tree: b9d687c6448e638964b49b88764e08a8102af109 [path history] [tgz]
  1. .github/
  2. conf/
  3. docker/
  4. ivy/
  5. lib/
  6. src/
  7. .gitignore
  8. build.xml
  9. CHANGES.txt
  11. eclipse-codeformat.xml
  12. KEYS
  13. LICENSE.txt
  14. NOTICE.txt

Apache Nutch README

NOTE: Apache Nutch 2.x development line has been retired. As of March 9th, 2019 Nutch 2.4 is the last release of the Nutch 2.x line. Nutch users should skip to using the Nutch 1.X ‘master’ codebase as this is under active development, use and maintenance by the Nutch PMC, Committership, and Community. Thank you to everyone that contributed to Nutch 2.x over the years.

For the latest information about Nutch, please visit our website at:

and our wiki, at:

To get started using Nutch read Tutorial:


To contribute a patch, follow these instructions (note that installing Hub is not strictly required, but is recommended).

0. Download and install
1. File JIRA issue for your fix at
- you will get issue id NUTCH-xxx where xxx is the issue ID.
2. git clone 
3. cd nutch
4. git checkout -b NUTCH-xxx
5. edit files (please try and include a test case if possible)
6. git status (make sure it shows what files you expected to edit)
7. Make sure that your code complies with the Nutch codeformatting template at, which is basially two space indents
8. git add <files>
9. git commit -m “fix for NUTCH-xxx contributed by <your username>”
10. git fork
11. git push -u <your git username> NUTCH-xxx
12. git pull-request

Export Control

This distribution includes cryptographic software. The country in which you currently reside may have restrictions on the import, possession, use, and/or re-export to another country, of encryption software. BEFORE using any encryption software, please check your country's laws, regulations and policies concerning the import, possession, or use, and re-export of encryption software, to see if this is permitted. See for more information.

The U.S. Government Department of Commerce, Bureau of Industry and Security (BIS), has classified this software as Export Commodity Control Number (ECCN) 5D002.C.1, which includes information security software using or performing cryptographic functions with asymmetric algorithms. The form and manner of this Apache Software Foundation distribution makes it eligible for export under the License Exception ENC Technology Software Unrestricted (TSU) exception (see the BIS Export Administration Regulations, Section 740.13) for both object code and source code.

The following provides more details on the included cryptographic software:

Apache Nutch uses the PDFBox API in its parse-tika plugin for extracting textual content and metadata from encrypted PDF files. See for more details on PDFBox.