www.larksuite.com/en_sg?from_site=feishu speed test — 20 Oct 2026
Measured from the wfix.shop server on 20 October 2026 at 13:13 UTC. Grade D (64/100), with the screenshots, the timings and the fixes that matter.
Where the first byte went
- DNS lookup 67 ms 13%
- TCP connect 46 ms 9%
- Server wait 411 ms 78%
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 525 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 16.43 MB over 26 request(s). Images files are 65% of it, so resize and recompress the largest images before anything else.
- The HTML itself arrives gzip-compressed.
- It runs over HTTP/3, so the assets share a connection instead of opening one each.
- 100% of the weight comes from other hosts (analytics, fonts, embeds), which also means their slow day becomes your slow day.
- The largest element took 3.53 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 0.003), so nothing jumps under the reader's cursor.
- The main thread was blocked for 1.94 s, 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.
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. 26 request(s) in total, 16.43 MB across all of them.
Top issues
Server response time (TTFB)
high impactThe first byte arrived after 525 ms. Of that, 411 ms was the server thinking and 113 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.
Image delivery and format
high impact6 image(s) over 200 KB and 6 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.
Total page weight
high impactThe page transfers 16.43 MB across 26 request(s), with the document itself at 40.2 KB.
Fix: Work through the heaviest assets first: images, then fonts, then third-party scripts.
Third-party weight
medium impact5 third-party host(s) serve 16.39 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 impact1 JavaScript file(s) over 200 KB: comp.b3737cf4a71ab559832c307dd.js (4.03 MB)
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
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://p16-hera-overseas.larksuitecdn.com/tos-mya-i-lojyj5t9n9/637e6b1d08ae420c8cedbcd1d955e181.png~tplv-lojyj5t9n9-png:0:0.png 3rd party | other | 405 | 1.87 s | 35 B |
| https://p16-hera-sg.larksuitecdn.com/tos-alisg-i-hn4qzgxq2n-sg/ad92e6ba71ca448fbcf04cf7367bd85e.png~tplv-hn4qzgxq2n-png:0:0.png 3rd party | images | 200 | 1.08 s | 320.1 KB |
| https://p16-hera-overseas.larksuitecdn.com/tos-mya-i-lojyj5t9n9/9b87226605154fb7b8141a9c94de22e9.png~tplv-lojyj5t9n9-origin.image 3rd party | images | 200 | 1.05 s | 12.7 KB |
| https://sf16-sg.larksuitecdn.com/obj/suite-public-file-sg/hera_tmp/hera/comp.b3737cf4a71ab559832c307dd.css 3rd party | css | 200 | 1.02 s | 795.3 KB |
| https://p16-hera-overseas.larksuitecdn.com/tos-mya-i-lojyj5t9n9/57461c05fed847a6b51e3e028ff96060.png~tplv-lojyj5t9n9-png:0:0.png 3rd party | images | 200 | 1.02 s | 40.1 KB |
| https://accounts.google.com/gsi/client 3rd party | html | 403 | 1.01 s | 0 B |
| https://p16-hera-overseas.larksuitecdn.com/tos-mya-i-lojyj5t9n9/c801a0760aef41dc9835bb36a61400eb.png~tplv-lojyj5t9n9-origin.image 3rd party | images | 200 | 1.00 s | 3.2 KB |
