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

# MrzProcessingParams Object (IMrzProcessingParams Interface)

This object provides access to parameters of the machine-readable zone (MRZ) extraction.

## Properties

<table><thead><tr><th><p><strong>Name</strong></p></th><th><p><strong>Type</strong></p></th><th><p><strong>Description</strong></p></th></tr></thead><tbody><tr><td><p><strong>Application</strong></p></td><td><p><strong><a href="/fine-reader/engine/api-reference/engine-object-iengine-interface">Engine</a></strong>, <a href="/fine-reader/engine/guided-tour/advanced-techniques/programming-aspects/working-with-properties#readonly_properties">read-only</a></p></td><td><p>Returns the <strong><a href="/fine-reader/engine/api-reference/engine-object-iengine-interface">Engine</a> </strong>object.</p></td></tr><tr><td><p><a name="format" /><strong>Format</strong></p></td><td><p><strong><a href="/fine-reader/engine/api-reference/enumerations/mrzformatenum">MrzFormatEnum</a></strong></p></td><td><p>Specifies the MRZ format by the MRZ standards.</p><p>The default value is MF\_Auto.</p></td></tr><tr><td><p><a name="minmrzlinelength" /><strong>MinMrzLineLength</strong></p></td><td><p><strong><a href="/fine-reader/engine/guided-tour/advanced-techniques/programming-aspects/working-with-properties">int</a></strong></p></td><td><p>Specifies the minimum number of characters in the MRZ line. The value can be in the range of 1 to 44. The default value is 28. If the MRZ lines are shorter than the threshold set by this property, the system will not extract a valid MRZ from such an image.</p><p>The standard MRZ line length is specified in the <a href="https://www.icao.int/publications/pages/publication.aspx?docnum=9303">ICAO Document 9303</a> and depends on the type of the document:  </p><ul><li>Type 1 is of a credit card size. The MRZ in such documents consists of 3 lines × 30 characters.  </li><li>Type 2 is relatively rare, and its MRZ contains 2 lines × 36 characters.</li><li>Type 3 is typical of passport booklets. Its MRZ is 2 lines × 44 characters.  </li></ul><p>We recommend leaving the default value of 28 characters for standard documents. It allows recognizing the MRZs from all three types of documents and has a margin of two characters in case the image is a bit cropped.</p><p>If you need to extract the MRZ with more than two symbols lost due to crop or bad image quality, try setting this property to a lower value.</p><Note>With a lower MinMrzLineLength value, it is more likely that some garbage will be recognized as MRZ.</Note></td></tr></tbody></table>

## Input parameter

This object is passed as an input parameter to the [ExtractMrz](/fine-reader/engine/api-reference/document-related-objects/frpage/extractmrz-method) method of the [FRPage](/fine-reader/engine/api-reference/document-related-objects/frpage) object.

## Output parameter

This object is the output parameter of the [CreateMrzProcessingParams](/fine-reader/engine/api-reference/engine-object-iengine-interface/creation-methods/createlessobjectgreater-methods) method of the [Engine](/fine-reader/engine/api-reference/engine-object-iengine-interface) object.

## See also

[FRPage](/fine-reader/engine/api-reference/document-related-objects/frpage)<br />[Working with Properties](/fine-reader/engine/guided-tour/advanced-techniques/programming-aspects/working-with-properties)