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Pdf-js Plugin

The Pdf-js Plugin is for Grav CMS. It allows you to embed PDF files into pages via shortcode.

For a demo, visit my blog.


Installing the Pdf-js plugin can be done in one of two ways. The GPM (Grav Package Manager) installation method enables you to quickly and easily install the plugin with a simple terminal command, while the manual method enables you to do so via a zip file.

GPM Installation (Preferred)

The simplest way to install this plugin is via the Grav Package Manager (GPM) through your system's terminal (also called the command line). From the root of your Grav install type:

bin/gpm install pdf-js

This will install the Pdf-js plugin into your /user/plugins directory within Grav. Its files can be found under /your/site/grav/user/plugins/pdf-js.

Manual Installation

To install this plugin, just download the zip version of this repository and unzip it under /your/site/grav/user/plugins. Then, rename the folder to pdf-js. You can find these files on GitHub or via

You should now have all the plugin files under


NOTE: This plugin is a modular component for Grav which requires Grav and the Error, Problems and Shortcode Core plugins to operate.

Admin Plugin

If you use the admin plugin, you can install directly through the admin plugin by browsing the Plugins tab and clicking on the Add button.


Before configuring this plugin, you should copy the user/plugins/pdf-js/pdf-js.yaml to user/config/plugins/pdf-js.yaml and only edit that copy.

Here is the default configuration and an explanation of available options:

Variable Default Options Note
enabled true true or false Set to false to disable this plugin completely.
width 600 Sets the Window width in pixels
height 300 Sets the Window height in pixels
technique pdfobject embed, object, pdfjs, pdfobject The technique for embedding pdf files on the page
show_used_technique false Show Used Technique (debug)

Note that if you use the admin plugin, a file with your configuration, and named pdf-js.yaml will be saved in the user/config/plugins/ folder once the configuration is saved in the admin.


This plugin uses the Shortcode Core infrastructure. Read those docs for the nitty gritty of how shortcodes work.

The Pdf-js shortcode is a self-closing [pdfjs option1="value1" option2="value2" ... /], and it accepts the following options:

  • file is the only required parameter. It points to the datafile you wish to load. By default, the plugin looks in the same folder as the page file. This is adequate for most usage. You can also load files from the user/data folder by prefixing your file name with data: (e.g., file=data:folder/filename.pdf).

  • width set the width of the window. If not evaluated, the default value is used.

  • height set the height of the window. If not evaluated, the default value is used.

    If all you're passing is the file name, then you can shorten the code to the form [pdfjs=filename.pdf/].

    FYI, slash is not essential.

Example Codes

Multiple PDF files can also be embedded on a page except for Pdf-Js.

  • [pdfjs=filename.pdf] or [pdfjs file=filename.pdf] (basic embed of pdf file in the same folder as the page itself)

  • [pdfjs file=filename.pdf width=300 height=400] (basic embed of pdf file in the same folder as the page itself, in a window of 400 pixels in width and 300 pixels in height)

  • [pdfjs=data:filename.pdf] or [pdfjs file=data:filename.pdf] (basic embed of pdf file in the user/data folder)

  • [pdfjs=data:subdir/filename.pdf] or [pdfjs file=data:subdir/filename.pdf] (basic embed of pdf file in the user/data/subdir folder)

Note: data can take any name, for example: pdfs or repository or whatever you like.

Note: if the file name contains spaces use double quotes, for example: [pdfjs="first filename.pdf"] or [pdfjs file="first filename.pdf"] or [pdfjs="data:filename.pdf"] and so on.


Pdf-js is a general-purpose, web standards-based platform for parsing and rendering PDFs of Mozilla. More informations are available here:

PDFObject is an open-source standards-friendly JavaScript utility for embedding PDF files into HTML documents.

To Do

  • Incorporate more than one pdf with Pdf-Js

  • Reduce the size of the Pdf-Js library.

  • Make the toolbar buttons available via Admin.

  • Solve this warning if possible: Warning: Setting up fake worker.


Allows you to embed PDF files into pages via shortcode.




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