Today, I was told my recently uploaded Blocs website had broken images. I couldn’t confirm any problem on my 5K iMac or iPhone, but when I checked various PCs and old iMacs in the office, sure enough, the images were not loading. I used multiple browsers to confirm it was NOT a cache issue on my iMac or iPhone. Apparently, I had forgotten to upload the 1x images to my web server. Only the 2x images were on the server. This concerns me because logically I would think that browsers should default to displaying the 2x images if the 1x image cannot be found on the server – very frustrating.
How can I make a browser like FireFox display only 1x images on a 5k iMac, which would allow me to confirm if 1x images are missing on the server? (Safari is my main browser, but I use Firefox for testing, so I don’t care if I force it to always display low resolution images.)
I basically need to find an easy and fast way to confirm if a 1x image is missing on the server via web browser.