# VNS FPDF import and save pages

**URL:** <https://forum.xojo.com/t/vns-fpdf-import-and-save-pages/87964>\
**Category:** General\
**Created:** [March 29, 2026, 7:35pm UTC](https://forum.xojo.com/t/vns-fpdf-import-and-save-pages/87964 "2026-03-29T19:35:04Z")\
**Posts on this page:** 1\
**Showing post:** 12

<div class="post-metadata">

**Author:** ![Jean-Yves\_Pochez](https://forum.xojo.com/user_avatar/forum.xojo.com/jean-yves_pochez/32/21769_2.png) [@Jean-Yves\_Pochez](https://forum.xojo.com/u/Jean-Yves_Pochez)\
**Post date:** [April 2, 2026, 8:49pm UTC](https://forum.xojo.com/t/vns-fpdf-import-and-save-pages/87964/12 "2026-04-02T20:49:03Z")

</div>

the error you get is because you must install the ZLIB1.DLL library next to your exe file under windows  
this library is included in macos systems but not on windows  
you can get it here : [ZLIB DLL Home Page](https://www.winimage.com/zLibDll/index.html)  
or you can purchase my ZLib premium module for the VNS FPDF Xojo code and it will then work everywhere.

this happens because the pdf you try to import contains some FlatDecode compressed streams that need ZLib to decompress, and it is not part of windows 11.  
I will fix this error on the next release to have a less brutal error !

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