update image shrink routine to use mozjpeg

This commit is contained in:
Nycki 2024-12-26 18:26:04 -08:00
parent f92e91f261
commit 1f5dd5023a
3 changed files with 497 additions and 23 deletions

467
package-lock.json generated
View file

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"resolved": "https://registry.npmjs.org/shebang-command/-/shebang-command-2.0.0.tgz", "resolved": "https://registry.npmjs.org/shebang-command/-/shebang-command-2.0.0.tgz",
@ -2402,6 +2851,15 @@
"url": "https://github.com/sponsors/isaacs" "url": "https://github.com/sponsors/isaacs"
} }
}, },
"node_modules/simple-swizzle": {
"version": "0.2.2",
"resolved": "https://registry.npmjs.org/simple-swizzle/-/simple-swizzle-0.2.2.tgz",
"integrity": "sha512-JA//kQgZtbuY83m+xT+tXJkmJncGMTFT+C+g2h2R9uxkYIrE2yy9sgmcLhCnw57/WSD+Eh3J97FPEDFnbXnDUg==",
"license": "MIT",
"dependencies": {
"is-arrayish": "^0.3.1"
}
},
"node_modules/slash": { "node_modules/slash": {
"version": "1.0.0", "version": "1.0.0",
"resolved": "https://registry.npmjs.org/slash/-/slash-1.0.0.tgz", "resolved": "https://registry.npmjs.org/slash/-/slash-1.0.0.tgz",
@ -2617,6 +3075,13 @@
"node": ">=18" "node": ">=18"
} }
}, },
"node_modules/tslib": {
"version": "2.8.1",
"resolved": "https://registry.npmjs.org/tslib/-/tslib-2.8.1.tgz",
"integrity": "sha512-oJFu94HQb+KVduSUQL7wnpmqnfmLsOA/nAh6b6EH0wCEoK0/mPeXU6c3wKDV83MkOuHPRHtSXKKU99IBazS/2w==",
"license": "0BSD",
"optional": true
},
"node_modules/uc.micro": { "node_modules/uc.micro": {
"version": "2.1.0", "version": "2.1.0",
"resolved": "https://registry.npmjs.org/uc.micro/-/uc.micro-2.1.0.tgz", "resolved": "https://registry.npmjs.org/uc.micro/-/uc.micro-2.1.0.tgz",

View file

@ -40,6 +40,7 @@
"cross-env": "^7.0.3", "cross-env": "^7.0.3",
"jsdom": "^25.0.1", "jsdom": "^25.0.1",
"luxon": "^3.3.0", "luxon": "^3.3.0",
"markdown-it-anchor": "^8.6.7" "markdown-it-anchor": "^8.6.7",
"sharp": "^0.33.5"
} }
} }

View file

@ -1,28 +1,36 @@
// winget install ImageMagick.Q8 import fs from 'node:fs/promises';
const { exec } = require('node:child_process'); import path from 'node:path';
const { readdir } = require('node:fs/promises'); import sharp from 'sharp';
const path = require('node:path');
const dirIn = 'tools/in';
const dirOut = 'tools/out';
const thresholdBytes = 2 * 1024 * 1024;
const quality = [100, 87, 75, 62, 50, 37, 25, 12];
async function main() { async function main() {
const dirIn = 'tools/in'; for (const base of await fs.readdir(dirIn)) {
const dirOut = 'tools/out';
for (const base of await readdir(dirIn)) {
if (base === '.gitkeep') continue; if (base === '.gitkeep') continue;
const fileIn = `${dirIn}/${base}`; const fileIn = `${dirIn}/${base}`;
const file = path.parse(fileIn); const { name } = path.parse(fileIn);
const fileOut = `${dirOut}/${file.name}.webp`; const { size } = await fs.stat(fileIn);
if (size <= thresholdBytes) {
// TODO: what if the input image is already a lossless webp? const fileOut = `${dirOut}/${base}`;
const lossless = file.ext === '.png'; console.log(`${fileIn} -> ${fileOut} (no changes)`);
fs.copyFile(fileIn, fileOut);
const command = [ continue;
`magick "${fileIn}"`, }
`-define webp:lossless=${lossless}`, const fileOut = `${dirOut}/${name}.jpg`;
`-define webp:target-size=200kb`, for (let i = 0; i < quality.length; i += 1) {
`"${fileOut}"`, const newStats = await (sharp(fileIn)
].join(' '); .withMetadata()
console.log(command); .jpeg({ mozjpeg: true, quality: quality[i] })
exec(command, (_err, stdout, stderr) => console.log(stdout + stderr)); .toFile(fileOut)
);
if (i == quality.length || newStats.size <= thresholdBytes) {
console.log(`${fileIn} -> ${fileOut} (quality: ${quality[i]})`);
break;
}
}
} }
} }