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Merged
Classic298 merged 2 commits into from
Dec 30, 2025
Merged

Dev #937

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md header splitting
Classic298 Dec 30, 2025
5a6b025
Merge branch 'open-webui:dev' into dev
Classic298 Dec 30, 2025
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18 changes: 16 additions & 2 deletions docs/getting-started/env-configuration.mdx
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Expand Up @@ -2528,11 +2528,25 @@ Provide a clear and direct response to the user's query, including inline citati
- Options:
- `character`
- `token`
- `markdown_header`
- Default: `character`
- Description: Sets the text splitter for RAG models.
- Description: Sets the text splitter for RAG models. Use `character` for RecursiveCharacterTextSplitter or `token` for TokenTextSplitter (Tiktoken-based).
- Persistence: This environment variable is a `PersistentConfig` variable.

#### `ENABLE_MARKDOWN_HEADER_TEXT_SPLITTER`

- Type: `bool`
- Default: `True`
- Description: Enables markdown header text splitting as a preprocessing step before character or token splitting. When enabled, documents are first split by markdown headers (h1-h6), then the resulting chunks are further processed by the configured text splitter (`RAG_TEXT_SPLITTER`). This helps preserve document structure and context across chunks.
- Persistence: This environment variable is a `PersistentConfig` variable.

:::info

**Migration from `markdown_header` TEXT_SPLITTER**

The `markdown_header` option has been removed from `RAG_TEXT_SPLITTER`. Markdown header splitting is now a preprocessing step controlled by `ENABLE_MARKDOWN_HEADER_TEXT_SPLITTER`. If you were using `RAG_TEXT_SPLITTER=markdown_header`, switch to `character` or `token` and ensure `ENABLE_MARKDOWN_HEADER_TEXT_SPLITTER` is enabled (it is enabled by default).

:::

#### `TIKTOKEN_CACHE_DIR`

- Type: `str`
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