SIGNATURE EXTRACTION API

Name	Description
api-key (header)	API key which you will receive with your subscription here
file (form-data)	Document file from which to extract signatures. To be sent in the body as form-data with the key 'file'. Supported formats include PDF, PNG and JPG. For multi-page documents, all pages will be analyzed.

The results of the signature extraction are returned in JSON format. The response contains a list of signatures found in the document, along with their details.

Field Name	Description
page	The page number where the signature was found in the document. This is useful for multi-page documents, as it allows you to locate the exact page of the signature. Page number starts from 1.
boundingBox	The bounding box of the signature in the document. The bounding box is in format [left, top, right, bottom]. These are normalized values ranging from 0 to 1. This information is useful for highlighting or cropping the signature area in the document.
image	The base64 encoded image of the signature. This can be used to display the signature directly in applications without needing to save it as a separate file.
binary	The base64 encoded binary data of the signature. This can be used for further processing or storage of the signature image.
confidence	The confidence score of the signature detection, ranging from 0 to 1. A higher score indicates a higher confidence in the accuracy of the detected signature. This can be useful for filtering out low-confidence detections.
signatureColor	The average color of the signature in RGB format [R, G, B].
numberOfSignaturesExpected	The number of signatures expected in the document. Returns -1 if the number is unknown or not specified. For example, if there are two signature fields in the document, two signatures are expected. If only one signature is found, this mismatch can be highlighted in your application.
hasVisibleBoxSurrounding	Boolean indicating if the signature is enclosed in a visible box or frame.
hasSignatureLabelsNearby	Boolean indicating if there are labels such as "Sign here" or "Signature" near the detected signature.
fileHash	MD5 hash of the processed file. Useful for verifying file integrity.
version	Version of the signature extraction engine used.
numberOfPages	Total number of pages in the processed document.

An example result can look like this:

                                        
                                        {
                                            "signatures": [
                                                {
                                                    "image": "iVBO...",
                                                    "binary": "iVBORw...",
                                                    "boundingBox": [
                                                        0.5438988095238095,
                                                        0.7347883597883598,
                                                        0.6438492063492064,
                                                        0.8167989417989417
                                                    ],
                                                    "page": 1,
                                                    "confidence": 0.95,
                                                    "signatureColor": [
                                                        23,
                                                        13,
                                                        8
                                                    ],
                                                    "numberOfSignaturesExpected": 2,
                                                    "hasVisibleBoxSurrounding": false,
                                                    "hasSignatureLabelsNearby": false
                                                }
                                            ],
                                            "fileHash": "4a2cc869047bbda0ec8b7e0579a5ef79",
                                            "version": "2.08.29",
                                            "numberOfPages": 1
                                        }