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  <section id="presearch-engine">
<span id="engine-presearch"></span><h1>Presearch Engine<a class="headerlink" href="#presearch-engine" title="Link to this heading">¶</a></h1>
<nav class="contents local" id="contents">
<ul class="simple">
<li><p><a class="reference internal" href="#search-type-video" id="id1">Search type <code class="docutils literal notranslate"><span class="pre">video</span></code></a></p></li>
<li><p><a class="reference internal" href="#languages-regions" id="id2">Languages &amp; Regions</a></p></li>
<li><p><a class="reference internal" href="#implementations" id="id3">Implementations</a></p></li>
</ul>
</nav>
<p id="module-searx.engines.presearch">Presearch supports the search types listed in <a class="reference internal" href="#searx.engines.presearch.search_type" title="searx.engines.presearch.search_type"><code class="xref py py-obj docutils literal notranslate"><span class="pre">search_type</span></code></a> (general,
images, videos, news).</p>
<p>Configured <code class="docutils literal notranslate"><span class="pre">presarch</span></code> engines:</p>
<div class="highlight-yaml notranslate"><div class="highlight"><pre><span></span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">presearch</span>
<span class="w">  </span><span class="nt">engine</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">presearch</span>
<span class="w">  </span><span class="nt">search_type</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">search</span>
<span class="w">  </span><span class="nt">categories</span><span class="p">:</span><span class="w"> </span><span class="p p-Indicator">[</span><span class="nv">general</span><span class="p p-Indicator">,</span><span class="w"> </span><span class="nv">web</span><span class="p p-Indicator">]</span>

<span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">presearch images</span>
<span class="w">  </span><span class="l l-Scalar l-Scalar-Plain">...</span>
<span class="w">  </span><span class="nt">search_type</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">images</span>
<span class="w">  </span><span class="nt">categories</span><span class="p">:</span><span class="w"> </span><span class="p p-Indicator">[</span><span class="nv">images</span><span class="p p-Indicator">,</span><span class="w"> </span><span class="nv">web</span><span class="p p-Indicator">]</span>

<span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">presearch videos</span>
<span class="w">  </span><span class="l l-Scalar l-Scalar-Plain">...</span>
<span class="w">  </span><span class="nt">search_type</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">videos</span>
<span class="w">  </span><span class="nt">categories</span><span class="p">:</span><span class="w"> </span><span class="p p-Indicator">[</span><span class="nv">general</span><span class="p p-Indicator">,</span><span class="w"> </span><span class="nv">web</span><span class="p p-Indicator">]</span>

<span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">presearch news</span>
<span class="w">  </span><span class="l l-Scalar l-Scalar-Plain">...</span>
<span class="w">  </span><span class="nt">search_type</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">news</span>
<span class="w">  </span><span class="nt">categories</span><span class="p">:</span><span class="w"> </span><span class="p p-Indicator">[</span><span class="nv">news</span><span class="p p-Indicator">,</span><span class="w"> </span><span class="nv">web</span><span class="p p-Indicator">]</span>
</pre></div>
</div>
<div class="admonition hint">
<p class="admonition-title">Hint</p>
<p>By default Presearch’s video category is intentionally placed into:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">categories</span><span class="p">:</span> <span class="p">[</span><span class="n">general</span><span class="p">,</span> <span class="n">web</span><span class="p">]</span>
</pre></div>
</div>
</div>
<section id="search-type-video">
<h2><a class="toc-backref" href="#id1" role="doc-backlink">Search type <code class="docutils literal notranslate"><span class="pre">video</span></code></a><a class="headerlink" href="#search-type-video" title="Link to this heading">¶</a></h2>
<p>The results in the video category are most often links to pages that contain a
video, for instance many links from Preasearch’s video category link content
from facebook (aka Meta) or Twitter (aka X).  Since these are not real links to
video streams SearXNG can’t use the video template for this and if SearXNG can’t
use this template, then the user doesn’t want to see these hits in the videos
category.</p>
</section>
<section id="languages-regions">
<h2><a class="toc-backref" href="#id2" role="doc-backlink">Languages &amp; Regions</a><a class="headerlink" href="#languages-regions" title="Link to this heading">¶</a></h2>
<p>In Presearch there are languages for the UI and regions for narrowing down the
search.  If we set “auto” for the region in the WEB-UI of Presearch and cookie
<code class="docutils literal notranslate"><span class="pre">use_local_search_results=false</span></code>, then the defaults are set for both (the
language and the region) from the <code class="docutils literal notranslate"><span class="pre">Accept-Language</span></code> header.</p>
<p>Since the region is already “auto” by default, we only need to set the
<code class="docutils literal notranslate"><span class="pre">use_local_search_results</span></code> cookie and send the <code class="docutils literal notranslate"><span class="pre">Accept-Language</span></code> header.  We
have to set these values in both requests we send to Presearch; in the first
request to get the request-ID from Presearch and in the final request to get the
result list (see <code class="docutils literal notranslate"><span class="pre">send_accept_language_header</span></code>).</p>
<p>The time format returned by Presearch varies depending on the language set.
Multiple different formats can be supported by using <code class="docutils literal notranslate"><span class="pre">dateutil</span></code> parser, but
it doesn’t support formats such as “N time ago”, “vor N time” (German),
“Hace N time” (Spanish). Because of this, the dates are simply joined together
with the rest of other metadata.</p>
</section>
<section id="implementations">
<h2><a class="toc-backref" href="#id3" role="doc-backlink">Implementations</a><a class="headerlink" href="#implementations" title="Link to this heading">¶</a></h2>
</section>
<dl class="py data">
<dt class="sig sig-object py" id="searx.engines.presearch.search_type">
<span class="sig-prename descclassname"><span class="pre">searx.engines.presearch.</span></span><span class="sig-name descname"><span class="pre">search_type</span></span><em class="property"><span class="w"> </span><span class="p"><span class="pre">=</span></span><span class="w"> </span><span class="pre">'search'</span></em><a class="headerlink" href="#searx.engines.presearch.search_type" title="Link to this definition">¶</a></dt>
<dd><p>must be any of <code class="docutils literal notranslate"><span class="pre">search</span></code>, <code class="docutils literal notranslate"><span class="pre">images</span></code>, <code class="docutils literal notranslate"><span class="pre">videos</span></code>, <code class="docutils literal notranslate"><span class="pre">news</span></code></p>
</dd></dl>

</section>


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<li class="toctree-l1"><a class="reference internal" href="../../../user/index.html">User information</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../../extended_types.html">Extended Types</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../enginelib.html">Engine Library</a></li>
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<li class="toctree-l5"><a class="reference internal" href="piped.html">Piped</a></li>
<li class="toctree-l5 current"><a class="current reference internal" href="#">Presearch Engine</a></li>
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