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remark-embed-images

v5.0.0

Published

remark plugin to embed local images as data URIs

Downloads

26,733

Readme

remark-embed-images

Build Coverage Downloads Size Sponsors Backers Chat

remark plugin to embed local images as data URIs.

Contents

What is this?

This package is a unified (remark) plugin that inlines images as data URIs.

When should I use this?

You can use this package when you want to move markdown that references local images around more easily, because images will be inlined. This does makes the markdown quite hard to read and isn’t supported everywhere (such as GitHub), because data URIs might result in security risks.

Install

This package is ESM only. In Node.js (version 18+), install with npm:

npm install remark-embed-images

In Deno with esm.sh:

import remarkEmbedImages from 'https://esm.sh/remark-embed-images@5'

In browsers with esm.sh:

<script type="module">
  import remarkEmbedImages from 'https://esm.sh/remark-embed-images@5?bundle'
</script>

Use

Say we have an image foo.png and next to it the following file example.md:

![A pink square](./foo.png)

…and a module example.js:

import {remark} from 'remark'
import remarkEmbedImages from 'remark-embed-images'
import {read} from 'to-vfile'

const file = await read('example.md')

await remark()
  .use(remarkEmbedImages)
  .process(file)

console.log(String(file))

…then running node example.js yields:

![A pink square](data:image/png;base64,iVBORw0…)

API

This package exports no identifiers. The default export is remarkEmbedImages.

unified().use(remarkEmbedImages)

Embed local images as data URIs.

Parameters

There are no options.

Returns

Transform (Transformer).

Types

This package is fully typed with TypeScript. It exports no additional types.

Compatibility

Projects maintained by the unified collective are compatible with maintained versions of Node.js.

When we cut a new major release, we drop support for unmaintained versions of Node. This means we try to keep the current release line, remark-embed-images@5, compatible with Node.js 18.

This plugin works with unified version 6+ and remark version 7+.

Security

Always be careful with user input. For example, it’s possible to hide JavaScript inside images (such as GIFs, WebPs, and SVGs). User provided images open you up to a cross-site scripting (XSS) attack.

Related

Contribute

See contributing.md in remarkjs/.github for ways to get started. See support.md for ways to get help.

This project has a code of conduct. By interacting with this repository, organization, or community you agree to abide by its terms.

License

MIT © David Herges