"Searchable format" means that information or data can be easily found or located using a search function or by inputting keywords or terms. Full definition
We only searched for «Printed Books» (one of several searchable formats) so as to avoid double - counting books which are also available as e-books. (educationnext.org)
They are available elsewhere, but not always in the most convenient searchable format. (slaw.ca)
Access includes both current and past issues in a fully searchable format. (lancasterhouse.com)