Optical Marks Reader (Checkboxes, Radiobutton, Fillable Fields, Segments etc)
Our barcode reader engine can also find the following marks and objects on scanned documents:
- checkboxes
- radioboxes
- vertical and horizontal lines
- general segments (basically, all content types on the page).
Available Methods
[POST] /barcode/read/from/url (find checkboxes on scan image)
| Attributes |
|---|
| url required URL to the source file. Supports links from Google Drive, Dropbox and from built-in PDF.co files storage. For uploading files via API please check Files Upload section. If you are randomly getting a Too Many Requests or Access Denied error for your input URL, Please try to add cache: to enable built-in URL caching. You can also encrypt data for output files and decrypt data input files with user-controlled data encryption to learn more. |
| httpusername optional HTTP auth user name if required to access source url. |
| httppassword optional HTTP auth password if required to access source url. |
| types required Comma-separated list of object types to decode. Must be in a “string” format. Object types supported: checkboxes, radioboxes, Vertical and Horizontal lines and general segments: 1. Segment - locates and selects objects on a page (general selection)2. UnderlinedField - detects fillable fields (typically, underlined spaces, i.e. fields to fill in a form).3. Rectangle - detects rectangles, including checkboxes. Also returns value as 1 if a checkmark or a filled rectangle was detected.4. Oval - detects rounded or oval marks (typically, a radiobox). Returns value of 1 if filled out radiobox was detected.5. HorizontalLine - detects horizontal lines.6. VerticalLine - detects vertical lines.For selecting multiple types just put them together with a separate comma. |
| pages optional Comma-separated list of page indices (or ranges) to process. IMPORTANT: the very first page starts at 0 (zero). To set a range use the dash -, for example: 0,2-5,7-. To set a range from the index to the last page use range like this: 2- (from page #3 as the index starts at zero and till the end of the document). For ALL pages just leave this param empty. Example: 0,2-5,7- means the first page, then the 3rd page to the 6th page, and then the range from the 8th (index = 7) page till the end of the document. |
| async optional Runs processing asynchronously and returns JobId that you may use with /job/check to check the state of the processing (possible states: working, failed, aborted and success). Must be one of: true, or false. |
| profiles optional Use this parameter to set additional configurations for fine-tuning and extra options. Must be in a “string” format. Explore PDF.co knowledgebase for profile examples. |
- Method: POST
- URL: /v1/barcode/read/from/url
Query parameters
No query parameters accepted.
Body payload
{
"url": "https://pdfco-test-files.s3.us-west-2.amazonaws.com/pdf-to-html/sample.pdf",
"types": "Checkbox,UnderlinedField",
"async": false
}
Example responses
/barcode/read/from/url (find checkboxes on scan image)
{
"barcodes": [
{
"Value": "box",
"RawData": "",
"Type": 53,
"Rect": "{X=34,Y=264,Width=526,Height=9}",
"Page": 0,
"File": "https://pdfco-test-files.s3.us-west-2.amazonaws.com/pdf-to-html/sample.pdf",
"Confidence": 1,
"Metadata": "",
"TypeName": "UnderlinedField"
},
{
"Value": "box",
"RawData": "",
"Type": 53,
"Rect": "{X=30,Y=299,Width=534,Height=9}",
"Page": 0,
"File": "https://pdfco-test-files.s3.us-west-2.amazonaws.com/pdf-to-html/sample.pdf",
