github-slugger vs remark-slug
Markdown Slug Generators Comparison
1 Year
github-sluggerremark-slug
What's Markdown Slug Generators?

Markdown slug generators are libraries that create unique URL-friendly slugs from headings in Markdown content. These slugs are typically used for linking to specific sections within a document, enhancing navigation and SEO. Both 'github-slugger' and 'remark-slug' serve the purpose of generating slugs, but they cater to different use cases and environments, making them suitable for various Markdown processing workflows.

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github-slugger5,802,31037715.9 kB0-ISC
remark-slug2,510,13690528 B09 months ago-
Feature Comparison: github-slugger vs remark-slug

Slug Generation Method

  • github-slugger:

    Generates slugs by transforming headings into URL-friendly strings using a simple algorithm that replaces spaces with hyphens and converts characters to lowercase. It ensures that slugs are unique by appending a number if duplicates are found, making it reliable for linking.

  • remark-slug:

    Integrates with the 'remark' Markdown processor to generate slugs directly during the parsing of Markdown content. It allows for more complex transformations and can work alongside other 'remark' plugins, providing a more customizable approach to slug generation.

Customization Options

  • github-slugger:

    Offers limited customization options; primarily focuses on generating slugs that are consistent with GitHub's format. It does not support extensive configuration, making it straightforward but less flexible for unique requirements.

  • remark-slug:

    Provides more customization options through the 'remark' ecosystem. You can modify the slug generation process by using additional plugins or custom functions, allowing for tailored slug formats based on specific project needs.

Integration

  • github-slugger:

    Standalone library that can be easily integrated into any JavaScript project without dependencies on other libraries. It is lightweight and can be used in various environments, including Node.js and the browser.

  • remark-slug:

    Designed specifically for use with the 'remark' Markdown processor, making it ideal for projects that already utilize 'remark' for Markdown parsing. It benefits from seamless integration with other 'remark' plugins, enhancing overall functionality.

Usage Scenario

  • github-slugger:

    Best suited for applications that require simple slug generation from headings, such as documentation sites or blogs where GitHub-style links are preferred. It is particularly useful in static site generators that leverage Markdown.

  • remark-slug:

    Ideal for complex Markdown processing workflows where slugs need to be generated as part of a larger transformation pipeline. It is beneficial for projects that need to manipulate Markdown content extensively before rendering.

Performance

  • github-slugger:

    Lightweight and efficient, with minimal performance overhead. It performs slug generation quickly, making it suitable for applications with high-frequency slug generation needs.

  • remark-slug:

    Performance may vary depending on the complexity of the 'remark' processing pipeline. While it is generally efficient, the overall performance will depend on the number of plugins and transformations applied during Markdown processing.

How to Choose: github-slugger vs remark-slug
  • github-slugger:

    Choose 'github-slugger' if you need a simple and straightforward slug generation tool that mimics GitHub's slug creation. It is ideal for projects where you want to maintain consistency with GitHub-style slugs and require minimal configuration.

  • remark-slug:

    Choose 'remark-slug' if you are using the 'remark' ecosystem for processing Markdown and need a more integrated solution. It is suitable for projects that involve transforming Markdown content and require additional plugins for enhanced functionality.

README for github-slugger

github-slugger

npm Build

Generate a slug just like GitHub does for markdown headings. It also ensures slugs are unique in the same way GitHub does it. The overall goal of this package is to emulate the way GitHub handles generating markdown heading anchors as close as possible.

This project is not a markdown or HTML parser: passing alpha *bravo* charlie or alpha <em>bravo</em> charlie doesn’t work. Instead pass the plain text value of the heading: alpha bravo charlie.

Install

npm install github-slugger

Usage

import GithubSlugger from 'github-slugger'

const slugger = new GithubSlugger()

slugger.slug('foo')
// returns 'foo'

slugger.slug('foo')
// returns 'foo-1'

slugger.slug('bar')
// returns 'bar'

slugger.slug('foo')
// returns 'foo-2'

slugger.slug('Привет non-latin 你好')
// returns 'привет-non-latin-你好'

slugger.slug('😄 emoji')
// returns '-emoji'

slugger.reset()

slugger.slug('foo')
// returns 'foo'

Check test/fixtures.json for more examples.

If you need, you can also use the underlying implementation which does not keep track of the previously slugged strings (not recommended):

import GithubSlugger, {slug} from 'github-slugger'

slug('foo bar baz')
// returns 'foo-bar-baz'

slug('foo bar baz')
// returns the same slug 'foo-bar-baz' because it does not keep track

Contributing

Contributions welcome! Please read the contributing guidelines first.

License

ISC