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It is often used to chunk data to be tokenized and embedded into vector databases.
For examples, see <a class="" href="/components-embedding-models#use-embedding-model-components-in-a-flow">Use embedding model components in a flow</a> and <a class="" href="/chat-with-rag">Create a Vector RAG chatbot</a>.</p>
<p><img decoding="async" loading="lazy" alt="An embedding generation flow that uses a Split Text component to chunk data." src="/assets/images/component-split-text-fec2b1abb28e0852c8a172bbeb164b2c.png" width="4000" height="2766" class="img_ev3q"></p>
<p>The component accepts <code>Message</code>, <code>JSON</code>, or <code>Table</code>, and then outputs either <strong>Chunks</strong> or <strong>DataFrame</strong>.
The <strong>Chunks</strong> output returns a list of <a class="" href="/data-types#json"><code>JSON</code></a> objects containing individual text chunks.
The <strong>DataFrame</strong> output returns the list of chunks as a structured <a class="" href="/data-types#table"><code>Table</code></a> with additional <code>text</code> and <code>metadata</code> columns.</p>
<h2 class="anchor anchorTargetStickyNavbar_Vzrq" id="split-text-parameters">Split Text parameters<a href="#split-text-parameters" class="hash-link" aria-label="Direct link to Split Text parameters" title="Direct link to Split Text parameters" translate="no">​</a></h2>
<p>The <strong>Split Text</strong> component&#x27;s parameters control how the text is split into chunks, specifically the <code>chunk_size</code>, <code>chunk_overlap</code>, and <code>separator</code> parameters.</p>
<p>To test the chunking behavior, add a <strong>Text Input</strong> or <strong>Read File</strong> component with some sample data to chunk, click <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-play lf-inline-icon" aria-hidden="true" focusable="false" role="presentation"><polygon points="6 3 20 12 6 21 6 3"></polygon></svg> <strong>Run component</strong> on the <strong>Split Text</strong> component, and then click <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="lucide lucide-text-search lf-inline-icon" aria-hidden="true" focusable="false" role="presentation"><path d="M21 6H3"></path><path d="M10 12H3"></path><path d="M10 18H3"></path><circle cx="17" cy="15" r="3"></circle><path d="m21 19-1.9-1.9"></path></svg> <strong>Inspect output</strong> to view the list of chunks and their metadata. The <strong>text</strong> column contains the actual text chunks created from your chunking settings.
If the chunks aren&#x27;t split as you expect, adjust the parameters, rerun the component, and then inspect the new output.</p>
<p>Some parameters are hidden by default in the visual editor.
You can modify all component parameters through the <a class="" href="/concepts-components#component-inspection-panel">component inspection panel</a> that appears when you select a component.</p>
<table><thead><tr><th>Name</th><th>Display Name</th><th>Info</th></tr></thead><tbody><tr><td>data_inputs</td><td>Input</td><td>Input parameter. The data to split. Input must be in <code>Message</code>, <code>JSON</code>, or <code>Table</code> format.</td></tr><tr><td>chunk_overlap</td><td>Chunk Overlap</td><td>Input parameter. The number of characters to overlap between chunks. This helps maintain context across chunks. When a separator is encountered, the overlap is applied at the point of the separator so that the subsequent chunk contains the last <em>n</em> characters of the preceding chunk. Default: <code>200</code>.</td></tr><tr><td>chunk_size</td><td>Chunk Size</td><td>Input parameter. The target length for each chunk after splitting. The data is first split by separator, and then chunks smaller than the <code>chunk_size</code> are merged up to this limit. However, if the initial separator split produces any chunks larger than the <code>chunk_size</code>, those chunks are neither further subdivided nor combined with any smaller chunks; these chunks will be output as-is even though they exceed the <code>chunk_size</code>. Default: <code>1000</code>. See <a href="#chunk-size" class="">Tokenization errors due to chunk size</a> for important considerations.</td></tr><tr><td>separator</td><td>Separator</td><td>Input parameter. A string defining a character to split on, such as <code>\n</code> to split on new line characters, <code>\n\n</code> to split at paragraph breaks, or <code>},</code> to split at the end of JSON objects. You can directly provide the separator string, or pass a separator string from another component as <code>Message</code> input.</td></tr><tr><td>text_key</td><td>Text Key</td><td>Input parameter. The key to use for the text column that is extracted from the input and then split. Default: <code>text</code>.</td></tr><tr><td>keep_separator</td><td>Keep Separator</td><td>Input parameter. Select how to handle separators in output chunks. If <code>False</code>, separators are omitted from output chunks. Options include <code>False</code> (remove separators), <code>True</code> (keep separators in chunks without preference for placement), <code>Start</code> (place separators at the beginning of chunks), or <code>End</code> (place separators at the end of chunks). Default: <code>False</code>.</td></tr></tbody></table>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id="chunk-size">Tokenization errors due to chunk size<a href="#chunk-size" class="hash-link" aria-label="Direct link to Tokenization errors due to chunk size" title="Direct link to Tokenization errors due to chunk size" translate="no">​</a></h3>
<p>When using <strong>Split Text</strong> with embedding models (especially NVIDIA models like <code>nvidia/nv-embed-v1</code>), you may need to use smaller chunk sizes (<code>500</code> or less) even though the model supports larger token limits.
The <strong>Split Text</strong> component doesn&#x27;t always enforce the exact chunk size you set, and individual chunks may exceed your specified limit.
If you encounter tokenization errors, modify your text splitting strategy by reducing the chunk size, changing the overlap length, or using a more common separator.
Then, test your configuration by running the flow and inspecting the component&#x27;s output.</p>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id="other-text-splitters">Other text splitters<a href="#other-text-splitters" class="hash-link" aria-label="Direct link to Other text splitters" title="Direct link to Other text splitters" translate="no">​</a></h3>
<p>See <a class="" href="/bundles-langchain#text-splitters">LangChain text splitter components</a>.</p></div></article><nav class="docusaurus-mt-lg pagination-nav" aria-label="Docs pages"><a class="pagination-nav__link pagination-nav__link--prev" href="/parser"><div class="pagination-nav__sublabel">Previous</div><div class="pagination-nav__label">Parser</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/type-convert"><div class="pagination-nav__sublabel">Next</div><div class="pagination-nav__label">Type Convert</div></a></nav></div></div><div class="col col--3"><div class="tableOfContents_bqdL thin-scrollbar theme-doc-toc-desktop"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#split-text-parameters" class="table-of-contents__link toc-highlight">Split Text parameters</a><ul><li><a href="#chunk-size" class="table-of-contents__link toc-highlight">Tokenization errors due to chunk size</a></li><li><a href="#other-text-splitters" class="table-of-contents__link toc-highlight">Other text splitters</a></li></ul></li></ul></div></div></div></div></main></div></div></div><footer class="theme-layout-footer footer"><div class="container container-fluid"><div class="row footer__links"><div class="theme-layout-footer-column col footer__col"><div class="footer__title"></div><ul class="footer__items clean-list"><li class="footer__item"><div class="footer-links">
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