Check

Check a PDF before working on it

POST/v1/check/pdf

Reports the page count, whether the PDF has a text layer (false for scanned or blank PDFs), whether it is password protected, its size and its title and author. A password protected PDF is a normal answer with is_encrypted true, so a flow can branch. Something that is not a PDF is refused.

Updated October 27, 2026

Request body

Name	Type	Required	Description
content_base64	string	yes	The PDF as base64. File content in a flow is already base64: send it as it is

Example request

A request body that works, as JSON.

{
  "content_base64": "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"
}

Code samples

Replace YOUR_TOKEN with your access token.

curl

curl -X POST 'https://api.skillfulsardine.com/v1/check/pdf' \
  -H 'Authorization: Bearer YOUR_TOKEN' \
  -H 'Content-Type: application/json' \
  --data-raw '{
  "content_base64": "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"
}'

PowerShell

$body = @'
{
  "content_base64": "JVBERi0xLjMKJenr8b8KMSAwIG9iago8PAovQ291bnQgMQovS2lkcyBbMyAwIFJdCi9NZWRpYUJveCBbMCAwIDU5NS4yOCA4NDEuODldCi9UeXBlIC9QYWdlcwo+PgplbmRvYmoKMiAwIG9iago8PAovT3BlbkFjdGlvbiBbMyAwIFIgL0ZpdEggbnVsbF0KL1BhZ2VMYXlvdXQgL09uZUNvbHVtbgovUGFnZXMgMSAwIFIKL1R5cGUgL0NhdGFsb2cKPj4KZW5kb2JqCjMgMCBvYmoKPDwKL0NvbnRlbnRzIDQgMCBSCi9QYXJlbnQgMSAwIFIKL1Jlc291cmNlcyA2IDAgUgovVHlwZSAvUGFnZQo+PgplbmRvYmoKNCAwIG9iago8PAovRmlsdGVyIC9GbGF0ZURlY29kZQovTGVuZ3RoIDg4Cj4+CnN0cmVhbQp4nDNS8OIy0DM1VyjncgpR0HczVDA00jMwUAhJU3ANAQkZG+oZWihYGBjrWZoohKQoaHjmleVnJqcqmBgpJOalKATkp2SW5oKo5MTiEk2FkCyQRgBqWhYvCmVuZHN0cmVhbQplbmRvYmoKNSAwIG9iago8PAovQmFzZUZvbnQgL0hlbHZldGljYQovRW5jb2RpbmcgL1dpbkFuc2lFbmNvZGluZwovU3VidHlwZSAvVHlwZTEKL1R5cGUgL0ZvbnQKPj4KZW5kb2JqCjYgMCBvYmoKPDwKL0ZvbnQgPDwvRjEgNSAwIFI+PgovUHJvY1NldCBbL1BERiAvVGV4dCAvSW1hZ2VCIC9JbWFnZUMgL0ltYWdlSV0KPj4KZW5kb2JqCjcgMCBvYmoKPDwKL0NyZWF0aW9uRGF0ZSAoRDoyMDI2MTAyNTE0NDc0MVopCj4+CmVuZG9iagp4cmVmCjAgOAowMDAwMDAwMDAwIDY1NTM1IGYgCjAwMDAwMDAwMTUgMDAwMDAgbiAKMDAwMDAwMDEwMiAwMDAwMCBuIAowMDAwMDAwMjA1IDAwMDAwIG4gCjAwMDAwMDAyODUgMDAwMDAgbiAKMDAwMDAwMDQ0NCAwMDAwMCBuIAowMDAwMDAwNTQxIDAwMDAwIG4gCjAwMDAwMDA2MjggMDAwMDAgbiAKdHJhaWxlcgo8PAovU2l6ZSA4Ci9Sb290IDIgMCBSCi9JbmZvIDcgMCBSCi9JRCBbPEMxNEYzNDIzODRCMDI4MzdEQkUzNzJGQThENkI5RUI2PjxDMTRGMzQyMzg0QjAyODM3REJFMzcyRkE4RDZCOUVCNj5dCj4+CnN0YXJ0eHJlZgo2ODMKJSVFT0YK"
}
'@
$response = Invoke-RestMethod -Method Post -Uri 'https://api.skillfulsardine.com/v1/check/pdf' `
  -Headers @{ Authorization = 'Bearer YOUR_TOKEN' } `
  -ContentType 'application/json; charset=utf-8' `
  -Body ([System.Text.Encoding]::UTF8.GetBytes($body))
$response | ConvertTo-Json -Depth 10

