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"Not a valid PDF" on Android and iOS

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Hello, I am starting to work on my paperless system with Evernote premium. It has been going well except one problem.


A PDF file can be opened successfully with Evernote on my PC, but when I try to open the same file on my Android phone or my iPad, it can't be opened, mentioning "file is not a valid PDF". This problem only happens to one particular PDF file out of the manys in my database so far.


I wonder if anyone encountered such a problem before? What caused this and how it can be avoided? What I am worrying now is the other PDF files in my database... and also the reliability of using Evernote to store my database containing many PDFs :(


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Jefito: the PDF can be opened on my PC, so at least on my PC it is not corrupted. I imported the file to Evernote on my PC, so i think it's the original imported file... so the file got corrupted when sync to the server? Can this actually happen? And I tried different apps opening the PDF, still no luck.... 


ScottLougheed: no it is not encrypted...

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  • 3 weeks later...

Hi all


I have the same problem. Windows not problem, Android on Nexus 7 and other device with Android 4.4.2.


Tried to open with 5 different apps.


It seems that the evernote app is not downloading the attachment correctly or doesn't verify it after download. Because 1 out of 10 tries work, especially on smaller PDFs.


Anyway, quite annoying.




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  • 1 month later...

I have no problems reading PDF on PC, can send same file to both of my android devices and open with any reader except Evernote.  I am testing this and Onenote and Evernote great except this one issue but it is huge.  I get error I have wrong processor for architecture,  have not found any help for this error.  I have not dug that deep but if I can not make PDFs work across devices it is a showstopper.  Any hints on where to look would be appreciated.

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  • 2 weeks later...

I, too, have this problem.  I believe I can reliably open the files with Skitch, however.  Unfortunately, Skitch is not a desirable PDF viewer.


Evernote appears to corrupt the PDF file BUT it's readable using the **Evernote** PDF reader.  On Evernote's part this is either sloppy or deliberate; either way it's infuriating.


Anyway, try opening the files with Skitch.  It's my work around.



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  • 2 years later...
  • Level 5
12 hours ago, GrahamW said:

With the recent update, this seems to have reappeared as a problem.  PDFs readable on other platforms aren't on Android.

What's the version number? I just tried it, and the PDF opened fine. What app do you use on your phone to handle PDFs?

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