About

Useful Tools Collection provides free online tools that anyone can use easily.

Our Mission

To provide useful tools that can be used quickly and safely without complicated processes.

Key Features

🔒 Security

All file processing is done only in your browser. No files are sent to the server.

⚡ Speed

Client-side processing means no upload/download time.

💰 Free

Use all features for free without registration.

📱 Cross-Platform

Works on desktop, tablet, and mobile devices.

Available Tools

Excel File Merger

• Merge multiple Excel files at once
• Automatic column matching
• Real-time preview
• Completely free, no server upload

PDF File Merger (Coming Soon)

• Merge multiple PDF files
• Adjust page order
• Fast processing speed
• Process directly in browser

Text Comparison (Coming Soon)

• Real-time text comparison
• Difference highlighting
• Code comparison support
• Merge functionality

Technology Stack

• Hugo: Static site generator
• Bulma: CSS framework
• SheetJS: Excel file processing
• Font Awesome: Icons

Privacy

We take user privacy very seriously:

• Uploaded files are never sent to the server
• All processing is done in the browser
• No personal information collection
• No file storage

For details, please see our Privacy Policy.

Contact

For inquiries or suggestions, please contact us via GitHub Issues.

Thank you for using our tools!