thermofisher.com/account-c... https://identity.thermofisher.com/account-center/scripts/identityGlobal.min.js — 200 — 4.2 KiB — 22 ms — h2https://www.thermofisher.com/etc.clientlibs/corpcommons/clientlibs/polyfill.min.ced9a8b849fe1541e09ff528e4c65acf.jswww.thermofisher.com/etc.clientlibs... https://www.thermofisher.com/etc.clientlibs/corpcommons/clientlibs/polyfill.min.ced9a8b849fe1541e09ff528e4c65acf.js — 200 — 2.2 KiB — 11 ms — h2https://www.thermofisher.com/etc/designs/komodo/clientlibs/base-bootstrap.min.194d136e59bbf72484d27bf189ac0794.jswww.thermofisher.com/etc/designs/ko... https://www.thermofisher.com/etc/designs/komodo/clientlibs/base-bootstrap.min.194d136e59bbf72484d27bf189ac0794.js — 200 — 16.4 KiB — 11 ms — h2https://www.thermofisher.com/etc/designs/komodo/clientlibs/base-addons.min.3b6dd4e5f4734fac5549772c44ff53fc.csswww.thermofisher.com/etc/designs/ko... https://www.thermofisher.com/etc/designs/komodo/clientlibs/base-addons.min.3b6dd4e5f4734fac5549772c44ff53fc.css — 200 — 3.9 KiB — 19 ms — h2https://www.thermofisher.com/etc.clientlibs/tfsite/clientlibs/clientlib-base.min.c5016c058b5b5fee04bec5b9f984bb9b.jswww.thermofisher.com/etc.clientlibs... https://www.thermofisher.com/etc.clientlibs/tfsite/clientlibs/clientlib-base.min.c5016c058b5b5fee04bec5b9f984bb9b.js — 200 — 9.7 KiB — 13 ms — h2https://www.thermofisher.com/etc.clientlibs/tfsite/clientlibs/clientlib-dependencies.min.d41d8cd98f00b204e9800998ecf8427e.jswww.thermofisher.com/etc.clientlibs... https://www.thermofisher.com/etc.clientlibs/tfsite/clientlibs/clientlib-dependencies.min.d41d8cd98f00b204e9800998ecf8427e.js — 200 — 326 B — 22 ms — h2https://www.thermofisher.com/etc.clientlibs/tfsite/clientlibs/clientlib-site.min.0da5380b21c31406f3efe7abb1658c8d.jswww.thermofisher.com/etc.clientlibs... https://www.thermofisher.com/etc.clientlibs/tfsite/clientlibs/clientlib-site.min.0da5380b21c31406f3efe7abb1658c8d.js — 200 — 4.0 KiB — 14 ms — h2https://www.thermofisher.com/akam/13/7b39edf2www.thermofisher.com/akam/13/7b39ed... https://www.thermofisher.com/akam/13/7b39edf2 — 200 — 9.4 KiB — 7 ms — h2https://cdn1.adoberesources.net/alloy/2.23.0/alloy.min.jscdn1.adoberesources.net/alloy/2.23.... https://cdn1.adoberesources.net/alloy/2.23.0/alloy.min.js — 200 — 34.5 KiB — 337 ms — h2https://www.thermofisher.com/store/global-header-footer-static/tf/js/utilities.min.2fcc55055ffa73.jswww.thermofisher.com/store/global-h... https://www.thermofisher.com/store/global-header-footer-static/tf/js/utilities.min.2fcc55055ffa73.js — 200 — 5.9 KiB — 11 ms — h2https://www.thermofisher.com/search/static/resources/js/signals.min.jswww.thermofisher.com/search/static/... https://www.thermofisher.com/search/static/resources/js/signals.min.js — 200 — 3.2 KiB — 24 ms — h2https://www.thermofisher.com/shared-static/scripts/global-functions-fallback.jswww.thermofisher.com/shared-static/... https://www.thermofisher.com/shared-static/scripts/global-functions-fallback.js — 200 — 1.6 KiB — 25 ms — h2https://www.thermofisher.com/shared-static/scripts/global-variables-fallback.jswww.thermofisher.com/shared-static/... https://www.thermofisher.com/shared-static/scripts/global-variables-fallback.js — 200 — 8.0 KiB — 27 ms — h2https://www.thermofisher.com/store/global-header-footer-static/global/images/flags/us.gifwww.thermofisher.com/store/global-h... https://www.thermofisher.com/store/global-header-footer-static/global/images/flags/us.gif — 200 — 382 B — 29 ms — h2https://www.thermofisher.com/store/global-header-footer-static/tf/js/footer-base.min.2fcc55055ffa73.jswww.thermofisher.com/store/global-h... https://www.thermofisher.com/store/global-header-footer-static/tf/js/footer-base.min.2fcc55055ffa73.js — 200 — 811 B — 32 ms — h2https://www.thermofisher.com/dm-offers/offers.min.jswww.thermofisher.com/dm-offers/offe... https://www.thermofisher.com/dm-offers/offers.min.js — 200 — 20.1 KiB — 42 ms — 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https://assets.thermofisher.com/TFS-Assets/LSG/product-images/23-6973318-A5256701-STD-00-1280x1280.jpeg-150.jpg — 200 — 3.2 KiB — 30 ms — h2https://assets.thermofisher.com/TFS-Assets/BID/product-images/11875093_650x600.jpg-150.jpgassets.thermofisher.com/TFS-Assets/... https://assets.thermofisher.com/TFS-Assets/BID/product-images/11875093_650x600.jpg-150.jpg — 200 — 2.0 KiB — 31 ms — h2https://assets.thermofisher.com/TFS-Assets/LSG/product-images/NP0005_650x600.jpg-150.jpgassets.thermofisher.com/TFS-Assets/... https://assets.thermofisher.com/TFS-Assets/LSG/product-images/NP0005_650x600.jpg-150.jpg — 200 — 1.0 KiB — 38 ms — h2https://assets.thermofisher.com/TFS-Assets/CCG/product-images/F71071_p.eps-150.jpgassets.thermofisher.com/TFS-Assets/... https://assets.thermofisher.com/TFS-Assets/CCG/product-images/F71071_p.eps-150.jpg — 200 — 3.4 KiB — 34 ms — h2https://assets.thermofisher.com/TFS-Assets/LSG/product-images/S33102_650x600.jpg-150.jpgassets.thermofisher.com/TFS-Assets/... https://assets.thermofisher.com/TFS-Assets/LSG/product-images/S33102_650x600.jpg-150.jpg — 200 — 3.9 KiB — 26 ms — h2https://assets.thermofisher.com/TFS-Assets/CAD/product-images/truscan-g3-1000x1000.jpg-150.jpgassets.thermofisher.com/TFS-Assets/... https://assets.thermofisher.com/TFS-Assets/CAD/product-images/truscan-g3-1000x1000.jpg-150.jpg — 200 — 1.9 KiB — 23 ms — h2https://assets.thermofisher.com/TFS-Assets/CAD/product-images/anstat-430-1.jpg-150.jpgassets.thermofisher.com/TFS-Assets/... https://assets.thermofisher.com/TFS-Assets/CAD/product-images/anstat-430-1.jpg-150.jpg — 200 — 2.1 KiB — 25 ms — h2https://assets.thermofisher.com/TFS-Assets/LSG/product-images/35050061-STD-00-1280x1280.jpeg-150.jpgassets.thermofisher.com/TFS-Assets/... https://assets.thermofisher.com/TFS-Assets/LSG/product-images/35050061-STD-00-1280x1280.jpeg-150.jpg — 200 — 3.0 KiB — 27 ms — 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https://assets.thermofisher.com/TFS-Assets/LSG/product-images/11320033-STD-00-1280x1280.jpeg-150.jpg — 200 — 2.9 KiB — 30 ms — h2https://assets.thermofisher.com/TFS-Assets/BID/product-images/bender_bag_with_5_ml_glass_amber_bottle.jpg-150.jpgassets.thermofisher.com/TFS-Assets/... https://assets.thermofisher.com/TFS-Assets/BID/product-images/bender_bag_with_5_ml_glass_amber_bottle.jpg-150.jpg — 200 — 2.3 KiB — 21 ms — h2https://api.userway.org/api/tunings/P3pDlQucOzapi.userway.org/api/tunings/P3pDlQu... https://api.userway.org/api/tunings/P3pDlQucOz — 200 — 3.1 KiB — 193 ms — h2https://assets.thermofisher.com/TFS-Assets/CAD/product-images/sentinel-4000d-1.jpg-150.jpgassets.thermofisher.com/TFS-Assets/... https://assets.thermofisher.com/TFS-Assets/CAD/product-images/sentinel-4000d-1.jpg-150.jpg — 200 — 1.9 KiB — 17 ms — h2https://assets.thermofisher.com/TFS-Assets/LSG/product-images/14190144-STD-00-1280x1280.jpeg-150.jpgassets.thermofisher.com/TFS-Assets/... https://assets.thermofisher.com/TFS-Assets/LSG/product-images/14190144-STD-00-1280x1280.jpeg-150.jpg — 200 — 2.7 KiB — 27 ms — h2https://assets.thermofisher.com/TFS-Assets/LSG/product-images/M36008_0630.jpg-150.jpgassets.thermofisher.com/TFS-Assets/... https://assets.thermofisher.com/TFS-Assets/LSG/product-images/M36008_0630.jpg-150.jpg — 200 — 2.2 KiB — 28 ms — h2https://assets.thermofisher.com/TFS-Assets/LSG/product-images/00552300-650x600.jpg-150.jpgassets.thermofisher.com/TFS-Assets/... https://assets.thermofisher.com/TFS-Assets/LSG/product-images/00552300-650x600.jpg-150.jpg — 200 — 3.2 KiB — 23 ms — h2https://consent-insights-3c23a978f31a.herokuapp.com/api/v1/impressions/capture?api_key=CI-3929813243&secret=810274278902470721624405905887912991104270295366493143855663183685375235160482241511078341257235422202822656000&country=us&language=en&visit_id=e77d94b6-7a1d-44d6-8b03-270d8728e554&ut=NEW&ua=Mozilla%2F5.0+%28Macintosh%3B+Intel+Mac+OS+X+10_15_7%29+AppleWebKit%2F537.36+%28KHTML%2C+like+Gecko%29+Chrome%2F146.0.0.0+Safari%2F537.36&title=Thermo+Fisher+Scientific+-+US&url=https%3A%2F%2Fwww.thermofisher.com%2Fus%2Fen%2Fhome.htmlconsent-insights-3c23a978f31a.herok... https://consent-insights-3c23a978f31a.herokuapp.com/api/v1/impressions/capture?api_key=CI-3929813243&secret=810274278902470721624405905887912991104270295366493143855663183685375235160482241511078341257235422202822656000&country=us&language=en&visit_id=e77d94b6-7a1d-44d6-8b03-270d8728e554&ut=NEW&ua=Mozilla%2F5.0+%28Macintosh%3B+Intel+Mac+OS+X+10_15_7%29+AppleWebKit%2F537.36+%28KHTML%2C+like+Gecko%29+Chrome%2F146.0.0.0+Safari%2F537.36&title=Thermo+Fisher+Scientific+-+US&url=https%3A%2F%2Fwww.thermofisher.com%2Fus%2Fen%2Fhome.html — 200 — 1.3 KiB — 27 ms — http/1.1https://www.thermofisher.com/api/store/recommendations/recommendation/target/attributeswww.thermofisher.com/api/store/reco... https://www.thermofisher.com/api/store/recommendations/recommendation/target/attributes — 200 — 1.1 KiB — 44 ms — h2https://www.thermofisher.com/designsystem-cdn/libraries/core/komodo-core-web-components-3-29-0-beta/dist/core/p-Bq5HM40R.jswww.thermofisher.com/designsystem-c... https://www.thermofisher.com/designsystem-cdn/libraries/core/komodo-core-web-components-3-29-0-beta/dist/core/p-Bq5HM40R.js — 200 — 12.3 KiB — 16 ms — h2https://www.thermofisher.com/api/store/recommendations/recommendation/target/attributeswww.thermofisher.com/api/store/reco... https://www.thermofisher.com/api/store/recommendations/recommendation/target/attributes — 200 — 1.1 KiB — 40 ms — h2https://www.thermofisher.com/designsystem-cdn/libraries/core/komodo-core-web-components-3-29-0-beta/dist/core/p-3542f377.entry.jswww.thermofisher.com/designsystem-c... https://www.thermofisher.com/designsystem-cdn/libraries/core/komodo-core-web-components-3-29-0-beta/dist/core/p-3542f377.entry.js — 200 — 25.0 KiB — 14 ms — h2https://www.thermofisher.com/designsystem-cdn/libraries/core/komodo-core-web-components-3-29-0-beta/dist/core/p-ImEnqWB0.jswww.thermofisher.com/designsystem-c... https://www.thermofisher.com/designsystem-cdn/libraries/core/komodo-core-web-components-3-29-0-beta/dist/core/p-ImEnqWB0.js — 200 — 579 B — 22 ms — h2https://www.thermofisher.com/designsystem-cdn/libraries/core/komodo-core-web-components-3-29-0-beta/dist/core/p-D5SdaplC.jswww.thermofisher.com/designsystem-c... https://www.thermofisher.com/designsystem-cdn/libraries/core/komodo-core-web-components-3-29-0-beta/dist/core/p-D5SdaplC.js — 200 — 2.0 KiB — 36 ms — h2https://www.thermofisher.com/designsystem-cdn/libraries/core/komodo-core-web-components-3-29-0-beta/dist/core/p-DFzFS5i9.jswww.thermofisher.com/designsystem-c... https://www.thermofisher.com/designsystem-cdn/libraries/core/komodo-core-web-components-3-29-0-beta/dist/core/p-DFzFS5i9.js — 200 — 612 B — 34 ms — h2blob:https://www.thermofisher.com/1608604c-1a8d-4086-be05-378e48d3049fwww.thermofisher.com/1608604c-1a8d-... blob:https://www.thermofisher.com/1608604c-1a8d-4086-be05-378e48d3049f — -1 — 0 B — 0 ms — https://www.thermofisher.com/designsystem-cdn/fonts/HelveticaNeueLTW01-45Light.woff2www.thermofisher.com/designsystem-c... https://www.thermofisher.com/designsystem-cdn/fonts/HelveticaNeueLTW01-45Light.woff2 — 200 — 17.3 KiB — 21 ms — h2https://nebula-cdn.kampyle.com/wu/638829/onsite/embed.jsnebula-cdn.kampyle.com/wu/638829/on... https://nebula-cdn.kampyle.com/wu/638829/onsite/embed.js — 200 — 982 B — 22 ms — h2https://nebula-cdn.kampyle.com/us/wu/638829/onsite/generic1773672226315.jsnebula-cdn.kampyle.com/us/wu/638829... https://nebula-cdn.kampyle.com/us/wu/638829/onsite/generic1773672226315.js — 200 — 98.3 KiB — 9 ms — h2https://nebula-cdn.kampyle.com/us/wu/638829/forms/46937/formDataV2_1771005500836_en.jsonnebula-cdn.kampyle.com/us/wu/638829... https://nebula-cdn.kampyle.com/us/wu/638829/forms/46937/formDataV2_1771005500836_en.json — 200 — 2.5 KiB — 3 ms — h2https://www.thermofisher.com/content/dam/LifeTech/global/shared/images/feedback/givefeedback-en.jpgwww.thermofisher.com/content/dam/Li... https://www.thermofisher.com/content/dam/LifeTech/global/shared/images/feedback/givefeedback-en.jpg — 200 — 874 B — 17 ms — h2https://analytics-fe.digital-cloud-us-main.medallia.com/api/web/eventsanalytics-fe.digital-cloud-us-main.... https://analytics-fe.digital-cloud-us-main.medallia.com/api/web/events — 200 — 0 B — 260 ms — h2https://cdn.userway.org/widgetapp/2022-01-10/remediation/remediation_1641814805298.jscdn.userway.org/widgetapp/2022-01-1... https://cdn.userway.org/widgetapp/2022-01-10/remediation/remediation_1641814805298.js — 200 — 39.3 KiB — 7 ms — h2https://cdn.userway.org/widgetapp/images/body_wh.svgcdn.userway.org/widgetapp/images/bo... https://cdn.userway.org/widgetapp/images/body_wh.svg — 200 — 2.7 KiB — 6 ms — h2https://cdn.userway.org/widgetapp/images/spin_wh.svgcdn.userway.org/widgetapp/images/sp... https://cdn.userway.org/widgetapp/images/spin_wh.svg — 200 — 1.2 KiB — 6 ms — h2https://analytics-fe.digital-cloud-us-main.medallia.com/api/web/eventsanalytics-fe.digital-cloud-us-main.... https://analytics-fe.digital-cloud-us-main.medallia.com/api/web/events — 200 — 39 B — 65 ms — h2https://www.thermofisher.com/2BV563CzQeVx21jTBA/hwiELf9Yb1w1/fARXBBIUJAo/SxI/-W1pkOVUPAgwww.thermofisher.com/2BV563CzQeVx21... https://www.thermofisher.com/2BV563CzQeVx21jTBA/hwiELf9Yb1w1/fARXBBIUJAo/SxI/-W1pkOVUPAg — 200 — 994 B — 28 ms — h2https://api.userway.org/api/a11y-data/v0/page/https%3A%2F%2Fwww.thermofisher.com%2Fus%2Fen%2Fhome.html/DESKTOP/WIDGET_ON/statusapi.userway.org/api/a11y-data/v0/pa... https://api.userway.org/api/a11y-data/v0/page/https%3A%2F%2Fwww.thermofisher.com%2Fus%2Fen%2Fhome.html/DESKTOP/WIDGET_ON/status — 200 — 454 B — 65 ms — h2
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 1660ms · 312KB · $10/mo
www.thermofisher.com
Other
Costly
Execution 529ms
Transfer 72 KB
Monthly Cost $3/mo
Unattributable
Other
Costly
Execution 392ms
Transfer 0 KB
Monthly Cost $2/mo
www.thermofisher.com
Other
Costly
Execution 388ms
Transfer 149 KB
Unused 20%
Monthly Cost $2/mo
assets.adobedtm.com
Other
Optional
Execution 193ms
Transfer 73 KB
Unused 29%
Monthly Cost $1/mo
www.thermofisher.com
Other
Optional
Execution 102ms
Transfer 6 KB
Monthly Cost $1/mo
www.thermofisher.com
Other
Optional
Execution 56ms
Transfer 12 KB
Monthly Cost $0/mo

These scripts may cost more than they're worth

  • www.thermofisher.com adds 529ms and costs ~$3/month
  • Unattributable adds 392ms and costs ~$2/month
  • www.thermofisher.com adds 388ms 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

www.thermofisher.com takes 529ms 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 392ms 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.thermofisher.com takes 388ms 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

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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