# remarker v1.15.0

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> [Remark][remark] cli

[remark][remark] is a simple, in-browser, markdown-driven slideshow tool.
`remarker` is a command line tool for building a remark-based slideshow page
very easily.

# Usage

Install via npm:

```console
$ npm install --save remarker
```

Write your slide in markdown:

```md
# My Slide

---

# My Slide 2

???

Presenter notes here

---
```

save the above as `slides.md`

Invoke `remarker` command.

```console
$ ./node_modules/.bin/remarker
```

Or if you have `npx` command, then hit:

```console
$ npx remarker
```

This starts a local server at port 6275 (this is configurable) and you can see
your slides at [http://localhost:6275/](http://localhost:6275/).

See remark's [slide](https://remarkjs.com/) and
[documentation](https://github.com/gnab/remark#remark) for more details about
its syntax, features etc.

## Build slides

You can build your slides as static page as `remarker build` command.

```console
$ ./node_modules/.bin/remarker build
```

This builds your slides as html page under `build/` directory. The output
directory is configurable. See the below for details.

## Installing globally

You can instead install it globally, in one of these two ways:

```bash
sudo npm i -g remarker    # from the npm repository
sudo npm i -g .           # if there's a clone in the current directory
```

After that, you should be able to invoke it this way from any directory in your
system:

```bash
remarker [build]
```

# Configuration

You can configure remarker with the configuration file `remarker.yml`:

(Note: remarker.yml should be put in the current directory.)

Default settings are as follows:

```yml
port: 6275
dest: build
out: index.html
source: slides.md
title: ''
assets: ['assets']
css: ''
cssFiles: []
script: ''
scriptFiles: []
remarkConfig: {}
remarkPath: moduleDir + '/vendor/remark.js'
scriptFilesAfterCreate: []
livereload: true
livereloadPort: 35729
```

## Basic options

- `port` is the port number of remarker server. Default is `6275`.
- `dest` is the destination of `remarker build` command. Default is `build`
- `out` is the filename of the result html page. Default is `index.html`
- `source` is the source markdown filename. Default is `slides.md`.
- `title` is the page title of the slides. Default is an empty string.
- `css` is css text you want to add to slides' html page.
- `cssFiles` is the list of additional stylesheet files (URL or the file path
  relative to your current working director) you want to add to slides' html
  page. If you provide file paths, these files are copied/served statically.
  Default is an empty array.

## Advanced options

- `assets` is the list of assets directory. These directories are copied/served
  statically.
- `scriptFiles` is the list of additional JavaScript files (URL or the file path
  relative to your current working director) appended after the remark.js. If
  you provide file paths, these files are copied/served statically. Default is
  an empty array.
- `script` is additional JavaScript code appended after the remark.js and
  `scriptFiles`. Default is an empty string.
- `remarkConfig` is the config object which is passed to remark.create(options).
  Default is an empty object.
  - See
    [the remark source code](https://github.com/gnab/remark/blob/develop/src/remark/models/slideshow.js#L41-L48)
    for what option is available.
- `remarkPath` is the path to remark.js. This replaces the original remark.js
  with specified one.
- `scriptFilesAfterCreate` is the list of additional JavaScript files (URL or
  the file path relative to your current working director) appended after the
  `remark.create()`. If you provide file paths, these files are copied/served
  statically. Default is an empty array.
- `livereload` is the flag to toggle livereloading feature. Default is true.
- `livereloadPort` is the port number for livereloading websocket connection.
  Default is 35729.

## CLI Usage

<!--
  Notes: This help message is stored in //assets/help-message.txt
  Please try keep these in sync.
-->

```
Usage:
  remarker [options] serve      Serves all the assets at localhost
  remarker [options] build      Builds all the assets to the dest

Options:
  -h, --help                    Shows the help message and exits
  -v, --version                 Shows the version number and exits
  -s, --source <path>           Specifies the slide's markdown file.
                                This overrides 'source' property of the config file.
  -o, --out <filename>          The output filename of the slides. Default is index.html.
  -d, --dest <path>             The destination directory for built slides.
  -p, --port <number>           The port number for dev server.
  -b, --open-browser            Open the browser to the page when server starts. Default is false.
```

# Examples

- [simple example](https://github.com/kt3k/remarker/tree/master/examples/simple)
- [remark slides](https://github.com/kt3k/remarker/tree/master/examples/remark)
  - The original `remark` slides in `remarker` configuration.
- [LaTeX and Mathjax](https://github.com/kt3k/remarker/tree/master/examples/latex-mathjax)
  - Usage of LaTeX and Mathjax in remarker. Contributed by @michaelliebling.

# Motivation of `remarker`

`remark` is a great presentation tool and you can write your slide's contents in
markdown. The problem is when you simply use remark, you need to maintain the
html, css and scripts as well as markdown. If you care the details of design and
style of the slides, that's fine. However if you don't care the design of the
slides that much and want to focus only on the contents, then the settings of
css, html, scripts seem quite messy. `remarker` solves this problem. `remarker`
separates the contents (= markdown) from the settings (css, html, scripts). So
you can only focus on and keep maintaining the contents of the slides and let
`remarker` do the rest of the work. This is easier than using `remark` directly.

# How-tos

## How to use images in slides

Put the images under `./assets` directory and they are automatically
served/copied and you can reference it like
`<img src="assets/my-diagram.png" width="600" />` in your slides.

The directory name of `assets` can be configured in `remarker.yml`. See the
configuration section for details.

# Who uses this tool?

See [this search](https://github.com/search?q=filename%3Aremarker.yml).

# History

- 2022-11-24 v1.15.0 Added loading indicator.
- 2022-02-13 v1.14.0 Fixed error while changing slides.md
- 2020-05-11 v1.12.0 Added scriptFilesAfterCreate option.
- 2019-10-18 v1.11.1 Fix dependency.
- 2019-10-18 v1.11.0 Added `-b, --open-browser` option.
- 2019-05-14 v1.10.0 Added `--dest`, `--out`, and `--port` CLI options.
- 2018-08-06 v1.9.0 Added :emoji: transformation. Modify `cssFiles` option
  handling (#11).
- 2018-06-10 v1.8.1 Fixed help and version options.
- 2018-06-10 v1.8.0 Added livereloading feature.
- 2018-01-29 v1.7.0 Enabled file asset (#8).
- 2018-01-13 v1.6.1 Fixed -s option.
- 2018-01-12 v1.6.0 Added --source cli option.
- 2017-08-05 v1.3.0 Added remarkConfig prop.

# License

MIT

[remark]: https://github.com/gnab/remark