| https://p16-hera-overseas.larksuitecdn.com/tos-mya-i-lojyj5t9n9/52a7e140624044cb8241ef528d0e672c.png~tplv-lojyj5t9n9-png:0:0.png 3rd party | images | 200 | 999 ms | 206.7 KB |
| https://p16-hera-overseas.larksuitecdn.com/tos-mya-i-lojyj5t9n9/fdbee641232f4b5d805403ab062dfe69.png~tplv-lojyj5t9n9-png:0:0.png 3rd party | images | 200 | 997 ms | 890.0 KB |
| https://p16-hera-overseas.larksuitecdn.com/tos-mya-i-lojyj5t9n9/6b35a4fea03849038a0dacc98a1a6e67.png~tplv-lojyj5t9n9-png:0:0.png 3rd party | images | 200 | 995 ms | 199.2 KB |
| https://sf16-sg.larksuitecdn.com/obj/suite-public-file-sg/hera_tmp/hera/comp.b3737cf4a71ab559832c307dd.js 3rd party | javascript | 200 | 991 ms | 4.03 MB |
| https://sf16-sg.larksuitecdn.com/obj/suite-public-file-sg/open_file/resources/hera-static/js/index.bc6258fd00005cb8feec1870507bc9dfceffd03e05282a30a62a7949fdd600ab.js 3rd party | javascript | 200 | 991 ms | 94.4 KB |
| https://sf16-sg.larksuitecdn.com/obj/suite-public-file-sg/vendor/vendor.6b3fe94d8606.js 3rd party | javascript | 200 | 991 ms | 67.4 KB |
| https://p16-hera-overseas.larksuitecdn.com/tos-mya-i-lojyj5t9n9/0a5d0466a8e14fd0b7dd15f48f0bf7af.png~tplv-lojyj5t9n9-png:0:0.png 3rd party | images | 200 | 990 ms | 220 B |
| https://p16-hera-overseas.larksuitecdn.com/tos-mya-i-lojyj5t9n9/a549473285f9476a9fc3f73ba1ad5df4.png~tplv-lojyj5t9n9-png:0:0.png 3rd party | images | 200 | 985 ms | 6.11 MB |
| https://sf16-sg.larksuitecdn.com/obj/suite-public-file-sg/vendor/polyfill.min.js 3rd party | javascript | 200 | 984 ms | 33.9 KB |
| https://p16-hera-overseas.larksuitecdn.com/tos-mya-i-lojyj5t9n9/5a1506f95cf249329b6fff83bd012018.png~tplv-lojyj5t9n9-png:0:0.png 3rd party | images | 200 | 981 ms | 2.86 MB |
| https://sf16-sg.larksuitecdn.com/obj/suite-public-file-sg/hera-font-family/LarkCircular-Medium.otf 3rd party | fonts | 200 | 977 ms | 105.9 KB |
| https://sf16-sg.larksuitecdn.com/obj/suite-public-file-sg/hera-font-family/LarkCircular-Regular.otf 3rd party | fonts | 200 | 977 ms | 101.8 KB |
| https://sf16-sg.larksuitecdn.com/obj/suite-public-file-sg/hera-font-family/LarkCircular-SemiBold.otf 3rd party | fonts | 200 | 975 ms | 106.2 KB |
| https://sf16-sg.larksuitecdn.com/obj/suite-public-file-sg/hera-font-family/LarkCircular-Bold.otf 3rd party | fonts | 200 | 974 ms | 106.1 KB |
| https://p16-hera-overseas.larksuitecdn.com/tos-mya-i-lojyj5t9n9/40ecc0af4a5240408028ec53927d1983.png~tplv-lojyj5t9n9-png:0:0.png 3rd party | images | 200 | 974 ms | 89.0 KB |
| https://lf-package-sg.larksuitecdn.com/obj/lark-static-sgsaas/lark/passport/tenant/tenant-widget-6.1.2-1.0.0.143.js 3rd party | javascript | 200 | 973 ms | 179.0 KB |
| https://lf-package-sg.larksuitecdn.com/obj/lark-static-sgsaas/lark/iam/passport-js-apis-2.2.1-1.0.0.78.js 3rd party | javascript | 200 | 955 ms | 20.3 KB |
| https://lf-package-sg.larksuitecdn.com/obj/lark-static-sgsaas/lark/iam/passport-js-apis-plugin-google-2.1.3.js 3rd party | javascript | 200 | 950 ms | 105.3 KB |
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