pdfmaker

Docker service of pdfmake - with pdf merge feature by use of pdf-merger-js.

API

There are two API endpoints:

• [POST] /pdf/file requires a JSON object
• [POST] /pdf/files requires an array of JSON objects

For documentation to the JSON objects which are describe the content of the PDFs, look here at the pdfmake documentation.

Fonts

Beside the default fonts: Times, Helvetica, Courier, Symbol the follow list of fonts is installed too:

• Roboto
• JosefinSans
• Lato
• OpenSans
• Poppins
• Merriweather

Image URLs

Also fallback URLs are supported. These urls can either be given per image or global on the object. Example:

{
  "content": [
    {
      "image": "https://example.com/img/logo.png",
      "fallback": "https://example.com/img/logo-placeholder.png"
    }
  ],
  "fallbackImage": "https://example.com/img/placeholder.png"
}

Note: Only PNGs and JPGs are supported. Note: When the download of an image + fallback fails the service will fallback to 1x1 purple png

SVG URLs

Downloading SVGs from urls is supported. It is nearly the same as Image URLs expect that it is also possible to give the SVG as string. Example:

{
  "content": [
    {
      "svg": "https://example.com/img/logo.svg"
    },
    {
      "svg": "<svg width=\"300\" height=\"200\" viewBox=\"0 0 300 200\"><text x=\"0\" y=\"50\">Example Image</text></svg>"
    }
  ]
}

Note: Fallbacks are not supported. Note: When the download of an SVG fails, the service will fallback to 1x1 purple png

Page numbers

To add a page number on at the footer of each page, you can use this property. This property accepts an element for pdfmake.

Note: this property will override the footer property!

Example:

{
  "pageNumber": {
    "text": "Page $currentPage$ of $pageCount$ pages",
    "alignment": "center"
  }
}

In all strings found in the element all $currentPage$ and $pageCount$ occurrences will be replaced.

Merging PDFS

To merge multiple PDFs, an array of pdfmake json-objects have to be used as an input.

[
  {
    "content": 
    [
        {"text": "Thats the content of the first page."}
    ]
  },
  {
    "content": 
    [
      {
        "text": "Thats the content of the second page."
      }
    ]
  }
]

Note: When merging multiple pdfs with each having separate pageNumber options. Each pdf will determine its page count independently.