www.kwai.com speed test — 20 Oct 2026

Measured from the wfix.shop server on 20 October 2026 at 12:36 UTC. Grade B (86/100), with the screenshots, the timings and the fixes that matter.

https://www.kwai.com/

20 October 2026 at 12:36 UTC · Free test · report pt_13ab72a866e2

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Grade

86/100

Performance92/100

Structure76/100

9 audit(s) passed, 7 need work

First byte (TTFB)462 msmeasured from this server

Fully loaded1.44 sfirst byte + slowest asset

Requests17document + assets

Page weight1.05 MBcompressed transfer

HTML document15.1 KBgzip

ProtocolHTTP/3server not sent

Third-party1.04 MBother hosts

Where the first byte went

DNS lookup 64 ms 14%
TCP connect 1 ms 0%
Server wait 397 ms 86%

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 52% of 4,999 pages tested here462 ms against a median of 448 ms

Page weightheavier than 64% of 4,999 pages tested here1.05 MB against a median of 650.3 KB

Fully loadedfaster than 74% of 4,999 pages tested here1.44 s against a median of 1.84 s

Requestssends fewer requests than 82% of 4,999 pages tested here17 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 462 ms. That is workable, and the cheapest win left is caching or a warmer connection.
The page transfers 1.05 MB over 17 request(s). 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 gzip-compressed.
It runs over HTTP/3, so the assets share a connection instead of opening one each.
99% 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 1.36 s, inside the 2.5 s Google calls good.
Layout stayed still (CLS 0.025), so nothing jumps under the reader's cursor.
The main thread was blocked for 310 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.kwai.com — **Mobile** 390 × 844 · 179.6 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 paint1.36 sgood is under 2.5 s

Cumulative layout shift0.025under 0.1 is stable

Total blocking time310 mslong tasks during load

First contentful paint560 msfirst content on screen

Browser page weight1.17 MB54 request(s), scripts included

Largest contentful paint1.36 s

Goodgood under 2.5 s, poor over 4 s

Cumulative layout shift0.025

Goodgood under 0.1, poor over 0.25

Total blocking time310 ms

Needs improvementgood under 200 ms, poor over 600 ms

Page weight by type

What the page is made of

Javascript 10 requests

1,005.7 KB 93%

Images 5 requests

56.5 KB 5%

Other 1 request

616 B 0%

Transfer size, compressed as sent. 17 request(s) in total, 1.05 MB across all of them.

Top issues

Server response time (TTFB)

high impact

The first byte arrived after 462 ms. Of that, 397 ms was the server thinking and 65 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.

Total page weight

medium impact

The page transfers 1.05 MB across 17 request(s), with the document itself at 15.1 KB.

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

Cache static assets

medium impact

1 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

1 third-party host(s) serve 1.04 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.

JavaScript weight

medium impact

1 JavaScript file(s) over 200 KB: app.6a318e1fdf69e23664c5.js (267.6 KB)

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

Waterfall

Slowest requests

OTHERwww.kwai.com/manifest-pc.json

982 ms

IMAGEScdn-static.kwai.net/kos/s101/nlav11312/live/www/v2/email-a…

674 ms

IMAGEScdn-static.kwai.net/kos/s101/nlav11312/icon/kwai/2/favicon…

667 ms