Also I'll add a screenshot of a similar file on the iPhone. I'll add a screenshot, to the left Font Book with "Arial" available, in the Middle the "Preview" version with the Numbers for the lessons and every important information missing, to the right the same file opened with Adobe Reader. It is a workaround for the Mac but not satisfying and won't fix the issue on the iPhone.ĭocumentinfo in Adobe told me the used fonts are "Arial", "Arial, Bold" "Arial, BoldItalic" and "Arial, Italic", all of wich are available on the Mac and are fine according to the check. I downloaded Adobe Reader and It is possible to view the content of the PDF. I opened up font book and checked for duplicates and even checking every font didn't help. It seems, like it's not loading the fonts. Since 3 weeks, Preview, both on macOS and on the iPhone are not able to show the content of the pdf. #APPLE FIXES PREVIEW BUT PROBLEMS WITH PDFKIT PDF#Meanwhile, until Apple fixes the issues with the native Mac app, Engst recommends Smile's PDFpen as an alternative for PDF manipulation of all sorts, with Adobe’s Acrobat DC being a more expensive option.I work as a teacher and get my timetable for the next week via email. The PDF sample crashes previewUI with segmentation fault, meaning that a memory corruption was triggered by the PDF. The Background Earlier last year, we obtained a PDF file that cannot be previewed on iOS. #APPLE FIXES PREVIEW BUT PROBLEMS WITH PDFKIT UPDATE#Whether Apple plans to do the same with an update to Preview is still unclear. It is possible that NSO noticed this incremental bug fix, and dived deeper into CoreGraphics. #APPLE FIXES PREVIEW BUT PROBLEMS WITH PDFKIT FOR MAC#It’s not only DEVONthink - a lot of other applications (such as EndNote, Skim, Bookends, and EagleFiler) are also affected.Īpple previously removed functionality in its iWork suite for Mac to conform with iOS, but re-introduced most of the missing features in a later version. And there’s still work left to be done.ġ0.12.2 introduces new issues (it seems that Apple wants to fix at least the broken compatibility now) and of course fixed almost none of the other issues. And to make things worse, lots of former features are now broken or not implemented at all, meaning that we had to add lots of workarounds or implement stuff on our own. However, it was released way too early, and for the first time (at least in my experience) Apple deprecated several features without caring about compatibility. If editing a PDF in Preview in unavoidable, be sure to work only on a copy of the file and retain the original in case editing introduces corruption of any sort.Īs to why issues have arisen in Apple's native Preview application, Engst quotes approvingly the DEVONthink developer Christian Grunenberg, who characterizes the rewritten version of PDFKit in Sierra as a "work in progress":Īpple wants to use a common foundation for both iOS and macOS. It pains me to say this, speaking as the co-author of "Take Control of Preview," but I have to recommend that Sierra users avoid using Preview to edit PDF documents until Apple fixes these bugs. Writing on the online Apple newsletter website, Engst backs up fellow developer Craig Landrup's claim that Apple's decision to rewrite the PDFKit framework for macOS 10.12 has broken basic functionality that PDF-related developers rely on, such as compatibility with ScanSnap and Doxie scanners. The recommendation comes from TidBITS publisher Adam Engst. Mac users running macOS Sierra 10.12.2 are being urged to avoid using Preview to edit PDFs until Apple fixes several bugs in the app that can cause corruption issues in the document format.
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