| Last Updated: November 2025 |
Version: 1.0.0 |
Welcome
FreeXmlToolkit is a free desktop application for working with XML files. It helps you edit, validate, transform, and secure your XML documents - all in one place.
Screenshot: Main application window
- Edit XML files with smart auto-completion and syntax highlighting
- Validate XML against XSD schemas to check for errors
- Transform XML into other formats (HTML, PDF, Text)
- Sign XML documents with digital certificates
- Create business rules with Schematron validation
- Generate documentation from your XSD schemas
FreeXmlToolkit is available for Windows, macOS, and Linux in multiple formats. Choose the one that works best for you.
Windows
| Format |
Architecture |
Description |
.exe |
x64, ARM64 |
Installer - Standard setup wizard. No admin rights required. Recommended for most users. |
.msi |
x64, ARM64 |
MSI Package - For enterprise deployment and silent installation via Group Policy. |
.zip |
x64, ARM64 |
Portable - No installation needed. Extract and run. Good for USB drives or restricted systems. |
macOS
| Format |
Architecture |
Description |
.dmg |
Intel (x64), Apple Silicon (ARM64) |
Disk Image - Standard macOS installation. Drag to Applications folder. |
.pkg |
Intel (x64), Apple Silicon (ARM64) |
Package Installer - Guided installation wizard. Useful for managed deployments. |
.zip |
Intel (x64), Apple Silicon (ARM64) |
Portable - No installation needed. Extract and run the app directly. |
Linux
| Format |
Architecture |
Description |
.deb |
x64, ARM64 |
Debian Package - For Ubuntu, Debian, Linux Mint. Install with sudo dpkg -i or double-click. |
.rpm |
x64, ARM64 |
RPM Package - For Fedora, Red Hat, openSUSE. Install with sudo rpm -i or dnf install. |
.zip |
x64, ARM64 |
Portable - No installation needed. Extract and run. Works on any Linux distribution. |
Note: Choose the architecture that matches your computer:
- x64 - Most computers (Intel/AMD processors)
- ARM64 - Newer ARM-based computers (Apple Silicon Macs, Windows on ARM, Raspberry Pi 4/5)
Feature Overview
XML Editor
Edit your XML files with professional tools:
| Feature |
What It Does |
| Auto-Completion |
Suggests valid elements and attributes as you type |
| Syntax Highlighting |
Colors your XML for easier reading |
| Instant Validation |
Shows errors immediately as you edit |
| Find & Replace |
Search and replace text in your documents |
| Code Folding |
Collapse sections to focus on what matters |
Work with XML Schema files:
| Feature |
What It Does |
| Visual Schema Viewer |
See your schema as an interactive diagram |
| Documentation Generator |
Create HTML documentation from schemas |
| Sample XML Generator |
Generate valid sample XML files |
| Schema Flattening |
Combine multiple schema files into one |
Convert XML into other formats:
| Feature |
What It Does |
| Multi-Format Output |
Generate XML, HTML, Text, or JSON |
| Live Preview |
See results as you work |
| Modern XSLT Support |
Uses the latest XSLT 3.0 standard |
Learn more: XSLT Guide
PDF Generation
Create professional PDF documents:
| Feature |
What It Does |
| XSL-FO Support |
Use XSL-FO stylesheets for formatting |
| High-Quality Output |
Professional PDF generation |
Learn more: PDF Generation Guide
Digital Signatures
Sign and verify XML documents:
| Feature |
What It Does |
| Create Certificates |
Generate your own signing certificates |
| Sign Documents |
Add digital signatures to XML files |
| Verify Signatures |
Check if signed documents are valid |
Learn more: Digital Signatures Guide
Schematron Validation
Define custom business rules:
| Feature |
What It Does |
| Business Rules |
Validate beyond basic XML structure |
| Visual Rule Builder |
Create rules without writing code |
| Detailed Reports |
Get clear validation results |
Learn more: Schematron Guide
Getting Started
Installation
- Download the installer for your operating system from the releases page
- Run the installer (no administrator rights required on Windows)
- Launch FreeXmlToolkit from your applications menu
Your First Steps
- Open an XML file: Use File → Open or drag a file into the window
- Load a schema (optional): Click the folder icon in the XSD Schema section
- Start editing: Type
< to see auto-completion suggestions
- Validate: Click “Validate” to check your document for errors
Sample Files
The application includes example files in the examples/ folder to help you get started:
- xml/ - Sample XML documents
- xsd/ - Sample XSD schemas
- xslt/ - Sample transformation stylesheets
- schematron/ - Sample business rules
Keyboard Shortcuts
| Shortcut |
Action |
Ctrl+S |
Save file |
Ctrl+Z |
Undo |
Ctrl+Y |
Redo |
Ctrl+F |
Find text |
Ctrl+H |
Find and replace |
< |
Open auto-completion |
Enter |
Accept suggestion |
Escape |
Close popup |
Documentation Pages
Feature Guides
Reference
Need Help?
- Browse the documentation pages listed above
- Check the example files included with the application
- Report issues on the project’s GitHub page
Quick Links