sway.cloud.microsoft speed test — 20 Oct 2026

Measured from the wfix.shop server on 20 October 2026 at 14:02 UTC. Grade B (89/100), with the screenshots, the timings and the fixes that matter.

https://sway.cloud.microsoft/

20 October 2026 at 14:02 UTC · Free test · report pt_0125a6ca4391
Grade
B
89/100
Performance97/100
Structure76/100

10 audit(s) passed, 6 need work

First byte (TTFB)279 msmeasured from this server
Fully loaded1.71 sfirst byte + slowest asset
Requests26document + assets
Page weight707.4 KBcompressed transfer
HTML document21.7 KBgzip
ProtocolHTTP/2server not sent
Third-party644.9 KBother hosts

Where the first byte went

  • DNS lookup 70 ms 25%
  • TCP connect 18 ms 6%
  • Server wait 191 ms 68%

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 bytefaster than 79% of 4,999 pages tested here279 ms against a median of 449 ms
Page weightheavier than 53% of 4,999 pages tested here707.4 KB against a median of 650.3 KB
Fully loadedfaster than 57% of 4,999 pages tested here1.71 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 arrived in 279 ms. That is workable, and the cheapest win left is caching or a warmer connection.
  • The page transfers 707.4 KB over 26 request(s). Javascript files are 85% of it, so defer what is not needed for the first screen, and drop tags nobody uses.
  • The HTML itself arrives gzip-compressed.
  • It runs over HTTP/2, so the assets share a connection instead of opening one each.
  • 91% 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 1.34 s, inside the 2.5 s Google calls good.
  • Layout shift is 0.115 (good is under 0.1): something without a reserved size is loading late - an image, an ad, or a font swap.
  • The main thread was blocked for 59 ms in total, which is not enough to feel.

Fix first: Compress text responses - Turn on brotli (preferred) or gzip for text/css, javascript and text/html in the web server. This is the cheapest win available on almost any site.

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 sway.cloud.microsoft
Mobile 390 × 844 · 142.3 KB · page is 844 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 paint1.34 sgood is under 2.5 s
Cumulative layout shift0.115under 0.1 is stable
Total blocking time59 mslong tasks during load
First contentful paint876 msfirst content on screen
Browser page weight2.46 MB52 request(s), scripts included
Failed requests11blocked or unreachable
Largest contentful paint1.34 s
Goodgood under 2.5 s, poor over 4 s
Cumulative layout shift0.115
Needs improvementgood under 0.1, poor over 0.25
Total blocking time59 ms
Goodgood under 200 ms, poor over 600 ms

Page weight by type

What the page is made of

Javascript 14 requests
604.5 KB 85%
Html 1 request
40.8 KB 6%
Images 9 requests
28.6 KB 4%
Css 1 request
11.8 KB 2%

Transfer size, compressed as sent. 26 request(s) in total, 707.4 KB across all of them.

Top issues

Compress text responses

high impact

1 text response(s) of 10 KB or more are sent uncompressed, and the document itself is not compressed. That is 51.5 KB of compressible text.

Fix: Turn on brotli (preferred) or gzip for text/css, javascript and text/html in the web server. This is the cheapest win available on almost any site.

Cache static assets

medium impact

9 asset(s) answer without a Cache-Control max-age, so browsers revalidate them on every visit.

Fix: Version filenames on change and serve them with a long max-age plus immutable. That is what makes a returning visitor fast.

Third-party weight

medium impact

4 third-party host(s) serve 644.9 KB 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.

JavaScript weight

medium impact

1 JavaScript file(s) over 200 KB: Common.js (200.2 KB)

Fix: Split routes, remove unused dependencies, and prefer a two-file build (one pinned library, one application bundle) over many small ones.

Avoid extra redirects

medium impact

1 redirect hop(s) before the page load started, each one a full round trip before the first byte.

Fix: Link to the canonical URL (and make sure http, the apex domain and www all point at it) so no visitor pays a redirect first.

