3 ms·

Perhaps Distill Web Monitor or PageProbe? https://addons.mozilla.org/en-US/firefox/addon/distill-web-monitor-ff/ https://addons.mozilla.org/en-US/firefox/addon

Perhaps Distill Web Monitor or PageProbe? https://addons.mozilla.org/en-US/firefox/addon/distill-web-monitor-ff/ https://addons.mozilla.org/en-US/firefox/addon/distill-web-m... https://addons.mozilla.org/en-US/firefox/addon/pageprobe/ https://addons.mozilla.org/en-US/firefox/addon/pageprobe/