Steps to replicate the issue (include links if applicable):
What happens?:
{ "continue": { "iistart": "2025-12-24T15:57:12Z", "continue": "||" }, "query": { "pages": { "-1": { "ns": 6, "title": "File:A book of New England legends and folk lore in prose and poetry (bookofnewengla00drak 1910).djvu", "missing": "", "known": "", "imagerepository": "shared", "imageinfo": [ { "thumburl": "https://upload.wikimedia.org/wikipedia/commons/thumb/4/41/A_book_of_New_England_legends_and_folk_lore_in_prose_and_poetry_%28bookofnewengla00drak_1910%29.djvu/page2-1024px-A_book_of_New_England_legends_and_folk_lore_in_prose_and_poetry_%28bookofnewengla00drak_1910%29.djvu.jpg", "thumbwidth": 1024, "thumbheight": 1553, "responsiveUrls": { "1.5": "https://upload.wikimedia.org/wikipedia/commons/thumb/4/41/A_book_of_New_England_legends_and_folk_lore_in_prose_and_poetry_%28bookofnewengla00drak_1910%29.djvu/page2-1536px-A_book_of_New_England_legends_and_folk_lore_in_prose_and_poetry_%28bookofnewengla00drak_1910%29.djvu.jpg", "2": "https://upload.wikimedia.org/wikipedia/commons/thumb/4/41/A_book_of_New_England_legends_and_folk_lore_in_prose_and_poetry_%28bookofnewengla00drak_1910%29.djvu/page2-2048px-A_book_of_New_England_legends_and_folk_lore_in_prose_and_poetry_%28bookofnewengla00drak_1910%29.djvu.jpg" }, "url": "https://upload.wikimedia.org/wikipedia/commons/4/41/A_book_of_New_England_legends_and_folk_lore_in_prose_and_poetry_%28bookofnewengla00drak_1910%29.djvu", "descriptionurl": "https://commons.wikimedia.org/wiki/File:A_book_of_New_England_legends_and_folk_lore_in_prose_and_poetry_(bookofnewengla00drak_1910).djvu", "descriptionshorturl": "https://commons.wikimedia.org/w/index.php?curid=180603038" } ] } } } }
Trying 100px ends up with "https://upload.wikimedia.org/wikipedia/commons/thumb/4/41/A_book_of_New_England_legends_and_folk_lore_in_prose_and_poetry_%28bookofnewengla00drak_1910%29.djvu/page2-100px-A_book_of_New_England_legends_and_folk_lore_in_prose_and_poetry_%28bookofnewengla00drak_1910%29.djvu.jpg"
What should have happened instead?:
A thumbnail URL that follows T414805 and is no larger than the original file.
Software version (on Special:Version page; skip for WMF-hosted wikis like Wikipedia):
Other information (browser name/version, screenshots, etc.):