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Can you convert a 1.3 PDF format version to a 1.4 or higher PDF format version? It does not appear you can do what appears to be straightforward. You can convert to other application formats, but not PDF. My scanner does a 1.3 file format version, but the upload site requires a 1.4 or above.
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Open your PDF with Acrobat Pro, Acrobat Standard or Acrobat reader.
Add a comment.
Save.
Remove the comment.
Save or save as.
Now your PDF is 1.6 or 1.7
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I did get it resolved enough for what I am doing. Opened the PDF document in Word, made a change, and saved it; removed the change and saved it back as a PDF, and it has a file format version of 1.7. Thanks for the help!
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"I can not save it; see the screenshot"
Of course you can: use Save As.
Make an edit or add a comment to see "Save" not greyed out.
"a user can not change the file version format without agreeing to a subscription at about $10 a month or $120 a year"
No, Acrobat Reader allows to comment and save any PDF file.
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I just tested a comment, and it did seem to work.
It does not look like you can do an edit without signing up for a free trial, which I do not want to do.
It does not look like you can do a Save As without changing the file type.
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[MOVED TO THE ACROBAT READER DISCUSSIONS]