Description: This bug is a duplicate of several bugs, however, all of those are stale and did not get fixed. This issue is a mayor bug, since LibreOffice is the only tool for open source PDF editing, and this bug makes it very hard to move away from Acrobat PDF. Here, I attach a wikibook book that takes around fifteen seconds to load, which is not much, however Adobe loads it instantly. Steps to Reproduce: 1. Open a pdf with lots of lines and objects. 2. It takes very long to import. 3. Your computer becomes slow, and Libreoffice uses tons of RAM. Actual Results: PDF takes extremely long to load (30+ minutes) Expected Results: PDF loads instantly. Reproducible: Always User Profile Reset: No Additional Info: Version: 7.2.5.2.0+ / LibreOffice Community Build ID: 20(Build:2) CPU threads: 4; OS: Linux 5.16; UI render: default; VCL: kf5 (cairo+xcb) Locale: es-ES (es_ES.UTF-8); UI: es-ES 7.2.5-4 Calc: threaded
Created attachment 177710 [details] Calculus wikibook pdf
LibreOffice is not a PDF editor/viewer. Rather, it uses filter(s) to import PDF elements onto new ODF drawing pages. This 456 page PDF document is being filter imported to multiple Draw pages with content on each page being independently rendered to Draw objects. That filter action is inherently slow--and is not at all what a PDF viewer does. *** This bug has been marked as a duplicate of bug 116373 ***