> ## Documentation Index
> Fetch the complete documentation index at: https://sensible.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Classify document by type (sync)

> **Note:** Use this Classify endpoint for testing. Use the asynchronous Classify endpoint for production.

Score a document's similarity to each document type you defined in your Sensible account. Get scores for the document's similarity to document types and to their reference documents.

Use this endpoint:

 - In an extraction workflow. For example, determine which documents to extract prior to calling a Sensible extraction endpoint.
 - Outside an extraction workflow. For example, determine where to route each document or to label each document in a system of record.

To post the document bytes, specify the non-encoded document bytes as the entire request body,and specify the `Content-Type` header, for example,"application/pdf" or "image/jpeg".

For supported file size and types, see [Supported file types](https://sensible.mintlify.app/.app/senseml-reference/concepts/file-types).