https://github.com/m4k15y6666fk/auto-thumbnail

https://github.com/m4k15y6666fk/auto-thumbnail

Last synced: 20 days ago
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• Host: GitHub
• URL: https://github.com/m4k15y6666fk/auto-thumbnail
• Owner: m4k15y6666fk
• License: mit
• Created: 2024-06-02T18:56:57.000Z (7 months ago)
• Default Branch: main
• Last Pushed: 2024-06-02T20:01:21.000Z (7 months ago)
• Last Synced: 2024-06-02T21:41:40.924Z (7 months ago)
• Language: JavaScript
• Size: 5.86 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE.txt

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README

        
# auto-thumbnail

**rectangle image -> square image**

**長方形の画像 -> 正方形の画像**

## Summary / 概要

Auto thumbnail (squared thumbnail) image generator with entropy.

エントロピーによってサムネイル画像（正方形）を生成するスクリプト

## Usage / 使い方

### Install

```bash

# install all sources into "auto-thumbnail" directory in your current path

git clone "https://github.com/m4k15y6666fk/auto-thumbnail.git"

```

### Use in your JavaScript

```js

// import the module

import { toThumbnail } from "./auto-thumbnail/index.js";

// convert image file (File Object) to thumbnail (File Object)

// File - https://developer.mozilla.org/en-US/docs/Web/API/File

const thumbnail = await toThumbnail(

    file, // File Object - https://developer.mozilla.org/en-US/docs/Web/API/File

    {

        outputSize: 512, // thumbnail size (width & height)

        inputSize: 256, // [CAUTION] This value is only using when computing entropy.

        type: 'image/jpeg', // MIME type of output thumbnail 

        quality: 0.8 // compression level of thumbnail (range: 0.0 - 1.0)

    }

);

/* Other Methods for adovanced operation */

import { file2imagedata, transpose } from "./auto-thumbnail/index.js";

// convert image file (File Object) into ImageData

// ImageData Object - https://developer.mozilla.org/en-US/docs/Web/API/ImageData

const pixels = await file2imagedata(

    file, // File

    {

        size: -1

        // minimum side of output (width OR height)

        // "-1" is meaning of input size and output size is equivalant.

    }

);

// transpose imageData

const transposed_imagedata = transpose(

    pixels // imageData

)

```

## Donate / ご支援

### OFUSE

[https://ofuse.me/m4k15y6666fk](https://ofuse.me/m4k15y6666fk)