41 lines
1.3 KiB
TypeScript
41 lines
1.3 KiB
TypeScript
import fs from 'node:fs';
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import path from 'node:path';
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import sharp from 'sharp';
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const root = path.join(process.cwd(), 'public','assets', 'daily');
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// 获取 root 目录下的所有图片，然后把图片的大小调整小一点，在 500k-1M 之间，放回原名。
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const zipPicture = async (root: string) => {
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const files = fs.readdirSync(root);
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for (const file of files) {
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const filePath = path.join(root, file);
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const stat = fs.statSync(filePath);
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if (stat.isFile() && /\.(jpg|jpeg|png)$/i.test(file)) {
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let buffer = fs.readFileSync(filePath);
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let size = buffer.length;
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if (size > 1024 * 1024) { // 超过1M才压缩
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let quality = 80;
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let compressedBuffer;
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do {
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compressedBuffer = await sharp(buffer)
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.jpeg({ quality })
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.toBuffer();
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size = compressedBuffer.length;
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quality -= 10;
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} while (size > 1024 * 1024 && quality > 30);
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if (size < 500 * 1024) {
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// 如果压缩后小于500k，适当提高质量
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quality += 5;
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compressedBuffer = await sharp(buffer)
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.jpeg({ quality })
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.toBuffer();
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}
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fs.writeFileSync(filePath, compressedBuffer);
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console.log(`${file} 压缩后大小: ${(compressedBuffer.length / 1024).toFixed(2)} KB`);
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}
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}
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}
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};
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zipPicture(root); |