2025/bin/optimize-images at main · commit-conf/2025 · GitHub

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#!/usr/bin/env node

const sharp = require("sharp");
const fs = require("fs");
const { optimize } = require("svgo");

function optimizeFolderImages({ sourceDir, size }) {
  const destinationDir = `${sourceDir}/optimized`;
  return new Promise((resolve, reject) => {
    fs.readdir(sourceDir, { withFileTypes: true }, function (err, files = []) {
      if (err) {
        console.log("Unable to scan directory: " + err);
        reject(err);
      }
      files.forEach((dirent) => {
        if (dirent.isFile()) {
          const file = dirent.name;
          console.log("Optimizing image " + file);
          let destinationFilename = file
            .replace("[^a-zA-Z0-9]+", "-")
            .replace(".jpeg", ".jpg")
            .replace(".png", ".jpg");
          if (file.endsWith(".svg")) {
            try {
              const data = fs.readFileSync(`${sourceDir}/${file}`, "utf8");
              const result = optimize(data, {
                path: `${destinationDir}/${destinationFilename}`,
              });
              fs.writeFileSync(
                `${destinationDir}/${destinationFilename}`,
                result.data
              );
            } catch (error) {
              console.log(error);
            }
          } else {
            let result = sharp(`${sourceDir}/${file}`)
              .resize(size, undefined, {
                withoutEnlargement: true,
              })
              .jpeg()
              .flatten({ background: { r: 255, g: 255, b: 255 } });
            result
              .clone()
              .toBuffer()
              .then((data) => {
                fs.writeFileSync(
                  `${destinationDir}/${destinationFilename}`,
                  data
                );
              })
              .catch((err) => {
                console.log(err);
              });
            result
              .clone()
              .avif({ quality: 65 })
              .toBuffer()
              .then((data) => {
                fs.writeFileSync(
                  `${destinationDir}/${destinationFilename.replace(
                    ".jpg",
                    ".avif"
                  )}`,
                  data
                );
              })
              .catch((err) => {
                console.log(err);
              });
          }
        }
      });
      resolve();
    });
  });
}
if (fs.existsSync("static/img/communities/optimized")) {
  fs.rmSync("static/img/communities/optimized", { recursive: true });
}
if (fs.existsSync("static/img/sponsors/optimized")) {
  fs.rmSync("static/img/sponsors/optimized", { recursive: true });
}
fs.mkdirSync("static/img/communities/optimized");
fs.mkdirSync("static/img/sponsors/optimized", { recursive: true });
Promise.all([
  optimizeFolderImages({
    sourceDir: "static/img/communities",
    size: 240,
  }),
  optimizeFolderImages({
    sourceDir: "static/img/sponsors",
    size: 240,
  }),
]);