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@hilosiva/vite-plugin-image-optimizer

v0.3.0

Published

画像アセットを最適化する Vite 用プラグイン。

Downloads

283

Readme

vite-plugin-image-optimizer

ビルド時に sharp を使って画像を最適化・変換する Vite プラグイン。

動作環境

  • Node.js: 20.19.0 以上(22.12.0 以上推奨)
  • Vite: 6.x または 7.x

特徴

  • JPG / PNG / GIF / WebP / AVIF を圧縮
  • JPG・PNG から WebP・AVIF を自動生成
  • build.assetsInlineLimit: 0 と組み合わせるとすべての画像に適用できる

インストール

# pnpm
pnpm add @hilosiva/vite-plugin-image-optimizer -D

# npm
npm i @hilosiva/vite-plugin-image-optimizer -D

# yarn
yarn add @hilosiva/vite-plugin-image-optimizer -D

使い方

import { defineConfig } from "vite";
import { viteImageOptimizer } from "@hilosiva/vite-plugin-image-optimizer";

export default defineConfig({
  plugins: [
    viteImageOptimizer({
      generate: {
        preserveExt: true,
      },
    }),
  ],
  build: {
    assetsInlineLimit: 0, // base64 インライン化を無効にすると全画像が対象になる
  },
});

注意 public/ フォルダ内の静的アセットは対象外です。 また build.assetsInlineLimit のデフォルト(4KB)以下の画像はインライン化されるため対象外になります。インライン化を無効にする場合は assetsInlineLimit: 0 を設定してください。

オプション

supportedExts

  • タイプ: string[]
  • デフォルト: [".jpg", ".jpeg", ".png", ".gif", ".webp", ".avif"]

最適化対象の拡張子。

generate.inputExts

  • タイプ: string[]
  • デフォルト: [".jpg", ".jpeg", ".png"]

WebP・AVIF を生成する変換元フォーマット。

generate.outputExts

  • タイプ: string[]
  • デフォルト: [".webp", ".avif"]

生成する変換先フォーマット。

generate.preserveExt

  • タイプ: boolean
  • デフォルト: false

true にすると元の拡張子をファイル名に残します。

false: logo.png → logo.webp
true:  logo.png → logo.png.webp

jpg / jpeg / png / gif / webp / avif

各フォーマットの圧縮オプション。sharp のオプションをそのまま渡せます。

設定例

viteImageOptimizer({
  generate: {
    preserveExt: true,
  },
  jpg: { quality: 70, mozjpeg: true },
  jpeg: { quality: 70, mozjpeg: true },
  png: { quality: 70 },
  webp: { quality: 75 },
  avif: { quality: 70 },
});

ライセンス

MIT