Is there a limit to the number of iframes I can insert in one article?

Will using Country Blocker impact the loading speed of my website for allowed users?

How does Country Blocker determine which countries to block, and can I customize this list?

Hi! Would JMP Import Export support import/export of custom modules?
Regards.

I currently have 40,000 items on Joomla 3 .

Can this tool help me smoothly transfer them to Joomla 4?

And can the article URLs be transferred as well? (sef)