html - Feeling completely lost with responsive images using srcset and sizes -


i've been trying optimize images on photography site using srcset , sizes, inspector in browser telling me it's loading largest image size. confirm this, added new image numbers can see sure size image being loaded.

but no matter how mess media queries, can't work properly. assume issue related writing media queries incorrectly, i'm kind of @ wits end. i've tested in every way possibly think of. read on post here, browser caching larger image. tried in multiple browsers, , in incognito mode.

as shown below, images called "test" load middle sized image, never smallest one.

below section of code. you'll notice i'm using responsively loaded (sized) images in href tag, it's part of lightbox.

you can see page in question @ https://www.jeffreygelt.com/alt/.

here's code:

    <a href="/alt/img/portfolio/test-1000x667.jpg"          data-sizes="(min-width: 880px) 1000px, 400px"         data-srcset="             /alt/img/portfolio/test-400x267.jpg 400w,             /alt/img/portfolio/test-800x533.jpg 800w,             /alt/img/portfolio/test-1000x667.jpg 1000w">         <picture>             <img class="img-responsive"                 sizes="(min-width: 880px) 400px,                        (min-width: 660px) , (max-width: 879px) 800px,                        (min-width: 400px) , (max-width: 659px) 400px, 1000px"                 srcset="                     /alt/img/portfolio/test-400x267.jpg 400w,                     /alt/img/portfolio/test-800x533.jpg 800w,                     /alt/img/portfolio/test-1000x667.jpg 1000w"                 src="/alt/img/portfolio/test-1000x667.jpg"                 alt="asbury park">         </picture>     </a>      <a href="/alt/img/portfolio/andy-533x800.jpg"          data-sizes="(min-width: 880px) 533px, 395px"         data-srcset="             /alt/img/portfolio/andy-395x593.jpg 395w,             /alt/img/portfolio/andy-419x629.jpg 419w,              /alt/img/portfolio/andy-533x800.jpg 533w">         <picture>             <img class="img-responsive"                  sizes="(max-width: 880px) 533px, 395px"                 srcset="                     /alt/img/portfolio/andy-395x593.jpg 395w,                     /alt/img/portfolio/andy-419x629.jpg 419w,                     /alt/img/portfolio/andy-533x800.jpg 533w"                 src="/alt/img/portfolio/andy-533x800.jpg"                 alt="andy's portrait" />         </picture>     </a>

for column view simple: sizes="(max-width: 400px) 99vh, (max-width: 880px) 49vw, 285px". hope start understand (with example). lightbox view little bit more complicated because both width , height dependent , sizes supports width descriptors. in case of viewport width , viewport height constrained images can calculate image width using vh unit in combination width aspect ratio of image.

you can see more informations here: can use <picture> both height , width-constrained images?

also note: browser multiply calculated sizes length devicepixelratio generate needed width of image. , chrome loads largest image, if in browser cache.


Comments

Post a Comment

Popular posts from this blog

asynchronous - C# WinSCP .NET assembly: How to upload multiple files asynchronously -

i using winscp .net assembly uploading files. want upload multiple files asynchronous way. have created method works single upload. public class uploadingdata { private sessionoptions _sessionoptions; private session _session; //connection etc private void onconnected() { foreach (var fileinfo in localfileslist) { var task = task.factory.startnew(() => uploadfilesasync(fileinfo)); } } private async task uploadfilesasync(string file) { string remotefilepath = _session.translatelocalpathtoremote(file, @"/", "/test_data_upload"); var uploading = _session.putfiles(file, remotefilepath, false); //when done await task.run(() => thread.sleep(1000)); } } please suggest me correct way. thanks you can use backgroundworker class this: string[] images = new string[50]; foreach (var path in images) { backgroundworker
Read more

aws api gateway - SerializationException in posting new Records via Dynamodb Proxy Service in API -

i getting "__type": "com.amazon.coral.service#serializationexception" as reply in postman & in test console in api gateway trying post record directly dynamodb using api proxy services.. referring aws article - https://aws.amazon.com/blogs/compute/using-amazon-api-gateway-as-a-proxy-for-dynamodb/ here's mapping { "tablename": "tablenamegoeshere", "item": { "id" : "$context.requestid" "eventname" : "$input.path('$.eventname')", "timestamp" : $input.path('$.timestamp'), "answers": "$util.parsejson($input.path('$.answers'))" } } update: did asked ... , worked if try add array of json objects gives me above same error - here's trying now. please - couldnt find on google well #set($inputroot = $input.path('$')) { "tablename": "answer", "item": {
Read more

asp.net - Problems sending emails from forum -

i have been redesigning site has message board, has been written guy looked after site. it has few problems , written in .asp , uses .mdb files database. you can see whole thing here . feel free post if helps, test thing have set using original files , new database. the basic problem when posts message, supposed email sent them, have posted it. when replies, originator supposed message, replier has been posted. i’d have thought @ point in process there should script/file in postmessage.asp? the postmessage.asp page below. <% option explicit %> <!-- #include virtual="common/adovbs.inc" --> <html> <head> <meta http-equiv="content-type" content="text/html; charset=windows-1252"> <meta name="generator" content="microsoft frontpage 4.0"> <meta name="progid" content="frontpage.editor.document"> <title>new page 2</title> <base target="_self"
Read more