PMC Open Access Subset

Not all articles in PMC are available for text mining and other reuse, many have copyright protection, however articles in the PMC Open Access Subset are made available for download under a Creative Commons or similar license that generally allows more liberal redistribution and reuse than a traditional copyrighted work.

  • The AWS RODA, PMC OAI service, the PMC FTP service and BioC API are the only services that may be used for automated downloading of PMC content. Systematic retrieval (or bulk downloading) of articles through any other automated process is prohibited.
  • License terms vary. Please refer to the license statement in each article for specific terms of use.
  • Users of this dataset are directly and solely responsible for compliance with copyright restrictions and are expected to adhere to the terms and conditions defined by the copyright holder (see the PMC Copyright Notice).

Open Access (OA) Subset article downloads make the full text (XML, PDF, and .txt), images and supplementary materials available.

Within the OA Subset, there is:

  • A Commercial Use Collection that includes only OA Subset articles that have a machine-readable “CC-BY” or “CC0” license.
  • A Non-Commercial Use Collection that includes only OA subset articles in which reuse is restricted to non-commercial applications by the license or the license terms are not available in a machine-readable Creative Commons format.

To access the complete OA Subset, you should download both of these Collections. Details about the files and directory structure are available on the FTP Service page and the PMC Article Datasets on AWS page.

Find all Open Access Subset articles in:

Learn about additional search filters that restrict results to certain license types.


The PMC OA Subset articles are available for download via the AWS RODA, FTP service, PMC OAI-PMH and BioC API.

Support Center

Last updated: Wed, 7 Jul 2021