biblatex.cfg

%Configure biblatex to fit ISO-690 UTBM's takes
%Expect biblatex style to be authortitle as iso-authoryear force italic for title
\DefineBibliographyStrings{french}{% Define words to prefix url and urldate
  urlseen = {consulté le},
  urlfrom = {disponible sur},
}

\DefineBibliographyStrings{english}{% Define words to prefix url and urldate
urlseen = {last seen on},
urlfrom = {accessible on},
}

\DeclareFieldFormat{urldate}{\mkbibparens{\bibstring{urlseen}\space#1}}% Add round brackets instead of square brackets for the consulted date and add urlseen as prefix

\DeclareFieldFormat{url}{\bibstring{urlfrom}\addcolon\space\url{#1}}% Format the URL to be prefixed by urlfrom

\DeclareFieldFormat[online]{titleaddon}{\text{In : }\textit{#1}} % Italicize titleaddon (aka website name) and add "In :" prefix

\DeclareFieldFormat{title}{#1}%Remvoe italic title

\renewbibmacro*{url+urldate}{% configure the urldate to be displayed after url fix
  \printfield{url}%
  \newunit\newblock
  \printfield{urldate}%
}