Generation of Blocked Fractional Factorial Designs (Two-Level and Three-Level) R package blockedFF version 0.1.0 Provides computational tools to generate efficient blocked and unblocked fractional factorial designs for two-level and three-level factors using the generalized Minimum Aberration (MA) criterion and related optimization algorithms. Methodological foundations include the general theory of minimum aberration as described by Cheng and Tang (2005) <doi:10.1214/009053604000001228>, and the catalogue of three-level regular fractional factorial designs developed by Xu (2005) <doi:10.1007/s00184-005-0408-x>. The main functions dol2() and dol3() generate blocked two-level and three-level fractional factorial designs, respectively, using beam search, optimization-based ranking, confounding assessment, and structured output suitable for complete factorial situations. Software Sukanta Dash <sukanta.iasri@gmail.com> Comprehensive R Archive Network (CRAN) Sunil Kumar Yadav [aut], Sukanta Dash [aut, cre], Anil Kumar [aut] GPL-3 2025-12-04 application/tgz https://CRAN.R-project.org/package=blockedFF doi:10.32614/CRAN.package.blockedFF