Adobe Reader XI provides search and indexing features:
Since 2017, Adobe hasn't released fixes for new vulnerabilities discovered in this version. adobe reader xi version 11.0.23
Despite its age, version 11.0.23 includes the full suite of "XI" features that once set the standard for PDF interaction: Adobe Reader XI provides search and indexing features:
Adobe Reader XI 11.0.23 is a nostalgic and functional piece of software for those who prefer a "no-frills" PDF experience. However, for most modern users, upgrading to is recommended to ensure you have the latest security protections and better support for newer operating systems . for most modern users
Support for Adobe Reader XI followed the standard Adobe lifecycle: