imo.im speed test — 20 Oct 2026

Measured from the wfix.shop server on 20 October 2026 at 14:50 UTC. Grade B (84/100), with the screenshots, the timings and the fixes that matter.

https://imo.im/

20 October 2026 at 14:50 UTC · Free test · report pt_8c112f6514dc
Grade
B
84/100
Performance91/100
Structure73/100

11 audit(s) passed, 5 need work

First byte (TTFB)248 msmeasured from this server
Fully loaded1.47 sfirst byte + slowest asset
Requests16document + assets
Page weight1.78 MBcompressed transfer
HTML document10.1 KBno compression
ProtocolHTTP/3nginx
Third-party178.6 KBother hosts

Where the first byte went

  • DNS lookup 48 ms 19%
  • TCP connect 38 ms 15%
  • Server wait 162 ms 65%

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 85% of 4,999 pages tested here248 ms against a median of 449 ms
Page weightheavier than 78% of 4,999 pages tested here1.78 MB against a median of 650.3 KB
Fully loadedfaster than 72% of 4,999 pages tested here1.47 s against a median of 1.84 s
Requestssends fewer requests than 83% of 4,999 pages tested here16 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 248 ms. That is workable, and the cheapest win left is caching or a warmer connection.
  • The page transfers 1.78 MB over 16 request(s). Javascript files are 55% of it, so defer what is not needed for the first screen, and drop tags nobody uses.
  • It runs over HTTP/3, so the assets share a connection instead of opening one each.
  • The largest element painted at 2.12 s, inside the 2.5 s Google calls good.
  • Layout stayed still (CLS 0.037), so nothing jumps under the reader's cursor.
  • The main thread was blocked for 30 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 imo.im
Mobile 390 × 844 · 149.8 KB · page is 2290 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 paint2.12 sgood is under 2.5 s
Cumulative layout shift0.037under 0.1 is stable
Total blocking time30 mslong tasks during load
First contentful paint2.12 sfirst content on screen
Browser page weight2.43 MB115 request(s), scripts included
Largest contentful paint2.12 s
Goodgood under 2.5 s, poor over 4 s
Cumulative layout shift0.037
Goodgood under 0.1, poor over 0.25
Total blocking time30 ms
Goodgood under 200 ms, poor over 600 ms

Page weight by type

What the page is made of

Javascript 7 requests
1,005.6 KB 55%
Images 4 requests
751.3 KB 41%
Css 3 requests
56.4 KB 3%

Transfer size, compressed as sent. 16 request(s) in total, 1.78 MB across all of them.

Top issues

Compress text responses

high impact

0 text response(s) of 10 KB or more are sent uncompressed, and the document itself is compressed. That is 0 B 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.

Image delivery and format

high impact

2 image(s) over 200 KB and 3 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

4 render-blocking resource(s) in the document head (1 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 1.78 MB across 16 request(s), with the document itself at 10.1 KB.

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

JavaScript weight

medium impact

1 JavaScript file(s) over 200 KB: chunk-vendors.4fc6ebdd.js (525.4 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

OTHERmc.yandex.ru/watch/97349169
1.22 s
CSSimo.im/cdn-assets-s/imo-official/css/chunk-ve…
1.07 s
IMAGESimo.im/cdn-assets-s/imo-official/img/bg-video…
1.07 s
JAVASCRIPTimo.im/cdn-assets-s/imo-official/js/views/pc/…
1.07 s
JAVASCRIPTimo.im/comm/libs/common-vendor/1.1.0/common_v…
1.06 s
JAVASCRIPTimo.im/comm/libs/assets-load-monitor/2.5.6/as…
1.06 s
CSSimo.im/cdn-assets-s/imo-official/css/views/pc…
1.05 s
CSSimo.im/cdn-assets-s/imo-official/css/chunk-co…
1.03 s
IMAGESimo.im/cdn-assets-s/imo-official/img/bg-home-…
1.03 s
IMAGESimo.im/cdn-assets-s/imo-official/favicon.ico
1.02 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://mc.yandex.ru/watch/97349169 3rd partyother3021.22 s0 B
https://imo.im/cdn-assets-s/imo-official/css/chunk-vendors.15d78b96.csscss2001.07 s871 B
https://imo.im/cdn-assets-s/imo-official/img/bg-video-call.6259fb3f.pngimages2001.07 s112.8 KB
https://imo.im/cdn-assets-s/imo-official/js/views/pc/index.76bacacd.jsjavascript2001.07 s22.5 KB
https://imo.im/comm/libs/common-vendor/1.1.0/common_vendor.min.jsjavascript2001.06 s88.3 KB
https://imo.im/comm/libs/assets-load-monitor/2.5.6/assets-load-monitor-init.min.jsjavascript2001.06 s26.7 KB
https://imo.im/cdn-assets-s/imo-official/css/views/pc/index.224c8e61.csscss2001.05 s21.2 KB
https://imo.im/cdn-assets-s/imo-official/css/chunk-common.4453297b.csscss2001.03 s34.3 KB
https://imo.im/cdn-assets-s/imo-official/img/bg-home-first-image.842b02fa.pngimages2001.03 s305.8 KB
https://imo.im/cdn-assets-s/imo-official/favicon.icoimages2001.02 s1.3 KB
https://imo.im/cdn-assets-s/imo-official/js/chunk-vendors.4fc6ebdd.jsjavascript2001.02 s525.4 KB
https://imo.im/cdn-assets-s/imo-official/img/bg-top.cd690b6a.pngimages2001.02 s331.4 KB
https://imo.im/cdn-assets-s/imo-official/js/chunk-common.0789f7b6.jsjavascript2001.01 s162.3 KB
https://imo.im/cdn-assets-s/imo-official/libs/flexible-pc-v2.jsjavascript2001.01 s1.9 KB
https://www.googletagmanager.com/gtag/js?id=G-39ZHERL7WV 3rd partyjavascript200619 ms178.6 KB
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