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Posted to dev@pdfbox.apache.org by "Bob Swanson (JIRA)" <ji...@apache.org> on 2018/06/24 20:04:00 UTC
[jira] [Created] (PDFBOX-4250) PDF File with embedded fonts: text
extraction fails or returns junk characters
Bob Swanson created PDFBOX-4250:
-----------------------------------
Summary: PDF File with embedded fonts: text extraction fails or returns junk characters
Key: PDFBOX-4250
URL: https://issues.apache.org/jira/browse/PDFBOX-4250
Project: PDFBox
Issue Type: Bug
Components: Text extraction
Affects Versions: 2.0.9
Reporter: Bob Swanson
One of the people that I support created a PDF file from an LibreOffice document, and then misplaced the original document. I believed that I could use PDFBox to extract the text from the PDF, and at least provide that information to the user.
When I ran the text extractor from the "app" jar, on their PDF file I got the following types of messages (many):
...
Jun 13, 2018 5:38:43 PM
org.apache.pdfbox.pdmodel.font.PDSimple
ont toUnicode
WARNING: No Unicode mapping for 7 (7) in
font EXIRGE+Ubuntu
Jun 13, 2018 5:38:43 PM
org.apache.pdfbox.pdmodel.font.PDSimpleont toUnicode
WARNING: No Unicode mapping for 8 (8) in
font EXIRGE+Ubuntu
Jun 13, 2018 5:38:43 PM
org.apache.pdfbox.pdmodel.font.PDSimple
ont toUnicode
WARNING: No Unicode mapping for 1 (1) in
font JTPICY+AndaleMono
Jun 13, 2018 5:38:43 PM
org.apache.pdfbox.pdmodel.font.PDSimple
ont toUnicode
...
The resulting "txt" file is just binary numbers, unless the font is one of the "standard". I ran
the debugger on the PDF file and saw that several fonts were embedded, and thus used low numbers for encoding (1,2,3, etc).
When viewed, the PDF file looks good, but nothing can be copied or pasted from the display (again,standard font seems OK).
The original file was of a sensitive nature, so I was able to re-create the problem with a simpler file.
Running on Ubuntu 16.04
LibreOffice was used to "print" on the cups-pdf "printer" (which may be part of the problem).
Text extract was attempted with pdfbox-app-2.0.9.jar
PDF file is at:
http://swansongrp.com/misc/mytest3.pdf
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