Try it with Siegfried!
                        
                            To allow you to test your new file format signatures,
                            
                                Siegfried
                            
                            and its signature editing utility Roy have been
                            compiled into this web page. Load new signatures and test
                            them against your own data before submitting them to The
                            National Archives, UK.
                        
                        
                            Siegfried implements PRONOM signatures just as DROID does.
                            Testing your signatures here is a good indicator they will
                            work as anticipated when you are ready to share them with
                            the PRONOM team.
                        
                        
                            
                                WebAssembly (WASM)
                            
                            is a technology that enables you to run low-level
                            code in the safety of your own browser, protecting your computer and
                            your data. Richard Lehane talks more about the WASM implementation
                            of Siegfried on
                            
                                his blog on LinkedIn
                            .
                        
                        
                            Roy's WebAssembly will generate a signature file as it would given an
                            equivalent instruction on the command line:
                        
./roy build --noreports -extend /path/to/your/signature/file.xml
                        
                        
                            Tip!
                                open a new tab in your browser and keep the "Try it out!" tab in this utility
                                open so that you don't have to reload your test signatures unless you
                                want to.