@usingwpt

Learn basic and advanced uses of WebPageTest, the performance measurement tool for optimizing websites, written by @rick_viscomi @andydavies and @marcelduran

usingwpt.com
Joined February 2015
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"Using WebPageTest" is officially done! Hard copies are shipping today. Get yours at usingwpt.com #webperf

Using WebPageTest

Learn basic and advanced uses of WebPagetest, the performance measurement tool for optimizing websites. This practical guide shows users new to this tool how run tests and interpret... - Selection...

oreilly.com
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Using WebPageTest retweeted
Cloudinary
@cloudinary7 Apr 2022
Most developers seem to get srcset right, but too many get sizes wrong. Learn more about these trends and much more in the Media chapter of the Web Almanac, co-authored by our very own @etportis! cloudinary.buzz/xVVR50IBvGV

The 2021 Web Almanac

The Web Almanac is an annual state of the web report combining the expertise of the web community with the data and trends of the HTTP Archive.

almanac.httparchive.org
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Using WebPageTest retweeted
HTTP Archive 💾@HTTPArchive16 Nov 2020
🥳🎂 Happy 10th birthday HTTP Archive!! Ten years ago today, @Souders ran the first crawl consisting of 16,656 URLs. Since then, we've been tracking how the web is built with 213 crawls and growing to 7,594,681 URLs! Help us celebrate by sharing your HTTP Archive story 👇
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Using WebPageTest retweeted
HTTP Archive 💾@HTTPArchive10 Nov 2020
🚨 Two chapters of the 2020 Web Almanac are now available for early access: Markup and Capabilities! This is our second annual data-driven report on the state of the web, with 20+ chapters written by web community experts. 👇 See the links below and let us know what you think!
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New blog post by me: Fixing a legacy HTTP/1.1 server configuration with @Cloudflare Workers. nooshu.github.io/blog/2020/1… #webperf #perfmatters
Charts showing key page load timings across the three different configurations.

ALT Charts showing key page load timings across the three different configurations.

Visual progress chart showing that HTTP/2 is best, HTTP/1.1 with `connection: keep-alive` is next, and the original server config is slowest.

ALT Visual progress chart showing that HTTP/2 is best, HTTP/1.1 with `connection: keep-alive` is next, and the original server config is slowest.

Waterfall chart when the `connection: keep-alive` header is in the server response.

ALT Waterfall chart when the `connection: keep-alive` header is in the server response.

Waterfall chart when the `connection: close` header is in the server response.

ALT Waterfall chart when the `connection: close` header is in the server response.

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Using WebPageTest retweeted
Sergey Chernyshev@sergeyche28 Oct 2020
I am happy to announce that my new Web Performance team is looking for a Senior Software Engineer: smrtr.io/4x-Mb
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Now this is really cool! Followed @AndyDavies latest blog post on WebPageTest and @Cloudflare Workers to test the perceived performance difference the `font-display` property has on GOV.UK. No redeploy to production needed! #webfonts #webperf #perfmatters
Filmstrip view from WebPageTest showing the impact the `font-display` CSS property has on font loading.

ALT Filmstrip view from WebPageTest showing the impact the `font-display` CSS property has on font loading.

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Using WebPageTest retweeted
Catchpoint@Catchpoint30 Sep 2020
We'll be going live this Thursday at 1pm ET for a Q&A with @patmeenan and @mdaoudi on Webpagetest. Tell us what burning questions you have in the comments below.
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Speaking of WebPageTest, watching an April 2020 talk from @patmeenan from a WPT walk through w/ @mozilla's @davehunt82 for an edition of Automationeers. #webperf #perfmatters youtu.be/hgKsaIGGfMc
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Using WebPageTest retweeted
Aymen Loukil@LoukilAymen25 Sep 2020
You want to run a test with WebPageTest but the waiting is long? Check webpagetest.org/getLocations… to choose a free or less used resource (browser/location). #webperf #tip
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youtube.com/watch?v=D6VXu2CC…

Catchpoint and Webpagetest.org join forces

WebPageTest is the industries most popular and widely used open-sou...

youtube.com
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Another set of updates to my 'How to read a WebPageTest Waterfall View chart': • Examining undefined 204 status codes • Service Worker precache slowing a page load • How to view a sites HTTP/2 dependency graph nooshu.github.io/blog/2019/1… #webperf #perfmatters
Waterfall looking at the effect an early service worker registration can have on page loading.

ALT Waterfall looking at the effect an early service worker registration can have on page loading.

Waterfall investigating 204 status codes named 'undefined'.

ALT Waterfall investigating 204 status codes named 'undefined'.

Annotated version of a Chrome HTTP/2 dependency graph.

ALT Annotated version of a Chrome HTTP/2 dependency graph.

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Using WebPageTest retweeted
Using WebPageTest@usingwpt16 Sep 2020
How do you feel about Catchpoint's acquisition of WebPageTest?
23%🤩 Excited
46%🤔 Cautiously optimistic
20%😰 Worried
11%Other (see reply)
90 votes • Final results
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How do you feel about Catchpoint's acquisition of WebPageTest?
23%🤩 Excited
46%🤔 Cautiously optimistic
20%😰 Worried
11%Other (see reply)
90 votes • Final results
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Using WebPageTest retweeted
Catchpoint@Catchpoint16 Sep 2020
We're thrilled to announce Catchpoint has signed an aggreement with @patmeenan to acquire the hugely popular Webpagetest.org. Get the details here: bit.ly/3iGoMCs
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Replying to @MachMetrics
WebPageTest...😲
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WebPageTest
XKCD Comic
@xkcdComic17 Aug 2020
Dependency xkcd.com/2347/ m.xkcd.com/2347/
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Using WebPageTest retweeted
Doug Sillars 🌻@dougsillars14 Aug 2020
Replying to @AndyDavies @HTTPArchive
Favourite waterfall for Favicons: 308 redirect to a DVD image of FreeBSD.
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I've just updated my WebPageTest waterfall post: nooshu.github.io/blog/2019/1… • Inline script execution visualised • How to test a 404 pages web performance • How to delve into the download chunk data • What are empty gaps between download data #webperf #perfmatters
See the Raw Details tab for detailed information about the download chunks.

ALT See the Raw Details tab for detailed information about the download chunks.

Inline script execution can be seen at the same time as the HTML is downloading (pink lines).

ALT Inline script execution can be seen at the same time as the HTML is downloading (pink lines).

Setting a minimum test duration is key to testing a 404 pages performance.

ALT Setting a minimum test duration is key to testing a 404 pages performance.

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