<!DOCTYPE html> <html reftest-zoom="0.5" class="reftest-wait"> <head> <style>img { width: 50px; }</style> <script type="application/javascript"> // reftest-zoom is only applied at onload, so ensure the source-selection // has happened after that function clearWait() { document.documentElement.classList.remove("reftest-wait"); } window.addEventListener("load", function() { setTimeout(function() { var img = document.querySelector("img"); img.onload = clearWait; img.onerror = clearWait; img.src = img.src; }, 0); }); </script> </head> <body> <img srcset="50.png 0.5x, 100.png 1x, 200.png 2x, 300.png 3x, 400.png" width="1000"> <p>Ensure that width is honored and does not affect selection process</p> </body> </html>