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Andy Davies @AndyDavies Gloucestershire, UK

Independent Web Performance Consultant. Arduino dabbler, veg grower. Husband to @nickidavies, Dad to @ninjanails and Jon He/Him Co-organiser @LDNWebPerf

738 Following   5,772 Followers   53,982 Tweets

Joined Twitter 10/22/07


Finally sent the draft of a post I’ve been writing for a few years to some friends for their opinions Think it mig… https://t.co/HRUGQsXGY0 @yoavweiss Wrap it in an event listener! Many years ago did suggest to Ilya that we should have an attribute to en… https://t.co/0G58n1SNcRBy comparison, Bitcoin uses > 6 times more energy per year than Google. The world would not miss out on anything if Bitcoin vanished.
Retweeted by Andy DaviesMic drop from @jonsnowC4 https://t.co/j3kvQVu2lI
Retweeted by Andy DaviesSo, Edge is pretty good on the Mac. Oh, and Bing has noticeably less ads. #becomingamicrosoftfanboi
Retweeted by Andy Davies
9/29
2020
@HenriHelvetica @jensimmons Will you be releasing the videos (clashes with something else I've got on) @rnebhwani I've not done it with an SPA but believe it should be possible if the SPA is instrumented correctly (… https://t.co/V5yiq6SSUn @AndyBeard Not sure if you mean the HTML, the resources it uses or something else? Even without that information r… https://t.co/oDWbtHyo4P @tunetheweb @HTTPArchive @____lighthouse Scores push people in the right direction but the relationship between spe… https://t.co/sAroXgRNU1 @tunetheweb @HTTPArchive @____lighthouse As the lighthouse scoring is based on the distribution of metrics from HTT… https://t.co/JFsfoaQ0yOReminder: "Ecommerce Homepages" - making them effective - is today's #EcomChat topic at 1pm UK time. Do join us th… https://t.co/tMDWHMnESg
Retweeted by Andy DaviesAre you a fan of reasonably-priced books/ebooks, but don’t want to line Jeff Bezos’ solid-gold pockets? @hivestoreshttps://t.co/6COcS9Iwfu
Retweeted by Andy Davies @StuRobson Subsidised too! @ninjanails You're well lit in that photo, but you've got the advantage of that big window next to the table! @krzksz Thanks, I'll put something together a bit later today @ninjanails The vibrancy of you hair doesn't come across on video chatsAnother thing I tend to do with GA data is segment site speed data by buyer vs non-buyers (or converters vs non-con… https://t.co/3oW2Q2z6n7 @brucel If I owned a golf course I'd encourage nature to reclaim it…Even though site speed data in Google Analytics is extremely limited (sample rate is too low and choice of metrics… https://t.co/UEmQdWt7zbThe total area of ancient woodland affected by HS2 is roughly the same as Heathrow's car parking spaces (51000 spac… https://t.co/Vxenwy3Zlj
Retweeted by Andy Davies
9/28
2020
The teenager’s lunches for the week (he’ll turn it into wraps with salad etc) Cooking him a small joint of meat is… https://t.co/hXcVy4CV6f @bagder @icing @jpmens Agreed, just think FF is a niche browser amongst consumers. @bagder @icing @jpmens When I look at customers’ data Firefox is a pretty small share, typically < 1% of visitors
9/27
2020
We often hear from Greens, including very senior ones, that #HS2 is a climate disaster because it won’t be CO2-neut… https://t.co/TTUJzTbdkZ
Retweeted by Andy DaviesAs Greens we share with all our party colleagues a huge respect for the natural world and a love of our country's w… https://t.co/ltaWMcdINW
Retweeted by Andy DaviesPrivate equity companies follow same general model. Load acquisitions with debt, cut costs and hollow out the bala… https://t.co/WmY8qr9OAc
Retweeted by Andy Davies"Today we have economies that need to grow, whether or not they make us thrive. What we need are economies that mak… https://t.co/2OuBZK1ydn
Retweeted by Andy Davies @aaronpeters @TimVereecke Although it involves instrumenting handlers we can measure input delay and then sum them… https://t.co/DoAoe0tk4QGWLAD GWLAAAADDDDD https://t.co/sBTAr4dSB8
Retweeted by Andy DaviesHuh? https://t.co/r4Zww9AMZ3
Retweeted by Andy Davies @TimVereecke @aaronpeters Yeh, sorry missed that in the original Could repurpose the TTI algorithm (… https://t.co/2hLY7I6tS3 @TimVereecke @aaronpeters What would be your end point? And is measuring it more than just summing up the long tas… https://t.co/Ljn5dOmMkJ @aaronpeters @TimVereecke If we're trying to measure how much long tasks are affecting the visitors perception of w… https://t.co/SFiosFSBtL
