[[analysis-tokenizers]]
== Tokenizers

Tokenizers are used to break a string down into a stream of terms
or tokens. A simple tokenizer might split the string up into terms 
wherever it encounters whitespace or punctuation.

Elasticsearch has a number of built in tokenizers which can be
used to build <<analysis-custom-analyzer,custom analyzers>>.

include::tokenizers/standard-tokenizer.asciidoc[]

include::tokenizers/edgengram-tokenizer.asciidoc[]

include::tokenizers/keyword-tokenizer.asciidoc[]

include::tokenizers/letter-tokenizer.asciidoc[]

include::tokenizers/lowercase-tokenizer.asciidoc[]

include::tokenizers/ngram-tokenizer.asciidoc[]

include::tokenizers/whitespace-tokenizer.asciidoc[]

include::tokenizers/pattern-tokenizer.asciidoc[]

include::tokenizers/uaxurlemail-tokenizer.asciidoc[]

include::tokenizers/pathhierarchy-tokenizer.asciidoc[]