Waterfall

Slowest requests

JAVASCRIPTjs.monitor.azure.com/scripts/c/ms.jsll-4.min.js
1.43 s
JAVASCRIPTwcpstatic.microsoft.com/mscc/lib/v2/wcp-consent.js
1.28 s
IMAGESwus-cdn.sway.static.microsoft/162061340105_Content/favicon-72x72.png
1.15 s
HTMLsway.cloud.microsoft/webappmanifest.json
1.14 s
JAVASCRIPTwus-cdn.sway.static.microsoft/Content/jquery-4.0.0-custom-1.js
1.09 s
IMAGESwus-cdn.sway.static.microsoft/162061340105_Content/favicon-144x144.png
1.08 s
JAVASCRIPTwus-cdn.sway.static.microsoft/Content/jquery-ui-1.14.0-custom.js
1.08 s
JAVASCRIPTwus-cdn.sway.static.microsoft/Content/dompurify-3.4.13.js
1.07 s
JAVASCRIPTwus-cdn.sway.static.microsoft/162061340105_Content/trusted-types-pol…
1.06 s
IMAGESuhf.microsoft.com/images/microsoft/RE1Mu3b.png
1.05 s

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://js.monitor.azure.com/scripts/c/ms.jsll-4.min.js 3rd partyjavascript2001.43 s74.4 KB
https://wcpstatic.microsoft.com/mscc/lib/v2/wcp-consent.js 3rd partyjavascript2001.28 s51.5 KB
https://wus-cdn.sway.static.microsoft/162061340105_Content/favicon-72x72.png 3rd partyimages2001.15 s2.0 KB
https://sway.cloud.microsoft/webappmanifest.jsonhtml4051.14 s40.8 KB
https://wus-cdn.sway.static.microsoft/Content/jquery-4.0.0-custom-1.js 3rd partyjavascript2001.09 s27.0 KB
https://wus-cdn.sway.static.microsoft/162061340105_Content/favicon-144x144.png 3rd partyimages2001.08 s4.0 KB
https://wus-cdn.sway.static.microsoft/Content/jquery-ui-1.14.0-custom.js 3rd partyjavascript2001.08 s65.4 KB
https://wus-cdn.sway.static.microsoft/Content/dompurify-3.4.13.js 3rd partyjavascript2001.07 s10.5 KB
https://wus-cdn.sway.static.microsoft/162061340105_Content/trusted-types-policies.js 3rd partyjavascript2001.06 s1.6 KB
https://uhf.microsoft.com/images/microsoft/RE1Mu3b.png 3rd partyimages2001.05 s4.0 KB
https://wus-cdn.sway.static.microsoft/162061340105_Content/Common.js 3rd partyjavascript2001.05 s200.2 KB
https://wus-cdn.sway.static.microsoft/162061340105_Content/Home.js 3rd partyjavascript2001.05 s79.1 KB
https://wus-cdn.sway.static.microsoft/162061340105_Content/en-us/Resources.js 3rd partyjavascript2001.05 s38.4 KB
https://wus-cdn.sway.static.microsoft/162061340105_Content/tdb.js 3rd partyjavascript2001.05 s31.6 KB
https://wus-cdn.sway.static.microsoft/Content/CommonDiagnostics-Sway-1.0.0.js 3rd partyjavascript2001.05 s13.1 KB
https://wus-cdn.sway.static.microsoft/162061340105_Content/Preload.css 3rd partycss2001.05 s11.8 KB
https://wus-cdn.sway.static.microsoft/162061340105_Content/favicon.ico 3rd partyimages2001.05 s7.7 KB
https://wus-cdn.sway.static.microsoft/162061340105_Content/favicon-192x192.png 3rd partyimages2001.05 s5.5 KB
https://wus-cdn.sway.static.microsoft/162061340105_Content/Preload.js 3rd partyjavascript2001.05 s4.2 KB
https://wus-cdn.sway.static.microsoft/Content/DefaultSignIn-1.3.1387.1646.js 3rd partyjavascript2001.05 s4.2 KB
https://wus-cdn.sway.static.microsoft/Content/modernizr-3.13.1-custom.js 3rd partyjavascript2001.05 s3.4 KB
https://wus-cdn.sway.static.microsoft/162061340105_Content/favicon-96x96.png 3rd partyimages2001.05 s2.8 KB
https://wus-cdn.sway.static.microsoft/162061340105_Content/favicon-48x48.png 3rd partyimages2001.05 s1.5 KB
https://wus-cdn.sway.static.microsoft/162061340105_Content/favicon-32x32.png 3rd partyimages2001.05 s739 B
https://wus-cdn.sway.static.microsoft/162061340105_Content/favicon-16x16.png 3rd partyimages2001.05 s449 B
Report this page

The page is removed when the owner agrees. Sending this removes nothing by itself.

Run this test on your own site

The same engine, free, with the screenshots and the fixes. No account needed.