9/26
2020
@aaronpeters @TimVereecke @rick_viscomi And you evidence is? @cramforce @AMPhtml But there's a danger that team are falling into the trap of perfect is the enemy of good And t… https://t.co/0A4AyDvQdD @aaronpeters @TimVereecke @rick_viscomi So if we can't measure user wait time, is TBT a good proxy for it? I'm no… https://t.co/twQU9ft6sg @aaronpeters @TimVereecke @rick_viscomi So how do you measure the use wait time?Really enjoy watching @BristolBears play rugby Hopefully they’ll take home some silverware this season @cramforce @AMPhtml Does AVIF really resolve it? Tooling isn’t there yet, and performance doesn’t seem to be as go… https://t.co/BCxLr5x2nU @TimVereecke @rick_viscomi The key question for all performance metrics is “How did affect the visitor’s behaviour” @charleshumble @danielbryantuk @GoogleForEdu @khanacademy Track down someone from @GustoHQ @AMPhtml @cramforce Can someone crowdfund <img src=mp4> in Chrome? 😇 @TimVereecke @rick_viscomi Perhaps Total Input Delay is what you want? @TimVereecke Seem to remember from discussions with Google team that interaction delays beyond FID are on their ra… https://t.co/N3lHfHpi0QPrivatise the Royal family, Nationalise their assets and let them live on their intellectual property rights. https://t.co/VZJ4oU5GLs
Retweeted by Andy Davies“In 2016, internal analysis at Facebook found 64% of all extremist group joins were due to their own recommendation… https://t.co/mRBhQIBOpk
Retweeted by Andy Davies @threadreaderapp unroll https://t.co/i5C9PDF1jNAs we've been making #a11y improvements and digital inclusion is always important, we were wondering if you could p… https://t.co/8xftTOxOMt
Retweeted by Andy DaviesFor animations: AVC1 (h264) > HVC1 > WebP > AVIF > GIF Tooling and encode performance for AV1/AVIF is still terrib… https://t.co/SDEv1SFIJE
Retweeted by Andy DaviesState of animated gifs, webp, avif or <img src=mp4> 👉 AVIF is just as good as Safari's <img src=mp4> 👉 GIF decode… https://t.co/XaqjgZh4MT
Retweeted by Andy Davies
9/25
2020
Had a great chat with @tsykoduk / @heroku about how SH/FT helped retail clients respond to the COVID pandemic and U… https://t.co/XSyYdbIK5u
Retweeted by Andy DaviesHuge thanks to the @catchpoint ops team for ramping up on the WebPageTest agent so quickly. There are already a few… https://t.co/QOjElMe8T6
Retweeted by Andy DaviesIn case you were wondering how much excess capacity Germany has... this pop-up at Nuremberg station offers FREE tes… https://t.co/MuQb6tS24V
Retweeted by Andy Davies @stroudwine Thanks, works now! @webmonkeyash @eComm_Live Was a great talk - interesting, educating and I really enjoyed it @stroudwine Looks like the discount for local delivery, and buying 6+ bottles isn't being applied in the checkout p… https://t.co/C7IVguQ5f3Kent will have to rename itself Kentrucky... #kexit
Retweeted by Andy Davies @hankchizljaw @LDNWebPerf I worked for a Sage reseller 30ish years ago - it was built as software for accountants s… https://t.co/WOTUkc0mpI @hankchizljaw For @LDNWebPerf we use Xero and I hate it with avengence Find it unintuitive and clunky, not sure h… https://t.co/pvAsaspF5W @hankchizljaw FreeAgent for personal (comes with my accountant), pretty easy to use though does have it's annoyance… https://t.co/7ESMhseldJToday's absolute must read on future UK-EU trade, deal or no-deal. There are some jaw-dropping figures here. This i… https://t.co/ZiYxdLBRJq
Retweeted by Andy DaviesWhy do many #Brexit types like to refer to the war? Don’t they realise that most of them didn’t fight in it and it’… https://t.co/6SyhLqRBqT
Retweeted by Andy DaviesIs your site behind an F5 device? Make sure it's on v14.1 or later. https://t.co/YBTvXaTt5o
Retweeted by Andy DaviesA cop murdered a black woman and only got charged for the bullets that missed. #BreonnaTaylor #BreonnaTaylorWasMurdered
Retweeted by Andy Davies
9/24
2020
I guess this is Kexit? https://t.co/fahn42TU74 @lara_hogan Other tip I saw in the DevRel Slack was to set my monitor to dark mode when presenting in a window to r… https://t.co/s5G6vNlYY1 @lara_hogan I've got a couple of Lume Cube's with diffusers on stands but can't quite get it right and remove refle… https://t.co/u3Ya0yYvTjNEW Gove confirms a de facto internal border in Kent - rephrasing previous tweet (this is something transport indus… https://t.co/HdFss285m7
