JSON Swiss

JSON Swiss

JAR to JSON File Converter

JAR File Input

Drop JAR file here or click to browse

Supports .jar, .war, and .ear files

JSON Output

JAR Analysis Result

Upload a JAR file to see the analysis

How to convert JAR to JSON

  1. Step 1 – Select a JAR, WAR, or EAR File

    • Drag and drop your Java archive file directly into the upload zone, or click to browse your computer.
    • The tool supports standard libraries (.jar), web applications (.war), and enterprise archives (.ear).
    • The file is processed locally in your browser—no upload to a remote server occurs, ensuring source code confidentiality.

  2. Step 2 – Analyze Structure & Metadata

    • The converter automatically parses the archive headers to display file statistics (size, file count, compression).
    • It extracts the MANIFEST.MF data to show versioning, build-jdk, and main-class attributes.
    • The internal folder structure is mapped to a JSON tree, revealing package organization and resource locations.

  3. Step 3 – Export Analysis as JSON

    • Review the generated JSON in the editor to ensure it contains the required level of detail.
    • Use the Options menu to include/exclude specific sections like "Classes" or "Resources" to optimize output size.
    • Click "Download JSON" to save the full analysis report for documentation or dependency auditing tools.
Example Output (Simplified)
{
	  "manifest": {
    "Manifest-Version": "1.0",
    "Main-Class": "com.example.Main"
  },
  "structure": {
    "totalFiles": 15,
    "packages": ["com.example"]
  },
  "classes": [
    {
      "className": "Main",
      "packageName": "com.example"
    }
  ]
}

Related Tools

JSON to Dict

Convert JSON to Python dictionary format.

JSON Validator

Validate the analysis JSON output.

Frequently Asked Questions

What can the JAR to JSON converter analyze?

The converter can extract and analyze JAR file structure, including class files, resources, manifest information, package structure, dependencies, and metadata. It supports JAR, WAR, and EAR files.

What information is included in the JSON output?

The JSON output includes manifest data (main class, version, build info), class structure (packages, classes, methods, fields), resource files, overall structure statistics, and metadata about the JAR type and size.

Is the content of files extracted?

By default, file content is not extracted for security reasons. You can enable content extraction in the analysis options, but this should only be done with trusted JAR files.

What types of JAR files are supported?

The tool supports standard JAR files, WAR (Web Application Archive) files, and EAR (Enterprise Application Archive) files. It can identify executable JARs, libraries, and web applications.

How accurate is the class analysis?

The current implementation provides basic class structure analysis including package names, class names, and file organization. For detailed bytecode analysis including methods and fields, a more advanced Java bytecode parser would be needed.

Can I use this for security analysis?

Yes, this tool can help with security analysis by revealing the structure of JAR files, identifying dependencies, and showing resource files. However, it should be used alongside other security tools for comprehensive analysis.

Is my data secure?

Yes, all data processing happens entirely in your browser. Your JAR file is analyzed locally and never sent to any server, ensuring completely private and secure analysis.

JAR to JSON Converter Online | JSONSwiss