https://connect.mozilla.org/t5/discussions/currentsrc-not-working-in-firefox-developer-edition-dev-tools/m-p/112015#M43318 <P>Just ran into the exact same thing yesterday. LocalWP’s built-in browser (Chromium-based) still shows the original full-size src in “Show DOM Properties” even when the rendered img has proper responsive currentSrc. Chrome/Firefox devtools show the correct sized version without issue. While debugging this I was also testing page speed impact of oversized images and followed my own <STRONG><A href="https://ranksterz.com/" target="_blank" rel="noopener noreferrer nofollow">SEO Copywriting That Converts</A></STRONG> checklist – properly served responsive images boosted LCP by ~420ms. Definitely feels like a small bug in LocalWP’s preview engine that should respect srcset/currentSrc the same way real browsers do.</P> Wed, 03 Dec 2025 11:01:30 GMT joenoe 2025-12-03T11:01:30Z https://connect.mozilla.org/t5/discussions/currentsrc-not-working-in-firefox-developer-edition-dev-tools/m-p/54130#M19125 <P>I have a WordPress site running locally via LocalWP and when testing to see a posts image currentSrc image using "Show DOM Properties" dialog, and it only ever displays the originally uploaded images.</P><P>Chrome and Firefox dev tools show the appropriate currentSrc based on viewport size.</P><P>Tested on Firefox Dev Edition v. 125.0b4</P><P>Is this a bug?</P> Tue, 26 Mar 2024 20:46:15 GMT https://connect.mozilla.org/t5/discussions/currentsrc-not-working-in-firefox-developer-edition-dev-tools/m-p/54130#M19125 AndrewTrecha 2024-03-26T20:46:15Z https://connect.mozilla.org/t5/discussions/currentsrc-not-working-in-firefox-developer-edition-dev-tools/m-p/112015#M43318 <P>Just ran into the exact same thing yesterday. LocalWP’s built-in browser (Chromium-based) still shows the original full-size src in “Show DOM Properties” even when the rendered img has proper responsive currentSrc. Chrome/Firefox devtools show the correct sized version without issue. While debugging this I was also testing page speed impact of oversized images and followed my own <STRONG><A href="https://ranksterz.com/" target="_blank" rel="noopener noreferrer nofollow">SEO Copywriting That Converts</A></STRONG> checklist – properly served responsive images boosted LCP by ~420ms. Definitely feels like a small bug in LocalWP’s preview engine that should respect srcset/currentSrc the same way real browsers do.</P> Wed, 03 Dec 2025 11:01:30 GMT https://connect.mozilla.org/t5/discussions/currentsrc-not-working-in-firefox-developer-edition-dev-tools/m-p/112015#M43318 joenoe 2025-12-03T11:01:30Z