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<h2 class="title"><a id="analysis-lowercase-tokenizer"></a>Lowercase tokenizer<a class="edit_me" rel="nofollow" title="Edit this page on GitHub" href="https://github.com/elastic/elasticsearch/edit/8.10/docs/reference/analysis/tokenizers/lowercase-tokenizer.asciidoc">edit</a></h2>
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<p>The <code class="literal">lowercase</code> tokenizer, like the
<a class="xref" href="analysis-letter-tokenizer.html" title="Letter tokenizer"><code class="literal">letter</code> tokenizer</a> breaks text into terms
whenever it encounters a character which is not a letter, but it also
lowercases all terms. It is functionally equivalent to the
<a class="xref" href="analysis-letter-tokenizer.html" title="Letter tokenizer"><code class="literal">letter</code> tokenizer</a> combined with the
<a class="xref" href="analysis-lowercase-tokenfilter.html" title="Lowercase token filter"><code class="literal">lowercase</code> token filter</a>, but is more
efficient as it performs both steps in a single pass.</p>
<h3><a id="_example_output_12"></a>Example output<a class="edit_me" rel="nofollow" title="Edit this page on GitHub" href="https://github.com/elastic/elasticsearch/edit/8.10/docs/reference/analysis/tokenizers/lowercase-tokenizer.asciidoc">edit</a></h3>
<div class="pre_wrapper lang-ruby alternative">
<pre class="programlisting prettyprint lang-ruby alternative">response = client.indices.analyze(
body: {
tokenizer: 'lowercase',
text: "The 2 QUICK Brown-Foxes jumped over the lazy dog's bone."
}
)
puts response</pre>
</div>
<a id="a99bc141066ef673e35f306157750ec9"></a>
<div class="pre_wrapper lang-console default has-ruby">
<pre class="programlisting prettyprint lang-console default has-ruby">POST _analyze
{
"tokenizer": "lowercase",
"text": "The 2 QUICK Brown-Foxes jumped over the lazy dog's bone."
}</pre>
</div>
<div class="console_widget has-ruby" data-snippet="snippets/450.console"></div>
<p>The above sentence would produce the following terms:</p>
<div class="pre_wrapper lang-text">
<pre class="programlisting prettyprint lang-text">[ the, quick, brown, foxes, jumped, over, the, lazy, dog, s, bone ]</pre>
</div>
<h3><a id="_configuration_13"></a>Configuration<a class="edit_me" rel="nofollow" title="Edit this page on GitHub" href="https://github.com/elastic/elasticsearch/edit/8.10/docs/reference/analysis/tokenizers/lowercase-tokenizer.asciidoc">edit</a></h3>
<p>The <code class="literal">lowercase</code> tokenizer is not configurable.</p>
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