Mrthfx

Please can someone help me to reduce the spaces between words on the references. I saw many solution on internet but none worked for me.
Sorry for the bad format of the question, it is the first time I make a question.

Edited:Tried to add below MWEB.

documentclass[sigconf]{acmart}

addbibresource{jobname.bib}

usepackage{filecontents}



% I have separated file biblo.bib 

%In these two(and some other references) there are appearing spaces between words and some links are going beyond the corner

begin{filecontents}{jobname.bib}

@Manual{ref13,

    title  = {Germany energy giant RWE launches Ethereum based chargin stations},

    author = {TrustNodes}, 

    note   = {url{http://www.trustnodes.com/2017/04/29/germanys-energy-giant-launches-100s-ethereum-based-electric-cars-charging-stations}}

}



@Manual{ref27,

    title = {Venezuela is cracking down on bitcoin fever},

    author= {BusinessInsider},    

    year  = {2017},

    note  = {url{http://uk.businessinsider.com/venezuela-bitcoin-use-popularity-restrictions-and-crackdown-2017-3?r=US&IR=T}}

}

end{filecontents}



begin{document}



maketitle

input{body}

bibliographystyle{ACM-Reference-Format}

bibliography{jobname}

nocite{ref27}%

nocite{ref13}%In fact I have cited into body.txt where I have the content of the paper

end{document}

try to use

 usepackage[hyphens]{url}

It may helps in your problem

Here is a MWE without the above line:

documentclass[a4paper,10pt]{article}

usepackage[utf8]{inputenc}

%usepackage[hyphens]{url}

usepackage{filecontents}

usepackage{hyperref}



begin{filecontents}{biblo.bib}

@Manual{ref1,

  title    =     {Bitcoin: A Peer-to-Peer Electronic Cash System},

  author   = {Nakamoto Satoshi},

  year     = {2008},

  note     =     {url{https://bitcoin.org/bitcoin.pdf}},

}



@Manual{ref13,

    title  = {Germany energy giant RWE launches Ethereum based chargin stations},

    author = {TrustNodes}, 

    note   =     {url{http://www.trustnodes.com/2017/04/29/germanys-energy-giant-launches-100s-ethereum-based-electric-cars-charging-stations}}

}

end{filecontents}



%opening

title{}

author{}



begin{document}



maketitle



begin{abstract}



end{abstract}



section{test}

cite{ref1}



and



cite{ref13}





bibliographystyle{acm}

bibliography{biblo}



end{document}

and the result:

If I comment out that line, I have:

I don't know why the hyphens option of the url package clashes with your setting, but you can try the following (credit to https://tex.stackexchange.com/a/102697/105447):

documentclass[sigconf]{acmart}



usepackage{url}

makeatletter

g@addto@macro{UrlBreaks}{UrlOrds}

makeatother



usepackage{filecontents}

begin{filecontents}{jobname.bib}

@Manual{ref13,

    title  = {Germany energy giant RWE launches Ethereum based chargin stations},

    author = {TrustNodes}, 

    note   = {url{http://www.trustnodes.com/2017/04/29/germanys-energy-giant-launches-100s-ethereum-based-electric-cars-charging-stations}}

}



@Manual{ref27,

    title = {Venezuela is cracking down on bitcoin fever},

    author= {BusinessInsider},    

    year  = {2017},

    note  = {url{http://uk.businessinsider.com/venezuela-bitcoin-use-popularity-restrictions-and-crackdown-2017-3?r=US&IR=T}}

}

end{filecontents}



begin{document}





bibliographystyle{ACM-Reference-Format}

bibliography{jobname}

nocite{ref27}%

nocite{ref13}

end{document}

The result is:

I must add that someone might very well come up with a better solution.

The solution that worked for me is the following:

• add documentclass[sigconf, hyphens]{acmart} instead of documentclass[sigconf]{acmart}, since the url package is already included by template, but you can provide the hyphens parameter to the documentclass, which will be passed to the url package (not sure though how this works internally) and it should work.