# Signature Field API

| **Signature field**                                                        |
| -------------------------------------------------------------------------- |
| *\<field type=”einksign” name=”string” placeholder=”string” roleId=”id”/>* |

Field value size limited up to 10kb. Field value - base64 encoded png image, size up to 300x300.

#### Signature Field attributes

* **type** — define if this field is einksign type, mandatory attribute.
* **name** — string, length from 1 up to 128 symbols, restricted symbols &, “, <, >, field name used to fill in on envelope, unique for document, mandatory attribute.
* **placeholder** — field placeholder displayable on template and envelope, length from 0 up to 1024 symbols, if empty on envelope will be displayed field name, optional attribute.
* **roleId** — id of the role who should fill field on envelope, mandatory attribute.


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