[PDF] PDFMiner: Extracting Text from a PDF File





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PDFMiner: Extracting Text from a PDF File

PDFMiner

Python PDF parser and analyzer

PDFMiner

What's It?

Features

Download

Where to Ask

How to Install

For CJK languages

Command Line Tools

pdf2txt.py

Examples

dumppdf.py

Examples

For the full documentation on PDFMiner, see http://unixuser.org/~euske/python/pdfminer/index.html

What's It?

PDFMiner is a tool for extracting information from PDF documents. Unlike other PDF-related tools, it focuses entirely on getting and analyzing text data.

PDFMiner allows one to obtain the exact location of text in a page, as well as other information such as fonts or lines. It includes a PDF converter that can

transform PDF files into other text formats (such as HTML). It has an extensible PDF parser that can be used for other purposes than text analysis.

Features

Written entirely in Python. (for version 2.4 or newer)

Parse, analyze, and convert PDF documents.

PDF-1.7 specification support. (well, almost)

CJK languages and vertical writing scripts support. Various font types (Type1, TrueType, Type3, and CID) support.

Basic encryption (RC4) support.

PDF to HTML conversion (with a sample converter web app).

Outline (TOC) extraction.

Tagged contents extraction.

Reconstruct the original layout by grouping text chunks. PDFMiner is about 20 times slower than other C/C++-based counterparts such as XPdf.

Online Demo: (pdf -> html conversion webapp)

http://pdf2html.tabesugi.net:8080/

Download

Source distribution:

http://pypi.python.org/pypi/pdfminer/ github: https://github.com/euske/pdfminer/

Where to Ask

Questions and comments:

How to Install

Install 2.4 or newer. ()PythonPython 3 is not supported.

Download the .PDFMiner source

Unpack it.

Run to install:setup.py

# python setup.py install 4. 5. 6.

Do the following test:

$ pdf2txt.py samples/simple1.pdf Hello World Hello World

H e l l o

W o r l d

H e l l o

W o r l d

Done!

For CJK languages

In order to process CJK languages, you need an additional step to take during installation: # make cmap python tools/conv_cmap.py pdfminer/cmap Adobe-CNS1 cmaprsrc/cid2code_Adobe_CNS1.txt cp950 big5 reading 'cmaprsrc/cid2code_Adobe_CNS1.txt'... writing 'CNS1_H.py'... (this may take several minutes) # python setup.py install

On Windows machines which don't have command, paste the following commands on a command line prompt:make

python tools\conv_cmap.py pdfminer\cmap Adobe-CNS1 cmaprsrc\cid2code_Adobe_CNS1.txt cp950 big5 python tools\conv_cmap.py pdfminer\cmap Adobe-GB1 cmaprsrc\cid2code_Adobe_GB1.txt cp936 gb2312 python tools\conv_cmap.py pdfminer\cmap Adobe-Japan1 cmaprsrc\cid2code_Adobe_Japan1.txt cp932 euc- jp python tools\conv_cmap.py pdfminer\cmap Adobe-Korea1 cmaprsrc\cid2code_Adobe_Korea1.txt cp949 euc- kr python setup.py install

Command Line Tools

PDFMiner comes with two handy tools: and .pdf2txt.pydumppdf.py pdf2txt.py

pdf2txt.py extracts text contents from a PDF file. It extracts all the text that are to be rendered programmatically, i.e. text represented as ASCII or

Unicode strings. It cannot recognize text drawn as images that would require optical character recognition. It also extracts the corresponding locations, font

names, font sizes, writing direction (horizontal or vertical) for each text portion. You need to provide a password for protected PDF documents when its

access is restricted. You cannot extract any text from a PDF document which does not have extraction permission.

Note: Not all characters in a PDF can be safely converted to Unicode.

Examples

$ pdf2txt.py -o output.html samples/naacl06-shinyama.pdf (extract text as an HTML file whose filename is output.html) $ pdf2txt.py -V -c euc-jp -o output.html samples/jo.pdf (extract a Japanese HTML file in vertical writing, CMap is required) $ pdf2txt.py -P mypassword -o output.txt secret.pdf (extract a text from an encrypted PDF file) dumppdf.py

dumppdf.py dumps the internal contents of a PDF file in pseudo-XML format. This program is primarily for debugging purposes, but it's also possible to

extract some meaningful contents (such as images).

Examples

$ dumppdf.py -a foo.pdf (dump all the headers and contents, except stream objects) $ dumppdf.py -T foo.pdf (dump the table of contents) $ dumppdf.py -r -i6 foo.pdf > pic.jpeg (extract a JPEG image)quotesdbs_dbs21.pdfusesText_27
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