Document Classifier

Use Document Classifier endpoint (see below) to automatically sort / detect the class of the document based on keywords-based rules. For example, you can define rules to find which vendor provided the document to find which template to apply accordingly.

Auto classification Of Incoming Documents

Note

To quickly create and test classification rules, download and install ByteScout PDF Multitool. Run it and check PDF Classifier at the left sidebar. Test rules and export them as a JSON request for PDF.co PDF Classifier.

Available Methods

• /pdf/classifier

/pdf/classifier

Document Classifier can automatically find class of input PDF, JPG, PNG document by analyzing its content using the built-in AI or custom defined classification rules.

The best way to develop, test and maintain classification rules is to use Classifier Tester Tool from PDF.co Document Classifier UI . Use this tool to quickly edit and test rules on single PDFs and on folders.

• Method: POST

• Endpoint: /v1/pdf/classifier

Attributes

Note

Attributes are case-sensitive and should be inside JSON for POST request, for example:

{
    "url": "https://example.com/file1.pdf"
}

Attribute	Description	Required
url	URL to the source file. 1	yes
httpusername	HTTP auth user name if required to access source url.	no
httppassword	HTTP auth password if required to access source url.	no
rulescsv	Define custom classification rules in CSV format. Rules are in CSV format where each row contains: class name, logic (AND or OR (default)), and keywords separated by a comma. Each row is separated by the \n symbol. You can use regular expressions for keywords with this syntax: /keyword or regexp/i where i is the case-insensitive flag. Please note that all \ symbols should add the prefix \ because of JSON format, so \d becomes \\d and so on. Custom Rules Example 1 for rulescsv (for more examples please check the classifier guide) Amazon AWS, OR, Amazon Web Services Invoice, Amazon CloudFront\nDigital Ocean, OR,DigitalOcean, DOInvoice\nACME,OR, ACME Inc.,1540 Long Street Custom Rules Example 2 (with regular expressions, for more examples please check the classifier guide) Medical Report,AND,/Instructing Party|Medical Report|Date Of Injury|Med Agency Ref/i\r\nInjured Claimant,OR, Injured Claimant, Injured Patient ID	no
rulescsvurl	Instead of inline CSV you can use this parameter and set the URL to a CSV file with classification rules. This is useful if you have a separate developer working on CSV rules.	no
caseSensitive	Defines if keywords in rules are case-sensitive or not. (default true).	no
inline	Set to true to return results inside the response. Otherwise, the endpoint will return a link to the output file generated. Note: only applies if async mode is true.	no
password	Password of PDF file, the input must be in string format.	no
async	Set async to true for long processes to run in the background, API will then return a jobId which you can use with the Background Job Check endpoint to check the status of the process and retrieve the output while you can proceed with other tasks.	no
name	File name for the generated output, the input must be in string format.	no
expiration	Set the expiration time for the output link in minutes (default is 60 i.e 60 minutes or 1 hour), After this specified duration, any generated output file(s) will be automatically deleted from PDF.co Temporary Files Storage. The maximum duration for link expiration varies based on your current subscription plan. To store permanent input files (e.g. re-usable images, pdf templates, documents) consider using PDF.co Built-In Files Storage.	no
profiles	Use this parameter to set additional configurations for fine-tuning and extra options. Explore the Profiles section for more.	no

Query parameters

No query parameters accepted.

Payload

{
    "url": "https://pdfco-test-files.s3.us-west-2.amazonaws.com/document-parser/sample-invoice.pdf",
    "async": false,
    "inline": "true",
    "password": "",
    "profiles": ""
}

Response 2

{
    "body": {
        "classes": [
            {
                "class": "invoice"
            },
            {
                "class": "finance"
            },
            {
                "class": "documents"
            }
        ]
    },
    "pageCount": 1,
    "error": false,
    "status": 200,
    "credits": 42,
    "duration": 353,
    "remainingCredits": 98019328
}

CURL

curl --location --request POST 'https://api.pdf.co/v1/pdf/classifier' \
--header 'Content-Type: application/json' \
--header 'x-api-key: ' \
--data-raw '{
    "url": "https://pdfco-test-files.s3.us-west-2.amazonaws.com/document-parser/sample-invoice.pdf",
    "async": false,
    "inline": "true",
    "password": "",
    "profiles": ""
} '

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Footnotes

1

Supports links from Google Drive, Dropbox, and PDF.co Built-In Files Storage. To upload files via the API check out the File Upload section. Note: If you experience intermittent Too Many Requests or Access Denied errors, please try to add cache: to enable built-in URL caching. (e.g cache:https://example.com/file1.pdf) For data security, you have the option to encrypt output files and decrypt input files. Learn more about user-controlled data encryption.

2

Response codes as follows:

Code	Description
200	The request has succeeded
400	Bad input parameters
401	Unauthorized
403	Not enough credits
405	Timeout error. To process large documents or files please use asynchronous mode (set the async parameter to true) and then check status using the /job/check endpoint. If a file contains many pages then specify a page range using the pages parameter. The number of pages of the document can be obtained using the /pdf/info endpoint.

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