Retweeted by Andy DaviesCynical tweet alert: striking that emails that reflect badly on Whitty and Vallance were released to BBC under free… https://t.co/NuGC6zpFI5
Retweeted by Andy DaviesLast year @dot_js and @patmeenan wrote / talked about Cloudflare Workers and WebPageTest as a combo for testing per… https://t.co/4PK9FKimZJGood news for Ireland, bad news for England. EU weather station currently in Reading, but as we are leaving the EU… https://t.co/THLaJejrI0
Retweeted by Andy DaviesMaking it easier for #BrightonSEO attendees to RSVP to talks held by all the brilliant women in our industry! Threa… https://t.co/yjhNBIxliK
Retweeted by Andy Davies @stubbornella Think @danbarker might be able to help youWhen will sending third-party cookies by default be considered non-compatible? I hope the concept of web compatibil… https://t.co/0mAFqZfQEY
Retweeted by Andy Davies @NickiDavies @ninjanails I know I shouldn’t encourage you but… https://t.co/3eHt7c2QRnSame thing applies for performance, you can make it incrementally better over time (and it often does take months) https://t.co/0SmMvvYAlD @argyleink @sergeyche Challenge is that it delays discovery of the imported stylesheets until the one containing th… https://t.co/da15fq1hYh @faisalislam @BBCr4today Faisal I hope you pointed out the RHA have been banging on about this for years. https://t.co/leQX9r4eDz
Retweeted by Andy DaviesThe never ending shit show that is Brexit… “Truck queues could be 7,000 long when Brexit transition ends, ministe… https://t.co/0H0S35aNbl
9/23
2020
@zachleat Managed to find the bug in my Octopress install so now I don't need to switch yet! Keep thinking about u… https://t.co/ts7fDlMCFZMake sure to at least do some testing on real devices/browsers. i.e. CNN blanks out most of the text for several s… https://t.co/Km3jTbIp3Z
Retweeted by Andy Davies @zachleat Not yet, is it any good?I've written a blog post but Octopress keeps failing when I try to re-generate my blog and I have no idea why Gues… https://t.co/Z1ANvViKbsUsing a tool built by @suryamattu, I spent months scanning websites serving privacy-sensitive groups to see what tr… https://t.co/uC9Jmmlz4H
Retweeted by Andy Davies @ericlaw Does it fire off a NEL or similar report? @dougsillars Autumn mate, autumn…On Fri Oct 2nd, I'm talking about 'Reducing the Speed Impact of Third-Party Tags' @brightonseo Going to be coveri… https://t.co/Ed1NktWa70Non binary people may now have legal protection in the UK under the equality act! Wonderful to get some good news f… https://t.co/lEMXMgZuqi
Retweeted by Andy DaviesIt you use WebPageTest this is well worth a watch Future looks bright! https://t.co/vff1LXyUR1This is really good 👏🏻 https://t.co/PMtzRNLOSq
Retweeted by Andy DaviesAnother set of updates to my 'How to read a WebPageTest Waterfall View chart': • Examining undefined 204 status cod… https://t.co/TgfE3SisBM
Retweeted by Andy DaviesTired of copying and pasting tables into #GoogleSheets? Try using "=importhtml" to pull any table or list you need… https://t.co/ORL5Ec4v8o
Retweeted by Andy Davies"Old TV caused village broadband outages for 18 months" - BBC News https://t.co/dJw4dO8cMv https://t.co/PjwJ0uzh8I
Retweeted by Andy Davies
9/22
2020
Conference organizers in a virtual world: send your speakers a calendar invite so the time gets blocked out on thei… https://t.co/L0u7qhrKFN
Retweeted by Andy Davies @stopsatgreen Yeh, East Coast was a success, and think publicy run railways are probably the way forward (most of t… https://t.co/C48Y4E05si @stopsatgreen Nationalised British Rail was never that great, certainly didn't have the investment in rolling stock… https://t.co/5iYweiNXmFHeard a rumour that registering for #brightonSEO is a ranking factor. https://t.co/jKlNMcmhGt https://t.co/BYu0euS7vL
Retweeted by Andy Davies @scottjehl @argyleink Would be interesting to see what 'low priority' means in this case as I've seen bottom of bod… https://t.co/yoX79gyrXd @ecomchat Test cost vs value of the testing tool – they are generally big bundles of JS that have an impact on site… https://t.co/XwCBmUDSTq @JamesGurd @MalteLandwehr @danbarker @ecomchat It's not just video vs still… it's how that video is implemented too… https://t.co/d1qDlTeV8x
9/21
2020

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