Extract Text

Extract text from files to make them searchable and machine readable.

This module has the following features:

• The module adds an "extracted text" property where it sets extracted text to media and items.
• When adding a media, the module will automatically extract text from the file and set the text to the media.
• When adding or editing an item, the module will automatically aggregate the media text (in order) and set the text to the item.
• When editing an item or batch editing items, the user can choose to refresh or clear the extracted text.
• When editing a media, the user can choose to refresh or clear the extracted text.
• On the module configuration page, the user can:
  • See which extractors are available on their system.
  • Disable individual extractors.
  • Set individual extractors to only run in the background.

Extractors:

catdoc

Used to extract text from DOC and RTF files. Requires catdoc.

docx2txt

Used to extract text from DOCX files. Requires docx2txt.

domdocument

Used to extract text from XML files. No requirements.

filegetcontents

Used to extract text from TXT files. No requirements.

lynx

Used to extract text from HTML files. Requires lynx.

odt2txt

Used to extract text from ODT files. Requires odt2txt.

pdftotext

Used to extract text from PDF files. Requires pdftotext, a part of the poppler-utils package.

tesseract

Used to extract text from image files (OCR). Requires tesseract.

Supported file formats:

• DOC (application/msword)
• DOCX (application/vnd.openxmlformats-officedocument.wordprocessingml.document)
• HTML (text/html)
• ODT (application/vnd.oasis.opendocument.text)
• PDF (application/pdf)
• RTF (application/rtf)
• TXT (text/plain)
• XML (application/xml)

Images files are supported by tesseract if compiled with the required libraries:

• BMP (image/bmp)
• GIF (image/gif)
• JP2 (image/jp2)
• JPG (image/jpeg)
• PNG (image/png)
• TIFF (image/tiff)
• WEBP (image/webp)

Note that some file extensions or media types may be disallowed in your global settings.

Copyright

ExtractText is Copyright © 2019-present Corporation for Digital Scholarship, Vienna, Virginia, USA http://digitalscholar.org

The Corporation for Digital Scholarship distributes the Omeka source code under the GNU General Public License, version 3 (GPLv3). The full text of this license is given in the license file.

The Omeka name is a registered trademark of the Corporation for Digital Scholarship.

Third-party copyright in this distribution is noted where applicable.

All rights not expressly granted are reserved.