AGAT has the power to check, fix, pad missing information (features/attributes) of any kind of GTF and GFF to create complete, sorted and standardised GTF/GFF formats. Over the years it has been enriched by many many tools to perform just about any tasks that is possible related to GTF/GFF format files (sanitizing, conversions, merging, modifying, filtering, FASTA sequence extraction, adding information, etc). Comparing to other methods AGAT is robust to even the most despicable GTF/GFF files.