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Letters disappear when editing (multiple Acrobat versions on PC)

Community Beginner ,
Sep 15, 2017

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I have multiple clients trying to edit PDFs, and when they do individual letters seem to randomly disappear. This is happening on Windows, on two different versions of Acrobat (Acrobat DC Perpetual Version 2015.006.30033 and Acrobat XI Version 11.0.0). We can not replicate the problem on Mac OS with DC Pro 2017 release.

Any ideas as to why this is happening and how to prevent it?

We are not merging documents, just using the edit PDF tool to copy and paste elements from other PDFs. The affected text boxes are not the ones being copied/edited.

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Letters disappear when editing (multiple Acrobat versions on PC)

Community Beginner ,
Sep 15, 2017

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I have multiple clients trying to edit PDFs, and when they do individual letters seem to randomly disappear. This is happening on Windows, on two different versions of Acrobat (Acrobat DC Perpetual Version 2015.006.30033 and Acrobat XI Version 11.0.0). We can not replicate the problem on Mac OS with DC Pro 2017 release.

Any ideas as to why this is happening and how to prevent it?

We are not merging documents, just using the edit PDF tool to copy and paste elements from other PDFs. The affected text boxes are not the ones being copied/edited.

TOPICS
Edit and convert PDFs

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12.2K

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Sep 15, 2017 1
Adobe Community Professional ,
Sep 15, 2017

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When you say you are not merging, you are probably referring to the problem described here: Workaround for Missing Characters After Merging PDF Files

It is possible that you are dealing with the same root cause, but the effect does not show up right away, and you have to actually try to add new content (or modify content) to the file. Would you be able to share one of these files? 

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Sep 15, 2017 1
Community Beginner ,
Sep 15, 2017

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I have previously tried the workaround in that link and it didn't work in this instance, which is what led me to believe it is a different issue.

I am unable to share a PDF because the content is proprietary, and we haven't been able to replicate the problem to create a dummy example file.

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Sep 15, 2017 0
Adobe Community Professional ,
Sep 15, 2017

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Without access to the file it's impossible to say why this is happening. It has to do with something in this particular file. Chances are that the file is corrupt.

You do have Adobe Acrobat Pro, so you can try the preflight tools to see if checking for syntax errors or for font errors will turn up anything. You can also try to see if fixing potential font problem will cure the problem.

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Sep 15, 2017 1
Community Beginner ,
Sep 15, 2017

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Thanks. I've run preflight and found no font errors. The syntax errors found are:

  • Key missing though required by other key
  • Pg reference missing for direct kid MCID

I'm not sure what either of these mean, if they could possibly be causing the issue, or how to fix. Any insight?

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Sep 15, 2017 0
Adobe Community Professional ,
Sep 15, 2017

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Not without more information. These things only make sense once you can map them to a particular object in the PDF file. But, this shows that there is something wrong with your file, and that may explain the behavior you are seeing.

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Sep 15, 2017 1
Community Beginner ,
Aug 27, 2018

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what about in acrobat dc, there doesn't seem to be a link to "preflight tools"

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Aug 27, 2018 1
Community Beginner ,
Aug 27, 2018

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I am having the same problem editing PDFs in Acrobat DC.

Letters randomly disappear.  It is very frustrating.

It happens when I am inserting PDFs and combining them, as I scroll up and down editing pages, the letters just start disappearing.

I have to delete the pages and re-insert them and constantly save in case it starts happening again.

adobe fail.jpg

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Aug 27, 2018 0
Community Beginner ,
Jul 11, 2018

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Please try this,

1.    Open the document with missing letters in Acrobat.

2.    Needs to be done only once: Go to menu -> View -> Tools -> Print Production (It will add Print Production to the tools set on the right)

3.    Go to Tools (on the right) -> Print Production -> Preflight (It will open a small popup window with a lot of tech info on it)

4.    Click small button “Analyze and fix” on the Preflight popup at the right bottom corner, it will ask you to save the document, you can leave the same file name. It will ask to replace – click yes.

5.    It will take a while to analyze the document and fix all conflicts with fonts, etc. And it will make PDF document slightly larger.

6.    You can inspect fixed file and close Acrobat – document should be fixed and saved.

Hope that helps. (Using Acrobat XI Pro)

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Jul 11, 2018 1
New Here ,
Sep 13, 2019

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This solution removed all color from my PDF and didn't fix the missing letter issue (in my case, all t's and i's are missing).

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Sep 13, 2019 0
Community Beginner ,
Oct 17, 2019

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Thank you for the suggestion, I have the same problem (font/many characters missing in combined pdf) and would like to try the solution proposed, but in my Acrobat X pro there is no Print production option in the View-Tools -menu. Any help?

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Oct 17, 2019 0
New Here ,
Feb 20, 2020

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Hello, 

I tried this fix, and it now says the file is gone and cannot be opened.  I did find the file as a tmp. but it still has the missing letters. I did convert the original file from MSWord, and have been adding text from differnt document. But the letter that are missing are actually the new information that I typed in, not converted. 

Any ideas?

Follow up. I went into the doc and literally redid the font. I changed the font, to anything, and then back to TRN and it cleared the problem up. Then I saved it again on my desktop and opened it and all seems fine - wierd.

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Feb 20, 2020 1
New Here ,
Jun 23, 2020

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I just stumbled across this same issue and fix. I can confirm that changing the font to anything else, and then back to the original font (in my situation from Calibri to Calibri light, and back again) has fixed my problems. 

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Jun 23, 2020 3
New Here ,
Jul 22, 2020

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dylwalk, you're a GENIUS. I've been dealing with these missing letters for YEARS. Thanks so much.

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Jul 22, 2020 0
New Here ,
Nov 06, 2020

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I tried this, but alas it didn'twork for me.

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Nov 06, 2020 0