diff --git a/scripts/index-file.ts b/scripts/index-file.ts
index 5fd9963..a094e84 100644
--- a/scripts/index-file.ts
+++ b/scripts/index-file.ts
@@ -17,8 +17,9 @@
  */
 
 import { Client } from '@elastic/elasticsearch';
-import { readFileSync } from 'fs';
+import { createReadStream } from 'fs';
 import { resolve } from 'path';
+import { createInterface } from 'readline';
 import crypto from 'crypto';
 
 const ELASTICSEARCH_NODE = process.env.ELASTICSEARCH_NODE || 'http://localhost:9200';
@@ -89,43 +90,46 @@ async function indexFile(filePath: string, batchSize: number = DEFAULT_BATCH_SIZ
     await client.cluster.health({});
     console.log('✅ Connected successfully\n');
 
-    // Read file
-    console.log('📖 Reading file...');
+    // Process file line by line using streams
+    console.log('📖 Processing file...\n');
     const absolutePath = resolve(filePath);
-    const content = readFileSync(absolutePath, 'utf-8');
-    const lines = content.split('\n')
-      .map(line => line.trim())
-      .filter(line => line.length > 0);
     
-    console.log(`✅ Found ${lines.length} words/phrases to process\n`);
-
-    // Process in batches
+    let totalLines = 0;
     let indexed = 0;
     let skipped = 0;
     let errors = 0;
     const startTime = Date.now();
+    
+    let currentBatch: string[] = [];
+    
+    const fileStream = createReadStream(absolutePath, { encoding: 'utf-8' });
+    const rl = createInterface({
+      input: fileStream,
+      crlfDelay: Infinity
+    });
+
+    const processBatch = async (batch: string[]) => {
+      if (batch.length === 0) return;
 
-    for (let i = 0; i < lines.length; i += batchSize) {
-      const batch = lines.slice(i, i + batchSize);
       const bulkOperations: any[] = [];
 
       // Generate hashes for all items in batch first
       const batchWithHashes = await Promise.all(
-        batch.map(async (plaintext) => ({
+        batch.map(async (plaintext: string) => ({
           plaintext,
           hashes: await generateHashes(plaintext)
         }))
       );
 
       // Check which items already exist (by plaintext or any hash)
-      const md5List = batchWithHashes.map(item => item.hashes.md5);
-      const sha1List = batchWithHashes.map(item => item.hashes.sha1);
-      const sha256List = batchWithHashes.map(item => item.hashes.sha256);
-      const sha512List = batchWithHashes.map(item => item.hashes.sha512);
+      const md5List = batchWithHashes.map((item: any) => item.hashes.md5);
+      const sha1List = batchWithHashes.map((item: any) => item.hashes.sha1);
+      const sha256List = batchWithHashes.map((item: any) => item.hashes.sha256);
+      const sha512List = batchWithHashes.map((item: any) => item.hashes.sha512);
 
       const existingCheck = await client.search({
         index: INDEX_NAME,
-        size: batchSize * 5, // Account for potential multiple matches
+        size: batchSize * 5,
         query: {
           bool: {
             should: [
@@ -185,15 +189,35 @@ async function indexFile(filePath: string, batchSize: number = DEFAULT_BATCH_SIZ
             indexed += bulkOperations.length / 2;
           }
         } catch (error) {
-          console.error(`\n❌ Error processing batch ${i}-${i + batchSize}:`, error);
+          console.error(`\n❌ Error processing batch:`, error);
           errors += bulkOperations.length / 2;
         }
       }
 
       // Progress indicator
-      const progress = Math.min(i + batchSize, lines.length);
-      const percent = ((progress / lines.length) * 100).toFixed(1);
-      process.stdout.write(`\r⏳ Progress: ${progress}/${lines.length} (${percent}%) - Indexed: ${indexed}, Skipped: ${skipped}, Errors: ${errors}`);
+      process.stdout.write(`\r⏳ Processed: ${totalLines} - Indexed: ${indexed}, Skipped: ${skipped}, Errors: ${errors}`);
+    };
+
+    for await (const line of rl) {
+      const trimmedLine = line.trim();
+      if (trimmedLine.length > 0) {
+        // Only take first word (no spaces or separators)
+        const firstWord = trimmedLine.split(/\s+/)[0];
+        if (firstWord) {
+          totalLines++;
+          currentBatch.push(firstWord);
+
+          if (currentBatch.length >= batchSize) {
+            await processBatch(currentBatch);
+            currentBatch = [];
+          }
+        }
+      }
+    }
+
+    // Process remaining items in last batch
+    if (currentBatch.length > 0) {
+      await processBatch(currentBatch);
     }
 
     // Refresh index
@@ -206,7 +230,7 @@ async function indexFile(filePath: string, batchSize: number = DEFAULT_BATCH_SIZ
     console.log('\n━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━');
     console.log('✅ Indexing complete!');
     console.log(`━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━`);
-    console.log(`Total processed: ${lines.length}`);
+    console.log(`Total processed: ${totalLines}`);
     console.log(`Successfully indexed: ${indexed}`);
     console.log(`Skipped (duplicates): ${skipped}`);
     console.log(`Errors: ${errors}`);