All tools
PDF utility

JSON to PDF API
for template-based documents

Load a saved HTML template with [[var:invoice-template-html]], load saved CSS with [[var:invoice-template-css]], then send JSON data into it and get finished PDFs back without maintaining your own rendering service.

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[[var:...]] JSON data PDF output
Endpoint POST
/api/utilities/json-to-pdf 
POST /api/utilities/json-to-pdf
Authorization: Bearer ns_live_...

// Direct HTML
{
  "html": "<h1>Invoice #[[invoice.number]]</h1><p>Customer: [[customer.name]]</p>",
  "css": "h1 { color: #08785c; }",
  "data": {
    "invoice": { "number": "INV-1001" },
    "customer": { "name": "Acme Inc" }
  }
}

// Saved variables
{
  "html": "[[var:invoice-template-html]]",
  "css": "[[var:invoice-template-css]]",
  "data": {
    "invoice": { "number": "INV-1001" },
    "customer": { "name": "Acme Inc" }
  }
}
What it handles

Built for utility work inside real automations.

Each tool follows the same platform contract: bearer auth, JSON requests, predictable responses, action usage tracking, and operational visibility.

Saved templates

Use [[var:invoice-template-html]] to reuse one HTML template across customers, jobs, and workflows.

Saved CSS

Use [[var:invoice-template-css]] to keep the PDF styling consistent.

JSON variables

Inject JSON values with [[variable]] syntax inside the template.

Operational output

Receive file URLs, metadata, usage tracking, and predictable API responses.

Response JSON 
{
  "success": true,
  "data": {
    "download_url": "https://app.nisastack.com/files/download/...",
    "signed_url": "https://files.nisastack.com/...",
    "size_bytes": 98211,
    "page_count": 1
  }
}
Common uses

Where teams usually put it to work.

Invoices
Receipts
Payslips
Client reports
Start free

Test this tool before wiring it into a production workflow.

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