Python

import requests

payload = {
    "content_base64": "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",
}

response = requests.post(
    "https://api.skillfulsardine.com/v1/check/pdf",
    headers={"Authorization": "Bearer YOUR_TOKEN"},
    json=payload,
    timeout=30,
)
print(response.json())

JavaScript

const response = await fetch("https://api.skillfulsardine.com/v1/check/pdf", {
  method: "POST",
  headers: {
    "Authorization": "Bearer YOUR_TOKEN",
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
  "content_base64": "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"
}),
});
const result = await response.json();
console.log(result);

Node

// Node 18 or later. Save as call.mjs and run: API_TOKEN=... node call.mjs
const token = process.env.API_TOKEN;

const response = await fetch("https://api.skillfulsardine.com/v1/check/pdf", {
  method: "POST",
  headers: {
    "Authorization": `Bearer ${token}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
  "content_base64": "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"
}),
});
const result = await response.json();
console.log(result);

Rust

// Cargo.toml: reqwest = { version = "0.12", features = ["blocking", "json"] }, serde_json = "1"
fn main() -> Result<(), Box<dyn std::error::Error>> {
    let body: serde_json::Value = serde_json::from_str(r#"{
  "content_base64": "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"
}"#)?;
    let response = reqwest::blocking::Client::new()
        .post("https://api.skillfulsardine.com/v1/check/pdf")
        .bearer_auth("YOUR_TOKEN")
        .json(&body)
        .send()?;
    println!("{}", response.text()?);
    Ok(())
}

Swift

import Foundation

var request = URLRequest(url: URL(string: "https://api.skillfulsardine.com/v1/check/pdf")!)
request.httpMethod = "POST"
request.setValue("Bearer YOUR_TOKEN", forHTTPHeaderField: "Authorization")
request.setValue("application/json", forHTTPHeaderField: "Content-Type")
request.httpBody = Data(#"""
{
  "content_base64": "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"
}
"""#.utf8)

let (data, _) = try await URLSession.shared.data(for: request)
print(String(decoding: data, as: UTF8.self))

Response

The fields inside data of a successful response.

Name	Type	Required	Description
page_count	integer	yes	Number of pages, null when the PDF is password protected
has_text_layer	boolean	yes	True when text could be read from the first pages, false for scanned or blank PDFs, null when protected
is_encrypted	boolean	yes	True when the PDF needs a password
size_bytes	integer	yes	Size of the file
title	string	yes	Title from the metadata
author	string	yes	Author from the metadata
subject	string	yes	Subject from the metadata
creator	string	yes	Program that made the document
producer	string	yes	Program that made the PDF file
created	string	yes	Creation date as written in the metadata

Example response

A real answer from the operation, as JSON. The fields in the table above are inside data.

{
  "data": {
    "page_count": 1,
    "has_text_layer": true,
    "is_encrypted": false,
    "size_bytes": 993,
    "title": null,
    "author": null,
    "subject": null,
    "creator": null,
    "producer": null,
    "created": "D:20261025144741Z"
  },
  "errors": null,
  "meta": {
    "request_id": "1c6df182-c7c2-47cd-aaf8-29c61e7eed29",
    "timestamp": "2026-10-27T07:19:42.144632Z",
    "version": "2026-03-26"
  },
  "pagination": null
}

Responses

Status	When it happens
200	Successful Response
400	The body respects the operation schema, but the use case rejected it. Each problem is one ApiError entry
413	The request is larger than the request size limit of the API allows
422	The body does not respect the operation schema. Each problem is one ApiError entry with the code validation_error
500	Something failed inside the server and was not an input problem. The same envelope, errors may be empty