www.siemens.com/en-us speed test — 20 Oct 2026

Measured from the wfix.shop server on 20 October 2026 at 12:41 UTC. Grade D (65/100), with the screenshots, the timings and the fixes that matter.

https://www.siemens.com/en-us/

20 October 2026 at 12:41 UTC · Free test · report pt_5d9f66ba61fd
Grade
D
65/100
Performance64/100
Structure67/100

10 audit(s) passed, 6 need work

First byte (TTFB)791 msmeasured from this server
Fully loaded1.98 sfirst byte + slowest asset
Requests26document + assets
Page weight3.07 MBcompressed transfer
HTML document90.0 KBbr
ProtocolHTTP/3C2 Comms Cloud (291a0bb6)
Third-party2.98 MBother hosts

Where the first byte went

  • DNS lookup 76 ms 10%
  • TCP connect 21 ms 3%
  • Server wait 693 ms 88%

Measured on the connection that fetched the HTML. Every other request on the page waits for the end of this bar before it can start.

How this page compares

First byteslower than 75% of 4,999 pages tested here791 ms against a median of 448 ms
Page weightheavier than 89% of 4,999 pages tested here3.07 MB against a median of 650.3 KB
Fully loadedslower than 56% of 4,999 pages tested here1.98 s against a median of 1.84 s
Requestssends more requests than 100% of 4,999 pages tested here26 against a median of 26

Every report published here is in this comparison, so it is a reference population of pages tested from one server - not a benchmark of the whole web.

What these numbers mean

  • The first byte took 791 ms. Everything else waits for that number, so the server is where to start: caching, a slow query, or an overloaded host.
  • The page transfers 3.07 MB over 26 request(s). Images files are 97% of it, so resize and recompress the largest images before anything else.
  • The HTML itself arrives br-compressed.
  • It runs over HTTP/3, so the assets share a connection instead of opening one each.
  • 97% of the weight comes from other hosts (analytics, fonts, embeds), which also means their slow day becomes your slow day.
  • The largest element painted at 740 ms, inside the 2.5 s Google calls good.
  • Layout stayed still (CLS 0.007), so nothing jumps under the reader's cursor.
  • The main thread was blocked for 228 ms, so taps and scrolling wait while scripts run.

Fix first: Server response time (TTFB) - Cut server think time: page cache, query indexes, fewer synchronous calls to third parties inside the request. Connection setup is distance, so a nearer region or a CDN edge helps instead.

Read on one shared server, not a visitor's phone: use it to compare pages against each other, not as a promise about every connection. We fix what these tests find.

Screenshot

What the page looks like

Loaded in headless Chromium on this server. Click an image to open it full size.

Mobile screenshot of www.siemens.com
Mobile 390 × 844 · 153.3 KB · page is 6000 px tall

Browser render

The same URL loaded in a real browser, so these are the readings curl cannot produce. The grade above is still built from the server measurements.

Largest contentful paint740 msgood is under 2.5 s
Cumulative layout shift0.007under 0.1 is stable
Total blocking time228 mslong tasks during load
First contentful paint652 msfirst content on screen
Browser page weight3.77 MB114 request(s), scripts included
Failed requests1blocked or unreachable
Largest contentful paint740 ms
Goodgood under 2.5 s, poor over 4 s
Cumulative layout shift0.007
Goodgood under 0.1, poor over 0.25
Total blocking time228 ms
Needs improvementgood under 200 ms, poor over 600 ms

Page weight by type

What the page is made of

Images 25 requests
2.98 MB 97%

Transfer size, compressed as sent. 26 request(s) in total, 3.07 MB across all of them.

Top issues

Server response time (TTFB)

high impact

The first byte arrived after 791 ms. Of that, 693 ms was the server thinking and 97 ms was connection setup. A first byte under 400 ms is what a visitor feels as instant.

Fix: Cut server think time: page cache, query indexes, fewer synchronous calls to third parties inside the request. Connection setup is distance, so a nearer region or a CDN edge helps instead.

Image delivery and format

high impact

3 image(s) over 200 KB and 6 large image(s) still served as JPEG or PNG.

Fix: Serve WebP or AVIF with a JPEG fallback, size images to the space they occupy, and lazy-load anything below the fold. Images are usually more than half of a slow page.

Render-blocking resources

high impact

5 render-blocking resource(s) in the document head (2 script(s), 3 stylesheet(s)). The page cannot paint until each one arrives.

Fix: Add defer or async to scripts that do not change the first paint, inline the critical CSS, and load the rest with media="print" plus an onload swap.

Total page weight

high impact

The page transfers 3.07 MB across 26 request(s), with the document itself at 90.0 KB.

Fix: Work through the heaviest assets first: images, then fonts, then third-party scripts.

Third-party weight

medium impact

2 third-party host(s) serve 2.98 MB of this page. Each one is another DNS lookup, TLS handshake and point of failure you do not control.

Fix: Self-host the libraries you can, drop the tags you cannot justify, and preconnect the ones you keep.

