Files
bayarea/scripts/optimize-images.mjs
2026-03-25 20:07:27 -05:00

62 lines
1.6 KiB
JavaScript

import fs from 'node:fs/promises';
import path from 'node:path';
import sharp from 'sharp';
const roots = ['public', path.join('src', 'assets')];
async function walk(dir) {
const entries = await fs.readdir(dir, { withFileTypes: true });
const files = await Promise.all(
entries.map(async (entry) => {
const fullPath = path.join(dir, entry.name);
if (entry.isDirectory()) {
return walk(fullPath);
}
return fullPath;
}),
);
return files.flat();
}
function pickWidth(filePath) {
const normalized = filePath.replace(/\\/g, '/');
if (normalized.includes('/images/blog/')) return 1280;
if (normalized.endsWith('/hero-bg.png')) return 1600;
if (normalized.endsWith('/process-illustration.png')) return 1600;
if (normalized.includes('/assets/services/')) return 1200;
return 1280;
}
async function optimize(filePath) {
const targetPath = filePath.replace(/\.png$/i, '.webp');
const width = pickWidth(filePath);
const image = sharp(filePath, { animated: false }).rotate();
const metadata = await image.metadata();
const pipeline =
metadata.width && metadata.width > width ? image.resize({ width, withoutEnlargement: true }) : image;
await pipeline.webp({ quality: 76, effort: 6 }).toFile(targetPath);
}
const pngFiles = (
await Promise.all(
roots.map(async (root) => {
try {
return await walk(root);
} catch {
return [];
}
}),
)
)
.flat()
.filter((filePath) => filePath.toLowerCase().endsWith('.png'));
await Promise.all(pngFiles.map((filePath) => optimize(filePath)));
console.log(`Optimized ${pngFiles.length} PNG files to WebP.`);