diff --git a/app/build.gradle b/app/build.gradle
index c36e8d1..a8a0909 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -6,8 +6,8 @@ android {
         applicationId "us.spotco.malwarescanner"
         minSdkVersion 16
         targetSdkVersion 32
-        versionCode 90
-        versionName "2.27"
+        versionCode 91
+        versionName "2.28"
         resConfigs 'en', 'af', 'de', 'es', 'fi', 'fr', 'it', 'pl', 'pt', 'ru'
     }
     buildTypes {
diff --git a/app/src/main/java/us/spotco/malwarescanner/Database.java b/app/src/main/java/us/spotco/malwarescanner/Database.java
index c20017a..0808b61 100644
--- a/app/src/main/java/us/spotco/malwarescanner/Database.java
+++ b/app/src/main/java/us/spotco/malwarescanner/Database.java
@@ -139,7 +139,7 @@ class Database {
                                 if (line.length() > 0) {
                                     String[] lineS = line.split(":");
                                     if (lineS[0].length() > 0) {
-                                        signaturesMD5.put(lineS[0].substring(0, Utils.MAX_HASH_LENGTH), lineS[2]);
+                                        signaturesMD5.put(lineS[0].substring(0, Utils.MAX_HASH_LENGTH), lineS[2].intern());
                                     }
                                 }
                             }
@@ -148,9 +148,9 @@ class Database {
                                 if (line.length() > 0) {
                                     String[] lineS = line.split(":");
                                     if (lineS[0].length() == 32) {
-                                        signaturesSHA1.put(lineS[0].substring(0, Utils.MAX_HASH_LENGTH), lineS[2]);
+                                        signaturesSHA1.put(lineS[0].substring(0, Utils.MAX_HASH_LENGTH), lineS[2].intern());
                                     } else if (lineS[0].length() > 0) {
-                                        signaturesSHA256.put(lineS[0].substring(0, Utils.MAX_HASH_LENGTH), lineS[2]);
+                                        signaturesSHA256.put(lineS[0].substring(0, Utils.MAX_HASH_LENGTH), lineS[2].intern());
                                     }
                                 }
                             }
@@ -160,6 +160,7 @@ class Database {
                         e.printStackTrace();
                     }
                 }
+                System.gc();
             }
             signaturesMD5.put("44d88612fea8a8f36de82e1278abb02f".substring(0, Utils.MAX_HASH_LENGTH), "Eicar-Test-Signature");
             signaturesSHA256.put("6a0b4866f143c32e651662cebf7f380d27b0db809db3b6a34cf34c7436ab6bbf".substring(0, Utils.MAX_HASH_LENGTH), "Hypatia-Test-Signature");
diff --git a/app/src/main/java/us/spotco/malwarescanner/Utils.java b/app/src/main/java/us/spotco/malwarescanner/Utils.java
index 9c46891..4ffa6b1 100644
--- a/app/src/main/java/us/spotco/malwarescanner/Utils.java
+++ b/app/src/main/java/us/spotco/malwarescanner/Utils.java
@@ -39,7 +39,7 @@ class Utils {
     public final static int MAX_SCAN_SIZE_REALTIME = MAX_SCAN_SIZE / 2; //40MB
     public final static String DATABASE_URL_DEFAULT = "https://divested.dev/MalwareScannerSignatures/";
 
-    public final static int MAX_HASH_LENGTH = 12;
+    public final static int MAX_HASH_LENGTH = 8;
 
     public static final AtomicInteger FILES_SCANNED = new AtomicInteger();
     private static ThreadPoolExecutor threadPoolExecutor = null;
diff --git a/fastlane/metadata/android/en-US/changelogs/91.txt b/fastlane/metadata/android/en-US/changelogs/91.txt
new file mode 100644
index 0000000..bf9f969
--- /dev/null
+++ b/fastlane/metadata/android/en-US/changelogs/91.txt
@@ -0,0 +1 @@
+* Various memory optimizations
diff --git a/scripts/0clamav.sh b/scripts/0clamav.sh
index fe843c4..50ead77 100644
--- a/scripts/0clamav.sh
+++ b/scripts/0clamav.sh
@@ -3,7 +3,9 @@
 #Description: Hypatia conversion script for ClamAV databases (GPL-2.0)
 
 #sudo -i freshclam
+origDir="$PWD"
 mkdir /tmp/mss
+mkdir /tmp/mss/optimized
 mkdir /tmp/mss/processed
 cd /tmp/mss
 cp /var/lib/clamav/main.c*d .
@@ -30,10 +32,13 @@ grep "Multios\\." daily.hsb >> Android.hsb
 databases=("Android.hdb" "Android.hsb" "main.hdb" "main.hsb" "daily.hdb" "daily.hsb");
 for db in "${databases[@]}"
 do
-	sort --parallel=$(nproc) --unique "$db" --output processed/"$db";
+	#remove unnecessary bits to reduce file size and app memory usage
+	python "$origDir"/optimize.py "$db" >> optimized/"$db";
+	#sort to increase compression efficiency
+	sort -k3 -t ":" --parallel=$(nproc) --output processed/"$db" optimized/"$db";
 done;
 
-gzip /tmp/mss/*.hdb
-gzip /tmp/mss/*.hsb
-gzip /tmp/mss/processed/*.hdb
-gzip /tmp/mss/processed/*.hsb
+gzip -k /tmp/mss/*.hdb
+gzip -k /tmp/mss/*.hsb
+gzip -k /tmp/mss/processed/*.hdb
+gzip -k /tmp/mss/processed/*.hsb
diff --git a/scripts/optimize.py b/scripts/optimize.py
new file mode 100755
index 0000000..bba9e36
--- /dev/null
+++ b/scripts/optimize.py
@@ -0,0 +1,8 @@
+import sys
+
+database = open(sys.argv[1], "r");
+for line in database:
+	arrSplit = line.strip().split(":");
+	strHash = arrSplit[0];
+	strName = arrSplit[2].split("-")[0];
+	print(strHash + ":0:" + strName);