Online JAR Modifier - Edit Manifest, Properties & Resources, Rebuild JAR

📦 JAR Modifier

Extract, edit manifest & resources, then rebuild your JAR file online

✓ Manifest Editor ✓ Properties & XML ✓ Config Resources ✓ Rebuild JAR ✓ No Install
📦
Drop JAR file here
Or click to select (.jar, .war, .ear - max 50MB)
📁 Files 0 files
Select a file to edit
app.jar - 0 files modified

About JAR Modifier

📄 Manifest Editing

Edit META-INF/MANIFEST.MF to change the Main-Class, version, class-path and other attributes.

📋 Properties & Config

Modify application.properties, YAML, XML and other configuration bundled inside the JAR.

🔧 Rebuild JAR

Repackage all your changes back into a working JAR archive, ready to download and run.

🔒 Private & Fast

Files are processed in a temporary session and automatically removed after 60 minutes.

Processing...

Encoding and Data Utilities

Encode, decode, measure sizes, and transform common formats.

Search Tutorials