when the page number of the pdf file is bigger then 300, the extract_pages(f) is very slow

[tianyongliu]

中国神华：中国神华2023年度报告.PDF

code is very simple

from pdfminer.high_level import extract_pages
file_path = "***.pdf"
with open (file_path, "rb") as f:
for page in extract_pages(f):
page_index = page.pageid
print(page_index)

it cost about 10 minutes.

[dhdaines]

Well, extract_pages is actually doing layout analysis on every page, so one might expect this to be slow! Do you find that it gets slower with each successive page?