Waterfall

Slowest requests

IMAGESassets.new.siemens.com/dam-asset/c0ef873b-228e-4511-a9ab-58fc…
1.19 s
IMAGESimages.sw.cdn.siemens.com/siemens-disw-assets/public/74FVeCy02Pv…
1.04 s
IMAGESimages.sw.cdn.siemens.com/siemens-disw-assets/public/6au1BBWgJxW…
1.03 s
IMAGESimages.sw.cdn.siemens.com/siemens-disw-assets/public/2oZbGAau6oS…
1.01 s
IMAGESimages.sw.cdn.siemens.com/siemens-disw-assets/public/1oJSZsMf5Uq…
1.00 s
IMAGESimages.sw.cdn.siemens.com/siemens-disw-assets/public/1oJSZsMf5Uq…
1.00 s
IMAGESimages.sw.cdn.siemens.com/siemens-disw-assets/public/2lN6tWAWKe4…
998 ms
IMAGESimages.sw.cdn.siemens.com/siemens-disw-assets/public/2Zmv775Em9u…
996 ms
IMAGESimages.sw.cdn.siemens.com/siemens-disw-assets/public/2oZbGAau6oS…
993 ms
IMAGESimages.sw.cdn.siemens.com/siemens-disw-assets/public/74FVeCy02Pv…
988 ms

Each bar is one request's own response time, scaled to the slowest. Assets were fetched in parallel, so the bars overlap in real time rather than stacking. first party third party

