The psm_utils functionality can also be accessed through a Streamlit () web application (Figure ). This allows any researcher to interconvert between any supported file formats, regardless of programming skills. Next to the interconversion of PSM file formats, PSM files can be uploaded to retrieve basic PSM statistics, such as the total number of identified spectra at a preset false discovery rate (FDR) threshold. Moreover, several diagnostic target-decoy plots are automatically generated, allowing users to easily assess the quality of the FDR estimation.