www.zendesk.com/service/messaging/live-chat-software?from=zp speed test — 20 Oct 2026

Measured from the wfix.shop server on 20 October 2026 at 14:37 UTC. Grade C (77/100), with the screenshots, the timings and the fixes that matter.

Grade
C
77/100
Performance87/100
Structure61/100

10 audit(s) passed, 6 need work

First byte (TTFB)189 msmeasured from this server
Fully loaded1.25 sfirst byte + slowest asset
Requests26document + assets
Page weight2.48 MBcompressed transfer
HTML document63.8 KBbr
ProtocolHTTP/3cloudflare
Third-party2.42 MBother hosts

Where the first byte went

  • DNS lookup 58 ms 31%
  • TCP connect 27 ms 14%
  • Server wait 105 ms 56%

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 94% of 4,999 pages tested here189 ms against a median of 449 ms
Page weightheavier than 85% of 4,999 pages tested here2.48 MB against a median of 650.3 KB
Fully loadedfaster than 85% of 4,999 pages tested here1.25 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 server answered in 189 ms, which is fast: almost all of the wait is the page itself, not the host.
  • The page transfers 2.48 MB over 26 request(s). Images files are 97% of it, so resize and recompress the largest images before anything else.
  • The HTML itself arrives br-compressed.
  • It runs over HTTP/3, so the assets share a connection instead of opening one each.
  • 97% 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 516 ms, inside the 2.5 s Google calls good.
  • Layout stayed still (CLS 0.008), so nothing jumps under the reader's cursor.
  • The main thread was blocked for 755 ms, so taps and scrolling wait while scripts run.

Fix first: Image delivery and format - 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.

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.zendesk.com
Mobile 390 × 844 · 75.3 KB · page is 6000 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 paint516 msgood is under 2.5 s
Cumulative layout shift0.008under 0.1 is stable
Total blocking time755 mslong tasks during load
First contentful paint300 msfirst content on screen
Browser page weight2.65 MB180 request(s), scripts included
Failed requests7blocked or unreachable
Largest contentful paint516 ms
Goodgood under 2.5 s, poor over 4 s
Cumulative layout shift0.008
Goodgood under 0.1, poor over 0.25
Total blocking time755 ms
Poorgood under 200 ms, poor over 600 ms

Page weight by type

What the page is made of

Images 25 requests
2.42 MB 97%

Transfer size, compressed as sent. 26 request(s) in total, 2.48 MB across all of them.

Top issues

Image delivery and format

high impact

3 image(s) over 200 KB and 12 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.

Serve everything over HTTPS

high impact

1 asset(s) are still requested over plain HTTP.

Fix: Redirect HTTP to HTTPS at the server, and rewrite the remaining http:// asset references so nothing depends on browser upgrading.

Total page weight

high impact

The page transfers 2.48 MB across 26 request(s), with the document itself at 63.8 KB.

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

Cache static assets

medium impact

11 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

3 third-party host(s) serve 2.42 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.

Waterfall

Slowest requests

IMAGESweb-assets.zendesk.com/cdn-cgi/image/width=3840,q=45,f=auto/i…
1.06 s
IMAGESweb-assets.zendesk.com/cdn-cgi/image/width=640,q=65,f=auto/im…
1.06 s
IMAGESweb-assets.zendesk.com/cdn-cgi/image/width=3840,q=45,f=auto/i…
1.06 s
IMAGESweb-assets.zendesk.com/cdn-cgi/image/width=640,q=45,f=auto/im…
1.05 s
IMAGESweb-assets.zendesk.com/cdn-cgi/image/width=640,q=45,f=auto/im…
1.05 s
IMAGESweb-assets.zendesk.com/cdn-cgi/image/width=96,q=45,f=auto/jer…
1.02 s
IMAGESweb-assets.zendesk.com/cdn-cgi/image/width=640,q=45,f=auto/im…
1.01 s
IMAGESweb-assets.zendesk.com/cdn-cgi/image/width=256,q=45,f=auto/je…
1.01 s
IMAGESweb-assets.zendesk.com/cdn-cgi/image/width=3840,q=45,f=auto/i…
999 ms
IMAGESd26a57ydsghvgx.cloudfront.net/product/Customer%20Story%20Images/Uber…
999 ms