RequestTypeStatusTimeSize
https://assets.new.siemens.com/dam-asset/c0ef873b-228e-4511-a9ab-58fc4eda250c/EigenEngineeringAgentCapabilityBoostengineeringefficiency.png?auto=format%2Ccompress&w=96&h=64&fit=crop&crop=faces%2Cedges&q=60 3rd partyimages2001.19 s2.7 KB
https://images.sw.cdn.siemens.com/siemens-disw-assets/public/74FVeCy02PvPznNfMCx8OR/en-US/opendocument.jpg?auto=format%2Ccompress&w=320&h=1440&fit=crop&crop=faces%2Cedges&q=60 3rd partyimages2001.04 s28.0 KB
https://images.sw.cdn.siemens.com/siemens-disw-assets/public/6au1BBWgJxWXY8RwBnAsQc/en-US/electrification-x-marketplace-promo-640x480.jpg?auto=format%2Ccompress&w=320&h=480&fit=crop&crop=faces%2Cedges&q=60 3rd partyimages2001.03 s28.9 KB
https://images.sw.cdn.siemens.com/siemens-disw-assets/public/2oZbGAau6oSDa92u1Iy8ZR/en-US/Amazonia3_original.jpeg?auto=format%2Ccompress&w=2560&h=1440&fit=crop&crop=faces%2Cedges&q=60 3rd partyimages2001.01 s928.4 KB
https://images.sw.cdn.siemens.com/siemens-disw-assets/public/1oJSZsMf5UqWmDFaZ2xcCr/en-US/bx-overview-panoramic-city-skyline-is485896260-xcelerator-shape-hero-2560x1440.jpg?auto=format%2Ccompress&w=2560&h=1440&fit=crop&crop=faces%2Cedges&q=60 3rd partyimages2001.00 s799.0 KB
https://images.sw.cdn.siemens.com/siemens-disw-assets/public/1oJSZsMf5UqWmDFaZ2xcCr/en-US/bx-overview-panoramic-city-skyline-is485896260-xcelerator-shape-hero-2560x1440.jpg?auto=format%2Ccompress&w=320&h=1440&fit=crop&crop=faces%2Cedges&q=60 3rd partyimages2001.00 s112.8 KB
https://images.sw.cdn.siemens.com/siemens-disw-assets/public/2lN6tWAWKe4p63fkN5MvRU/en-US/EigenEngineeringAgentKeyVisualNew640x480.png?auto=format%2Ccompress&w=2560&h=1440&fit=crop&crop=faces%2Cedges&q=60 3rd partyimages200998 ms240.1 KB
https://images.sw.cdn.siemens.com/siemens-disw-assets/public/2Zmv775Em9uLH1HD8BSM8E/en-US/297.jpg?auto=format%2Ccompress&w=640&h=360&fit=crop&crop=faces%2Cedges&q=60 3rd partyimages200996 ms41.1 KB
https://images.sw.cdn.siemens.com/siemens-disw-assets/public/2oZbGAau6oSDa92u1Iy8ZR/en-US/Amazonia3_original.jpeg?auto=format%2Ccompress&w=320&h=1440&fit=crop&crop=faces%2Cedges&q=60 3rd partyimages200993 ms105.5 KB
https://images.sw.cdn.siemens.com/siemens-disw-assets/public/74FVeCy02PvPznNfMCx8OR/en-US/opendocument.jpg?auto=format%2Ccompress&w=2560&h=1440&fit=crop&crop=faces%2Cedges&q=60 3rd partyimages200988 ms167.0 KB
https://images.sw.cdn.siemens.com/siemens-disw-assets/public/5rKmsRksp5kOaND1yCI7bs/en-US/aerofem-86200-promo-640x480.jpg?auto=format%2Ccompress&w=320&h=480&fit=crop&crop=faces%2Cedges&q=60 3rd partyimages200987 ms35.3 KB
https://images.sw.cdn.siemens.com/siemens-disw-assets/public/5rKmsRksp5kOaND1yCI7bs/en-US/aerofem-86200-promo-640x480.jpg?auto=format%2Ccompress&w=640&h=480&fit=crop&crop=faces%2Cedges&q=60 3rd partyimages200986 ms54.8 KB
https://images.sw.cdn.siemens.com/siemens-disw-assets/public/5fHvhxC9LFs6EOb5iyPj91/en-US/gridscale-x-marketplace-promo-640x480.jpg?auto=format%2Ccompress&w=640&h=480&fit=crop&crop=faces%2Cedges&q=60 3rd partyimages200981 ms75.4 KB
https://images.sw.cdn.siemens.com/siemens-disw-assets/public/5fHvhxC9LFs6EOb5iyPj91/en-US/gridscale-x-marketplace-promo-640x480.jpg?auto=format%2Ccompress&w=320&h=480&fit=crop&crop=faces%2Cedges&q=60 3rd partyimages200981 ms45.5 KB
https://images.sw.cdn.siemens.com/siemens-disw-assets/public/2WnYDSkq1vOfGaQsfogiDc/en-US/ai-business-offerings-mhero-1280x720.jpg?auto=format%2Ccompress&w=640&h=360&fit=crop&crop=faces%2Cedges&q=60 3rd partyimages200981 ms38.5 KB
https://images.sw.cdn.siemens.com/siemens-disw-assets/public/6L9Gf2S0ySbNai9Rbl91vB/en-US/bx-overview-panoramic-city-skyline-is485896260-promo-640x480.jpg?auto=format%2Ccompress&w=640&h=480&fit=crop&crop=faces%2Cedges&q=60 3rd partyimages200980 ms81.1 KB
https://images.sw.cdn.siemens.com/siemens-disw-assets/public/6au1BBWgJxWXY8RwBnAsQc/en-US/electrification-x-marketplace-promo-640x480.jpg?auto=format%2Ccompress&w=640&h=480&fit=crop&crop=faces%2Cedges&q=60 3rd partyimages200975 ms35.8 KB
https://images.sw.cdn.siemens.com/siemens-disw-assets/public/2lN6tWAWKe4p63fkN5MvRU/en-US/EigenEngineeringAgentKeyVisualNew640x480.png?auto=format%2Ccompress&w=320&h=1440&fit=crop&crop=faces%2Cedges&q=60 3rd partyimages200972 ms46.4 KB
https://images.sw.cdn.siemens.com/siemens-disw-assets/public/6L9Gf2S0ySbNai9Rbl91vB/en-US/bx-overview-panoramic-city-skyline-is485896260-promo-640x480.jpg?auto=format%2Ccompress&w=320&h=480&fit=crop&crop=faces%2Cedges&q=60 3rd partyimages200971 ms45.1 KB
https://images.sw.cdn.siemens.com/siemens-disw-assets/public/yM9LzkqCvZqtYLk16nbuP/en-US/empower-feature-640x360.jpg?auto=format%2Ccompress&w=640&h=360&fit=crop&crop=faces%2Cedges&q=60 3rd partyimages200971 ms43.1 KB
https://images.sw.cdn.siemens.com/siemens-disw-assets/public/yM9LzkqCvZqtYLk16nbuP/en-US/empower-feature-640x360.jpg?auto=format%2Ccompress&w=320&h=360&fit=crop&crop=faces%2Cedges&q=60 3rd partyimages200971 ms27.1 KB
https://images.sw.cdn.siemens.com/siemens-disw-assets/public/2Zmv775Em9uLH1HD8BSM8E/en-US/297.jpg?auto=format%2Ccompress&w=320&h=360&fit=crop&crop=faces%2Cedges&q=60 3rd partyimages200971 ms24.8 KB
https://images.sw.cdn.siemens.com/siemens-disw-assets/public/2WnYDSkq1vOfGaQsfogiDc/en-US/ai-business-offerings-mhero-1280x720.jpg?auto=format%2Ccompress&w=320&h=360&fit=crop&crop=faces%2Cedges&q=60 3rd partyimages200971 ms22.5 KB
https://images.sw.cdn.siemens.com/siemens-disw-assets/public/3L70mqUfIYlV3fUncOKem7/en-US/water-efficiency-solutions-illustration-vr-headset-mhero-1280x720.jpg?auto=format%2Ccompress&w=640&h=360&fit=crop&crop=faces%2Cedges&q=60 3rd partyimages200971 ms15.7 KB
https://images.sw.cdn.siemens.com/siemens-disw-assets/public/3L70mqUfIYlV3fUncOKem7/en-US/water-efficiency-solutions-illustration-vr-headset-mhero-1280x720.jpg?auto=format%2Ccompress&w=320&h=360&fit=crop&crop=faces%2Cedges&q=60 3rd partyimages200971 ms10.8 KB
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