I went to my company's website and launched a few PDFs from my iPhone and iPad (both on iOS 8) while using Safari and noticed that copy, images and logos are displaying vertically stretched out in the PDF. I'd never experienced this before on previous iOS versions so I'm curious if there's a PDF encoding issue we need to address that plays nice with iOS 8. Any thoughts?
iPhone 5, iOS 8
I am so much interested in your report but my iPhone 5 and iPad2 has not (happily) encountered this issue yet.
But I have read a similar report in Japanese twitter as well.
What is your iPhone? iPhone 5S? What is your iPad? iPad3? iPad mini?
And in your iPhone and in your iPad, do (almost) all PDFs, which are not excluded to your company's PDFs, suffer from this bug?
Are your PDFs directly linked from the web site? Or are they shown within iframe, frame, or something?
If there are sample PDFs or some screenshots, they would be helpful in solving this issues.
blufire wrote:
copy, images and logos are displaying vertically stretched out in the PDF.
Could you post a screenshot here of what you are seeing? It would be best to use a pdf from a public site where you can provide the url so that others can try to duplicate your experience.
Workaround: If you open the PDF in another application that doesn't use WebKit to render the document (like iBooks or Adobe's PDF viewer app), it should render correctly once again.
I finally got how this bug can be reproduced.
http://www.broadband-xp.com/test/ios/hello_yoko.pdf
is the example.
In a nutshell, if it is the landscape and the width of the PDF is longer than the height, it is stretched.
I am sorry but the explanation of how this bug can be reproduced was wrong.
All landscape pdfs do not show problems in Safari in iOS 8.0.
If the PDF has a rotation flag within it, it seems, Safari in iOS 8.0 can not handle it correctly.
shimax21 wrote:
If the PDF has a rotation flag within it, it seems, Safari in iOS 8.0 can not handle it correctly.
What is a rotation flag?
So far it looks like the issue is only affecting our PDFs with landscape orientation when you launch them in Safari on iOS 8. Portrait and landscape PDFs launch ok on other browsers/ readers, but since Safari is the native browser in iOS, it's important we resolve this.
For comparison, I launched a landscape PDF using Safari on one of our other websites and could not see any stretching. I also did not find any difference in the web links which may have affected the launch behavior. In looking at both file properties though, I noticed the PDF with the issue was created using Adobe Distiller whereas the one that launched ok was not. We are re-running a couple of PDFs without using Distiller to see if this is part of the root cause (not sure why Distiller was used in the first place).
Other thoughts? Thank you all for your comments.
Other examples are:
http://www.tezuka-i-h.jp/temp/2013examination/2013Enyusi-kekka.pdf
http://dressmwforsuccess.com/investor_presentation_nov2013.pdf
http://cfassociates.samuraiz.co.jp/default/assets/File/CF_10_license_price.pdf
http://www.hitachi-solutions.co.jp/pdf/client_management01.pdf
http://www.comdesign.co.jp/pdf/ct-e1saas_price.pdf
http://labs.appligent.com/files/2013/03/recognizing_malformed_pdf_f.pdf
http://fordy.jp/products/file/20131219120808.pdf
>What is a rotation flag?
It is difficult to explain it if you do not have a programmatic knowledge about the structure of PDF.
But maybe "PageRotation" is the exact English word. I am sorry for my poor English.
cf.
http://www.debenu.com/docs/pdf_library_reference/PageRotation.php
https://pspdfkit.com/api/Classes/PSPDFPageInfo.html
http://search.cpan.org/dist/PDF/PDF/Parse.pm
If PageRotation is not 0 but 90 or something, it seeems, the problem occurs in the case of Safari in iOS 8.0.
The following links solution seemed to fix the issue for me:
http://www.appligent.com/my-pdf-document-is-rotated-how-do-i-fix-that/
It does indeed appear to be related to page rotation.
Does anybody know if its a confirmed bug that will be fixed?
I reported this bug to Apple support more than three months ago, and then they marked this bug as the duplicate of the one which somebody had already reported.
So the bug itself has been confirmed by Apple but they have never promised us to fix it.
Could you link to that bug? If its possible...
The bug report to Apple is not in the public.
Nobody else but Apple support and the reporter himself can see it.
Is ther a fix for this yet? I have a number of 11x17 PDFs files on my website. Since updating to iOS 8 on my iPad, I've noticed that the page shrinks and is distorted when viewed on iPad or iPhone. The same PDFs can be viewed on my desktop without a problem. Curiously, I tried to open some 11x17 files posted a long time ago (3 years approx.) and the files open fine. Any PDFs done lately get distorted. This is also typical for any PDFs file I have been able to find online. I can only reproduce the problem with 11x17 pages in PDFs format. Letter size documents seem to work fine.
what to do.
Hello, has anyone found a solution to this problem?
I publish online regularly PDF convert from Indesign or convert from my printer (scan to pdf) and on my computer with IE11, google chrome or adobe acrobat, these PDFare OK but on my Ipad they are stretch, see my screenshot to understand the difference that I can see
Today I upgraded iOS to 8.3 and it seems to me that this bug has been fixed in the long run.
PDFs rendering stretched in iOS 8