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://web-assets.zendesk.com/cdn-cgi/image/width=3840,q=45,f=auto/images/AMER/chatsupportthumbnail.png 3rd partyimages2001.06 s24.0 KB
https://web-assets.zendesk.com/cdn-cgi/image/width=640,q=65,f=auto/images/AMER/live-chat-software-hero.png 3rd partyimages2001.06 s141.0 KB
https://web-assets.zendesk.com/cdn-cgi/image/width=3840,q=45,f=auto/images/AMER/live-chat-software-hero.png 3rd partyimages2001.06 s272.2 KB
https://web-assets.zendesk.com/cdn-cgi/image/width=640,q=45,f=auto/images/AMER/live%20chat%20support.jpg 3rd partyimages2001.05 s14.3 KB
https://web-assets.zendesk.com/cdn-cgi/image/width=640,q=45,f=auto/images/AMER/live-chat-software-hero.png 3rd partyimages2001.05 s108.1 KB
https://web-assets.zendesk.com/cdn-cgi/image/width=96,q=45,f=auto/jeremy-korman-messaging-author-zendesk.png 3rd partyimages2001.02 s1.3 KB
https://web-assets.zendesk.com/cdn-cgi/image/width=640,q=45,f=auto/images/blog-redesign/EmailSystem-1097_Final_x2.jpg 3rd partyimages2001.01 s6.0 KB
https://web-assets.zendesk.com/cdn-cgi/image/width=256,q=45,f=auto/jeremy-korman-messaging-author-zendesk.png 3rd partyimages2001.01 s4.0 KB
https://web-assets.zendesk.com/cdn-cgi/image/width=3840,q=45,f=auto/images/AMER/live%20chat%20support.jpg 3rd partyimages200999 ms15.3 KB
http://d26a57ydsghvgx.cloudfront.net/product/Customer%20Story%20Images/Uber_logo.png 3rd partyimages200999 ms5.9 KB
https://web-assets.zendesk.com/cdn-cgi/image/width=640,q=45,f=auto/images/AMER/uber%20hero1.jpg 3rd partyimages200997 ms14.0 KB
https://web-assets.zendesk.com/cdn-cgi/image/width=3840,q=45,f=auto/images/blog-redesign/EmailSystem-1097_Final_x2.jpg 3rd partyimages200979 ms37.3 KB
https://d1eipm3vz40hy0.cloudfront.net/images/AMER/live-chat-software-images-2026/live-chat-software-reamaze-optimized.png 3rd partyimages200963 ms171.3 KB
https://web-assets.zendesk.com/cdn-cgi/image/width=3840,q=45,f=auto/images/AMER/uber%20hero1.jpg 3rd partyimages200963 ms18.4 KB
https://d1eipm3vz40hy0.cloudfront.net/images/AMER/live-chat-software-images-2026/live-chat-software-proprofs-optimized.png 3rd partyimages200947 ms135.8 KB
https://web-assets.zendesk.com/images/AMER/live-chat-software-hero.png 3rd partyimages200946 ms338.0 KB
https://d1eipm3vz40hy0.cloudfront.net/images/AMER/live-chat-software-images-2026/live-chat-software-tawkto-optimized.png 3rd partyimages200940 ms125.6 KB
https://d1eipm3vz40hy0.cloudfront.net/images/AMER/live-chat-software-images-2026/live-chat-software-liveagent-optimized.png 3rd partyimages200935 ms163.6 KB
https://d1eipm3vz40hy0.cloudfront.net/images/AMER/live-chat-software-images-2026/live-chat-software-tidio-optimized.png 3rd partyimages200929 ms102.6 KB
https://d1eipm3vz40hy0.cloudfront.net/images/AMER/live-chat-software-images-2026/live-chat-software-purechat-optimized.png 3rd partyimages200925 ms166.2 KB
https://d1eipm3vz40hy0.cloudfront.net/images/AMER/live-chat-software-images-2026/live-chat-software-hubspot-optimized.png 3rd partyimages200921 ms225.2 KB
https://d1eipm3vz40hy0.cloudfront.net/images/AMER/live-chat-software-images-2026/live-chat-software-olark-optimized.png 3rd partyimages200921 ms84.7 KB
https://d1eipm3vz40hy0.cloudfront.net/images/AMER/live-chat-software-images-2026/live-chat-software-intercom-optimized.png 3rd partyimages200904 ms81.7 KB
https://d1eipm3vz40hy0.cloudfront.net/images/AMER/live-chat-software-images-2026/live-chat-software-livechat-optimized.png 3rd partyimages200903 ms59.2 KB
https://d1eipm3vz40hy0.cloudfront.net/images/AMER/live-chat-software-images-2026/live-chat-software-zendesk-product-image-optimized.png 3rd partyimages200894 ms164.7 KB
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