Sleazy Fork is available in English.
Turn a page of thumbnails into high-res images
< Feedback on Eza's Gallery Swallower
Line 674, change article.post-preview:not(.blacklisted) to article.thumbnail:not(.blacklisted)
They changed how thumbnails are labeled. Fixed E-Hentai.org while I was at it, since I noticed that stopped working. Same issue.
This has worked great wonders for me the past few months, and I thank you for that. Also could you perhaps look into e621, I don't know what changed but the swallow button no longer shows up.