"Confidence": 1,
"Metadata": "",
"TypeName": "UnderlinedField"
},
{
"Value": "box",
"RawData": "",
"Type": 53,
"Rect": "{X=30,Y=327,Width=132,Height=9}",
"Page": 0,
"File": "https://pdfco-test-files.s3.us-west-2.amazonaws.com/pdf-to-html/sample.pdf",
"Confidence": 1,
"Metadata": "",
"TypeName": "UnderlinedField"
},
{
"Value": "box",
"RawData": "",
"Type": 53,
"Rect": "{X=298,Y=327,Width=132,Height=9}",
"Page": 0,
"File": "https://pdfco-test-files.s3.us-west-2.amazonaws.com/pdf-to-html/sample.pdf",
"Confidence": 1,
"Metadata": "",
"TypeName": "UnderlinedField"
},
{
"Value": "box",
"RawData": "",
"Type": 53,
"Rect": "{X=30,Y=352,Width=132,Height=6}",
"Page": 0,
"File": "https://pdfco-test-files.s3.us-west-2.amazonaws.com/pdf-to-html/sample.pdf",
"Confidence": 1,
"Metadata": "",
"TypeName": "UnderlinedField"
},
{
"Value": "box",
"RawData": "",
"Type": 53,
"Rect": "{X=298,Y=352,Width=132,Height=6}",
"Page": 0,
"File": "https://pdfco-test-files.s3.us-west-2.amazonaws.com/pdf-to-html/sample.pdf",
"Confidence": 1,
"Metadata": "",
"TypeName": "UnderlinedField"
},
{
"Value": "box",
"RawData": "",
"Type": 53,
"Rect": "{X=30,Y=373,Width=132,Height=5}",
"Page": 0,
"File": "https://pdfco-test-files.s3.us-west-2.amazonaws.com/pdf-to-html/sample.pdf",
"Confidence": 1,
"Metadata": "",
"TypeName": "UnderlinedField"
},
{
"Value": "box",
"RawData": "",
"Type": 53,
"Rect": "{X=298,Y=373,Width=132,Height=5}",
"Page": 0,
"File": "https://pdfco-test-files.s3.us-west-2.amazonaws.com/pdf-to-html/sample.pdf",
"Confidence": 1,
"Metadata": "",
"TypeName": "UnderlinedField"
},
{
"Value": "box",
"RawData": "",
"Type": 53,
"Rect": "{X=30,Y=394,Width=132,Height=6}",
"Page": 0,
"File": "https://pdfco-test-files.s3.us-west-2.amazonaws.com/pdf-to-html/sample.pdf",
"Confidence": 1,
"Metadata": "",
"TypeName": "UnderlinedField"
},
{
"Value": "box",
"RawData": "",
"Type": 53,
"Rect": "{X=298,Y=394,Width=132,Height=6}",
"Page": 0,
"File": "https://pdfco-test-files.s3.us-west-2.amazonaws.com/pdf-to-html/sample.pdf",
"Confidence": 1,
"Metadata": "",
"TypeName": "UnderlinedField"
},
{
"Value": "box",
"RawData": "",
"Type": 53,
"Rect": "{X=30,Y=416,Width=132,Height=6}",
"Page": 0,
"File": "https://pdfco-test-files.s3.us-west-2.amazonaws.com/pdf-to-html/sample.pdf",
"Confidence": 1,
"Metadata": "",
"TypeName": "UnderlinedField"
},
{
"Value": "box",
"RawData": "",
"Type": 53,
"Rect": "{X=298,Y=416,Width=132,Height=6}",
"Page": 0,
"File": "https://pdfco-test-files.s3.us-west-2.amazonaws.com/pdf-to-html/sample.pdf",
"Confidence": 1,
"Metadata": "",
"TypeName": "UnderlinedField"
},
{
"Value": "box",
"RawData": "",
"Type": 53,
"Rect": "{X=30,Y=433,Width=132,Height=9}",
"Page": 0,
"File": "https://pdfco-test-files.s3.us-west-2.amazonaws.com/pdf-to-html/sample.pdf",
"Confidence": 1,
"Metadata": "",
"TypeName": "UnderlinedField"
},
{
"Value": "box",
"RawData": "",
"Type": 53,
"Rect": "{X=298,Y=437,Width=132,Height=6}",
"Page": 0,
"File": "https://pdfco-test-files.s3.us-west-2.amazonaws.com/pdf-to-html/sample.pdf",
"Confidence": 1,
"Metadata": "",
"TypeName": "UnderlinedField"
}
],
"pageCount": 1,
"error": false,
"status": 200,
"duration": 860,
"remainingCredits": 98725528,
"credits": 35
}
Code Snippet
CURL
curl --location --request POST 'https://api.pdf.co/v1/barcode/read/from/url' \
--header 'x-api-key: ' \
--data-raw '{
"url": "https://pdfco-test-files.s3.us-west-2.amazonaws.com/pdf-to-html/sample.pdf",
"types": "Checkbox,UnderlinedField",
"async": false
}'