Comment by danhite

caveat emptor re long hashtag techniques on (ipad) safari ...

you may think safari has no effective url limit (i.e. very high) but if you ever treat a url within the url bar as editable you are at risk to be silently truncated to 4096 bytes (eg select a character in the url bar and replace it)

also re-testing potential ~buffer limits in various ways on ipadOS 26.2 safari just now slowed my safari ui down to a crawl

eg after saving example.com with ~20k #hashtag to reading list -- each keystroke in this reply was taking several seconds, so I had to force quit safari and retype to post this warning