Is there a web service that receives a reference and returns the impact factor? Is there a web service that I can send a bibtex entry and receive an impact factor?

e.g. 

http://magicalsite.com/query.php?json={MY_BIBTEX}


returns:

{
'IF':37.65
}




So I figured it out...

I use http://www.impactfactorsearch.com which is proposed in this answer.

Here's a quick and easy PHP script to get the impact factor of any journal:

&lt;?php
$name        = "Applied Ocean Research"; //change to suit your needs
$journalName = urlencode($name);

$cmd      = "curl -s 'http://www.impactfactorsearch.com/test.php?json=true&amp;input=$journalName'";
$result   = `$cmd`;
$ifObject = json_decode($result);

$levDistances = array();
if (isset($ifObject-&gt;results)) {
    if (is_array($ifObject-&gt;results) &amp;&amp; (sizeof($ifObject-&gt;results) &gt; 0)) {
        foreach ($ifObject-&gt;results as $journal) {
            $levDistances[$journal-&gt;value] = array(
                'score' =&gt; similar_text($journal-&gt;value, $journalName),
                'if' =&gt; $journal-&gt;id
            );
        }
        arsort($levDistances);
        $keys         = array_keys($levDistances);
        $impactFactor = doubleval($levDistances[$keys[0]]['if']);
        echo "journal: " . $name . "\n";
        echo "if: " . $impactFactor . "\n";
    }
}
?&gt;
I recommend you to search the publisher of the impact factor's website which indexes the journals or even the journal's websites themselves in which their IF is written. However, if I want to answer your question; I found one website which may help you the way you want to search for impact factors.

I searched over the net and only found Impact Factor Search website in which you have to enter the journal's full title (seems simpler than uploading the bibtex information) and by clicking on the provided link, a search list will appear to you. You then have to choose the name of the journal you want to get information about and in the output's window you will have the following information:

JOURNAL NAME:

ABBREVIATION:

IMPACT FACTOR 2013:


The website currently prints the most up-to-date IF, for the year 2013, and is ready to support IF for the year 2014 too as the latest data become available .