www.tv-asahi.co.jp speed test — 20 Oct 2026
Measured from the wfix.shop server on 20 October 2026 at 14:22 UTC. Grade B (84/100), with the screenshots, the timings and the fixes that matter.
Where the first byte went
- DNS lookup 88 ms 14%
- TCP connect 21 ms 3%
- Server wait 503 ms 82%
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 took 612 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 278.8 KB over 12 request(s), which is lean. Javascript files are 81% 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/3, so the assets share a connection instead of opening one each.
- The largest element took 2.58 s to paint, past the 2.5 s threshold: usually a hero image that is too big or a render-blocking script in front of it.
- Layout stayed still (CLS 0.005), so nothing jumps under the reader's cursor.
- The main thread was blocked for 279 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.
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. 12 request(s) in total, 278.8 KB across all of them.
Top issues
Server response time (TTFB)
high impactThe first byte arrived after 612 ms. Of that, 503 ms was the server thinking and 109 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 impact2 text response(s) of 10 KB or more are sent uncompressed, and the document itself is not compressed. That is 247.3 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 impact10 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.
JavaScript weight
medium impact1 JavaScript file(s) over 200 KB: index.js (205.3 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 impact1 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
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://www.tv-asahi.co.jp/Top24/assets/index.js | javascript | 200 | 1.22 s | 205.3 KB |
| https://www.tv-asahi.co.jp/mps/bigdata/luid/get_luid.js | javascript | 200 | 960 ms | 2.3 KB |
| https://www.tv-asahi.co.jp/mps/bigdata/luid/ssl_tools.js | javascript | 200 | 954 ms | 6.0 KB |
| https://www.tv-asahi.co.jp/mps/bigdata/luid/opt_init.js | javascript | 200 | 938 ms | 1.2 KB |
| https://www.tv-asahi.co.jp/mps/bigdata/luid/ssl_tools_f.js | javascript | 200 | 924 ms | 4.1 KB |
| https://www.tv-asahi.co.jp/Top24/assets/index.css | css | 200 | 918 ms | 42.0 KB |
| https://www.tv-asahi.co.jp/mps/bigdata/luid/optout_migration.js | javascript | 200 | 907 ms | 288 B |
| https://www.tv-asahi.co.jp/mps/bigdata/luid/tvasahi-tools.js | javascript | 200 | 900 ms | 3.5 KB |
| https://www.tv-asahi.co.jp/mps/bigdata/luid/optout.js | javascript | 200 | 880 ms | 2.6 KB |
| https://www.tv-asahi.co.jp/Top24/assets/resources.json | other | 200 | 871 ms | 7.5 KB |
| https://www.googletagmanager.com/ns.html?id=GTM-P3HJF2 3rd party | html | 200 | 542 ms | 92 B |
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