MangaRock Image Decoder

Decode images from MangaRock's proprietary format

MangaRock has a nice API to work with, but obscures images by encoding them as bitwise xor'd .webp images. This codebase is a web microservice that decodes images into their native .webp format for easy consumption outside of MangaRock.

This library was built for use in poketo.

Usage

npm install manga-rock-image-decoder

This package exports a single function, decode which accepts a .mri image buffer and returns a converted buffer.

const decode = require('manga-rock-image-decoder');

const webpImageBuffer = decode(mriImageBuffer);

The converted buffer is a .webp image. You can save this as-is, or use an image conversion tool (eg. sharp), to convert the .webp image to .jpg, .png or other formats.

Microservice

This package is also available as a microservice deployed to https://mri-image-decoder.now.sh. To use the microservice, pass the image's URL to the ?url query parameter.

https://mri-image-decoder.now.sh?url=https://f01.mrcdn.info/file/mrfiles/i/6/n/l/T3.3BZTN7p5.mri

This will return the image with the correct content type set, so you can simply load or use it like any other image URL:

<img src="https://mri-image-decoder.now.sh?url=https://f01.mrcdn.info/file/mrfiles/i/6/n/l/T3.3BZTN7p5.mri" />

Credits

Thanks to this reddit answer and the Tachiyomi codebase for their implementations, which helped me write this module.

License

MIT