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Dockerfile

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+FROM node:18
+
+# Install tesseract + poppler-utils untuk OCR & PDF konversi
+RUN apt-get update && apt-get install -y \
+    tesseract-ocr \
+    tesseract-ocr-ind \
+    poppler-utils \
+    && rm -rf /var/lib/apt/lists/*
+
+# Buat folder app
+WORKDIR /app
+
+# Copy package.json dan install dependencies
+COPY package.json ./
+RUN npm install
+
+# Copy semua file
+COPY . .
+
+# Expose port
+EXPOSE 7860
+
+# Jalankan server
+CMD ["npm", "start"]

package.json

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+{
+  "name": "ocr-server",
+  "version": "1.0.0",
+  "main": "server.js",
+  "scripts": {
+    "start": "node server.js"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "description": "",
+  "dependencies": {
+    "express": "^5.1.0",
+    "multer": "^2.0.2",
+    "pdf-parse": "^1.1.1",
+    "pdf-poppler": "^0.2.1",
+    "tesseract.js": "^6.0.1"
+  }
+}

server.js

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+const express = require('express');
+const Tesseract = require('tesseract.js');
+const fs = require('fs');
+const path = require('path');
+const { convert } = require('pdf-poppler');
+
+const app = express();
+app.use(express.json({ limit: '50mb' }));
+
+// Buat folder uploads kalau belum ada
+const uploadDir = path.join(__dirname, 'uploads');
+if (!fs.existsSync(uploadDir)) fs.mkdirSync(uploadDir);
+
+app.post('/ocr', async (req, res) => {
+    try {
+        const { file } = req.body;
+        if (!file) return res.status(400).json({ success: false, error: 'Base64 file string not provided' });
+
+        // Simpan base64 → PDF
+        const pdfPath = path.join(uploadDir, `file_${Date.now()}.pdf`);
+        fs.writeFileSync(pdfPath, Buffer.from(file, 'base64'));
+
+        // Convert PDF → PNG (halaman pertama)
+        const outputBase = pdfPath.replace('.pdf', '');
+        await convert(pdfPath, {
+            format: 'png',
+            out_dir: uploadDir,
+            out_prefix: path.basename(outputBase),
+            page: 1,              // ambil halaman pertama
+            scale: 1024           // resolusi
+        });
+
+        const imagePath = path.join(uploadDir, `${path.basename(outputBase)}-1.png`);
+
+        // OCR dengan Tesseract
+        const { data: { text } } = await Tesseract.recognize(imagePath, 'ind+eng');
+
+        // Bersihkan file sementara
+        fs.unlinkSync(pdfPath);
+        fs.unlinkSync(imagePath);
+
+        res.json({ success: true, text });
+    } catch (error) {
+        res.status(500).json({ success: false, error: error.message });
+    }
+});
+
+// Hugging Face Spaces pakai port 7860
+const PORT = process.env.PORT || 7860;
+app.listen(PORT, "0.0.0.0", () => {
+    console.log(`🚀 OCR server running on http://0.0.0.0:${PORT}`);
+});