xoso.com.vn speed test — 20 Oct 2026
Measured from the wfix.shop server on 20 October 2026 at 13:03 UTC. Grade B (87/100), with the screenshots, the timings and the fixes that matter.
Where the first byte went
- DNS lookup 66 ms 16%
- TCP connect 37 ms 9%
- Server wait 316 ms 76%
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
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 418 ms. That is workable, and the cheapest win left is caching or a warmer connection.
- The page transfers 549.0 KB over 15 request(s), which is lean. Javascript files are 93% of it, so defer what is not needed for the first screen, and drop tags nobody uses.
- The HTML itself arrives br-compressed.
- It runs over HTTP/3, so the assets share a connection instead of opening one each.
- 95% 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 448 ms, inside the 2.5 s Google calls good.
- Layout stayed still (CLS 0.039), so nothing jumps under the reader's cursor.
- The main thread was blocked for 140 ms in total, which is not enough to feel.
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.
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.
Page weight by type
What the page is made of
Transfer size, compressed as sent. 15 request(s) in total, 549.0 KB across all of them.
Top issues
Server response time (TTFB)
high impactThe first byte arrived after 418 ms. Of that, 316 ms was the server thinking and 103 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.
Compress text responses
high impact1 text response(s) of 10 KB or more are sent uncompressed, and the document itself is not compressed. That is 201.1 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.
Third-party weight
medium impact6 third-party host(s) serve 519.4 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 impact2 JavaScript file(s) over 200 KB: adsbygoogle.js (201.1 KB), 232296.js (255.1 KB)
Fix: Split routes, remove unused dependencies, and prefer a two-file build (one pinned library, one application bundle) over many small ones.
Mobile viewport
medium impactNo viewport meta tag, so a phone renders the desktop layout scaled down.
Fix: Add a viewport meta tag with width=device-width and an initial scale of 1.
Waterfall
Slowest requests
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
| Request | Type | Status | Time | Size |
|---|---|---|---|---|
| https://xoso.com.vn/favicon.ico | images | 200 | 874 ms | 4.2 KB |
| https://xoso.com.vn/images/arow.svg | images | 200 | 873 ms | 737 B |
| https://accounts.google.com/gsi/client 3rd party | html | 403 | 793 ms | 0 B |
| https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-6162392498535478 3rd party | javascript | 200 | 724 ms | 201.1 KB |
| https://cdn.xoso.com.vn/js/lottery_live_all.min.js?v=20263006 3rd party | javascript | 200 | 724 ms | 12.4 KB |
| https://xoso.com.vn/manifest.json | other | 200 | 723 ms | 819 B |
| https://cdn.premiumads.net/tag/73869/c5373803-16c0-4675-971f-6b435d191a77.js 3rd party | html | 302 | 697 ms | 0 B |
| https://www.googletagmanager.com/ns.html?id=GTM-TR3FRW 3rd party | html | 200 | 687 ms | 92 B |
| https://cdn.xoso.com.vn/js/jsall.min.js?v=20251230 3rd party | javascript | 200 | 677 ms | 43.7 KB |
| https://jsc.mgid.com/site/232296.js 3rd party | javascript | 200 | 659 ms | 255.1 KB |
| https://cdn.xoso.com.vn/images/logo.svg 3rd party | images | 200 | 659 ms | 6.4 KB |
| https://cdn.xoso.com.vn/images/top-arrow.svg 3rd party | images | 200 | 659 ms | 358 B |
| https://cdn.xoso.com.vn/images/ic_menu_24px.svg 3rd party | images | 200 | 659 ms | 172 B |
| https://cdn.xoso.com.vn/images/imghome.png 3rd party | images | 200 | 659 ms | 141 B |
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