Silent Printer Bridge

1. Bridge Setup

To use silent printing, you must install the Silent Printer Bridge on your Windows computer.

2. Activation (OTP Required)

After installing the application, it will ask for an Activation OTP.

Once you have the OTP, enter it in the software to activate the bridge. After activation, you can use the API as documented below.

3. Base URL

The default HTTPS base URL is: https://localhost:8080

GET 4. Retrieve Printer List

Get a list of all printers installed on the local system.

fetch('https://localhost:8080/api/printers')
    .then(response => response.json())
    .then(data => {
        if (data.success) {
            console.log('Available Printers:', data.printers);
        }
    })
    .catch(error => console.error('Connection error:', error));

Success Response:

{
    "success": true,
    "printers": ["POS-58", "Microsoft Print to PDF", "OneNote"]
}

POST 5. Print HTML Content

Send HTML content directly to a specific printer.

const printData = {
    html: `<div style="font-family: Arial; width: 100%;">
        <h2 style="text-align: center;">SHOP NAME</h2>
        <hr>
        <p>Item: Coffee ........ 1.50</p>
        <p>Item: Cake .......... 2.50</p>
        <hr>
        <h3>Total: 4.00</h3>
    </div>`,
    printerName: "POS-58",
    width: "58mm"
};

fetch('https://localhost:8080/api/print', {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify(printData)
})
.then(response => response.json())
.then(result => console.log('Print Status:', result))
.catch(error => console.error('Print Error:', error));

Parameters:

6. Testing with cURL

Use -k to ignore SSL certificate warnings:

# Get Printers
curl -k https://localhost:8080/printers

# Print HTML
curl -k -X POST https://localhost:8080/print-html \
     -H "Content-Type: application/json" \
     -d "{\"html\": \"<h1>Test</h1>\", \"printerName\": \"POS-58\"}"