Safari - Some thumbnails not rendering

[ewlarson]

https://geo.btaa.org/?f%5Bdct_isPartOf_sm%5D%5B%5D=12d-04&per_page=10

Safari

Chrome / Firefox

[ewlarson]

More info here. Appears Safari is rejecting the original image too: https://isac-idb-static.uchicago.edu/multimedia/3001247/1014604_APCS_Arabian_Sea_AP-20_3rd_Edition_1951_preview.1920x1200.jpg

That URL will display an image in Chrome, but in Safari it will be blank.

[mberkowski]

@ewlarson Safari rejects this image outright from its original URL, or is it rejected if called via XHR or dynamically loaded?

[ewlarson]

Rejecting is the wrong word here... I don't know quite how to phrase it. Safari is receiving (response) and loading (there are bytes here) a JPEG it just does not render — preview is just an empty/blank canvas.

[ewlarson]

Our thumbnail image in the Geoportal is really just a cropped variant of that original from U of Chicago... I don't know that there is anything here for us to resolve. We should pass this issue back to U of Chicago for their tech staff to troubleshoot.

[ewlarson]

One other thing! @njvack suggested if we run these JPEGs thru an image optimization tool (like Kraken), it might just fix them and that does indeed seem to fix the example from above.

Original (Does not load in Safari)

https://isac-idb-static.uchicago.edu/multimedia/3001247/1014604_APCS_Arabian_Sea_AP-20_3rd_Edition_1951_preview.1920x1200.jpg

Kraken'd (Does load in Safari)

https://dl.kraken.io/web/80de08dfcda5c0dd9a04278115f0e3ae/1014604_APCS_Arabian_Sea_AP-20_3rd_Edition_1951_preview.1920x1200.jpg

[njvack]

Yeah, jpeginfo suggests that the originals are Fancy Jpegs. It's super weird that Safari won't render them — they show up fine with quicklook and Preview and hey I would have expected those tools to use the same image libraries as Safari but ¯_(ツ)_/¯