The following is borrowed from Herbert in biblatex: Make title hyperlink to doi url (if available)
We use doi=false and url=false at load time to suppress DOIs and URLs, but that wont cut it for @online entries, so if we want to get rid of the URL there, we also need
\renewbibmacro*{url+urldate}{}
Then we use Herbert's macro to typeset the title with the link (DOI is preferred to URL)
\newbibmacro{string+doiurl}[1]{%
\iffieldundef{doi}{%
\iffieldundef{url}{%
#1%
}{%
\href{\thefield{url}}{#1}%
}%
}{%
\href{http://dx.doi.org/\thefield{doi}}{#1}%
}%
}
The format is applied to the title field
\DeclareFieldFormat{title}{\usebibmacro{string+doiurl}{\mkbibemph{#1}}}
\DeclareFieldFormat[article,incollection]{title}{\usebibmacro{string+doiurl}{\mkbibquote{#1}}}
To get bibliography back to normal, we then issue
\AtBeginBibliography{
\DeclareFieldFormat{title}{\mkbibemph{#1}}
\DeclareFieldFormat[article,incollection]{title}{\mkbibquote{#1}}
\settoggle{bbx:url}{true}
\settoggle{bbx:doi}{true}
\renewbibmacro*{url+urldate}{%
\usebibmacro{url}%
\iffieldundef{urlyear}
{}
{\setunit*{\addspace}%
\usebibmacro{urldate}}}
}
To toggle on URLs and DOIs (and revert the old url macro) and return to the old title formatting without hyperlinks.
MWE
\documentclass{article}
\usepackage[style=authoryear,doi=false,url=false]{biblatex}
\usepackage[colorlinks]{hyperref}
\renewbibmacro*{url+urldate}{}
\newbibmacro{string+doiurl}[1]{%
\iffieldundef{doi}{%
\iffieldundef{url}{%
#1%
}{%
\href{\thefield{url}}{#1}%
}%
}{%
\href{http://dx.doi.org/\thefield{doi}}{#1}%
}%
}
\DeclareFieldFormat{title}{\usebibmacro{string+doiurl}{\mkbibemph{#1}}}
\DeclareFieldFormat[article,incollection]{title}{\usebibmacro{string+doiurl}{\mkbibquote{#1}}}
\AtBeginBibliography{
\DeclareFieldFormat{title}{\mkbibemph{#1}}
\DeclareFieldFormat[article,incollection]{title}{\mkbibquote{#1}}
\settoggle{bbx:url}{true}
\settoggle{bbx:doi}{true}
\renewbibmacro*{url+urldate}{%
\usebibmacro{url}%
\iffieldundef{urlyear}
{}
{\setunit*{\addspace}%
\usebibmacro{urldate}}}
}
\addbibresource{biblatex-examples.bib}
\begin{document}
Lorem\footfullcite{sigfridsson} ipsum\footfullcite{markey} dolor sit\footfullcite{cicero} amet.
\printbibliography
\end{document}

\AtBeginBibliographyblock. – moewe Sep 09 '14 at 17:37