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Installation Guide

Gantt Maker is a standalone Windows application that requires no complex installation. Simply download the executable and launch it to start planning your projects visually.

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System Requirements

Operating System

Windows 7 or later (Windows 10/11 recommended)

Web Browser

Modern browser: Chrome 90+, Firefox 88+, Edge 90+, or Safari 14+

Storage

Less than 5MB disk space for the executable

Internet

Required only for initial download (app works offline)
No administrator privileges required - Gantt Maker runs directly without installation.

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Download

Download the latest version of Gantt Maker from the official GitHub repository:

Download GANNTpixelbits.exe

Click to download the latest version from GitHub
Only download Gantt Maker from the official GitHub repository. Third-party sources may contain modified or unsafe versions.

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Alternative Download Methods

# Download using curl
curl -L -o GANNTpixelbits.exe https://github.com/Pacheco55/Gantt-Maker/raw/refs/heads/main/GANNTpixelbits.exe

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Launch Instructions

1

Locate the downloaded file

Navigate to your Downloads folder (or wherever you saved GANNTpixelbits.exe).
2

Launch the application

Double-click GANNTpixelbits.exe to launch Gantt Maker.
Windows may display a SmartScreen warning for unrecognized applications. Click “More info” and then “Run anyway” to proceed.
3

Application opens in browser

The application will automatically open in your default web browser, displaying the Gantt Maker interface.
The executable acts as a local server that hosts the HTML5 application. You can bookmark the page for quick access.

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Browser Compatibility

Gantt Maker is built with modern HTML5 web standards and works on all current browsers:
Recommended browsers
  • Chrome 90 or later
  • Edge 90 or later (Chromium-based)
Full support for all features including LocalStorage, responsive design, and drag-and-drop.

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JavaScript Requirement

Gantt Maker requires JavaScript to be enabled in your browser. If you see a blank page, check your browser’s JavaScript settings.

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LocalStorage Support

Gantt Maker stores your project data using browser LocalStorage:
  • Storage capacity: Typically 5-10MB per domain
  • Persistence: Data remains until you clear browser data
  • Privacy: All data stays on your device - no cloud uploads
Regularly export your projects to JSON files to create backups that aren’t tied to your browser.

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Troubleshooting

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Application Won’t Launch

Symptom: Windows prevents the file from running with a security warning.Solution:
  1. Right-click GANNTpixelbits.exe
  2. Select Properties
  3. Check the box next to Unblock at the bottom
  4. Click Apply and OK
  5. Double-click the file again
Alternatively:
  1. Click More info in the SmartScreen dialog
  2. Click Run anyway
Symptom: The executable runs but no browser window appears.Solution:
  1. Check if a browser window opened in the background
  2. Look for a localhost address in your taskbar
  3. Manually open your browser and navigate to:
    • http://localhost:8080 or
    • http://127.0.0.1:8080
  4. Try a different browser if the page doesn’t load
Symptom: Antivirus program quarantines or deletes the file.Solution:
  1. Add GANNTpixelbits.exe to your antivirus exclusion list
  2. Restore the file from quarantine if deleted
  3. Re-download if necessary
Gantt Maker is open source and safe. Antivirus false positives can occur with unsigned executables.
Symptom: Error message about port already being used.Solution:
  1. Close any other local development servers
  2. Close any other instances of Gantt Maker
  3. Restart your computer if the issue persists
  4. Check for applications using common ports (8080, 8000, 3000)

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Interface Issues

Symptoms: Page is blank, missing elements, or doesn’t respond to clicks.Solutions:
  1. Check JavaScript: Ensure JavaScript is enabled in your browser
  2. Clear cache: Press Ctrl+Shift+Delete and clear cached files
  3. Hard refresh: Press Ctrl+F5 to reload without cache
  4. Try another browser: Test in Chrome, Firefox, or Edge
  5. Check console: Press F12 and look for errors in the Console tab
Symptom: Changes disappear when you refresh the page.Cause: LocalStorage may be disabled or full.Solutions:
  1. Check if your browser allows LocalStorage:
    • Open browser settings
    • Search for “Site data” or “Cookies”
    • Ensure LocalStorage is enabled
  2. Clear old LocalStorage data from other sites
  3. Use Export function to save projects as JSON files
Symptom: Elements are misaligned or cut off on smaller screens.Solution: Gantt Maker is responsive but optimized for desktop use:
  • Desktop: Full feature set with all controls
  • Tablet: Touch-optimized interface with core features
  • Mobile: Focused view for critical tasks only
For the best experience, use Gantt Maker on a desktop or tablet with at least 768px width.
Symptom: Can’t drag tasks between team members.Solutions:
  1. Check browser: Safari may have different drag behavior
  2. Use alternative: Click the task and use the assignment dropdown
  3. Try touch events: On touch devices, long-press then drag
  4. Update browser: Ensure you’re using the latest version

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Performance Issues

Solutions:
  1. Close other tabs: Free up browser resources
  2. Clear browser cache: Remove old cached data
  3. Restart browser: Fresh start can improve performance
  4. Check system resources: Close unnecessary applications
  5. Use a modern browser: Chrome/Edge typically perform best
Symptom: Projects with many tasks take time to render.Best practices:
  • Break large projects into phases
  • Archive completed tasks
  • Export and start fresh for new project phases
  • Use Date Mode instead of Hour Mode for long-term projects

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Advanced Features

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Weekend and Date Exclusions

Configure which days are excluded from your timeline:
1

Access exclusion settings

Click the Settings or Configuration button in the interface.
2

Enable weekend exclusion

Toggle the Exclude Weekends option to automatically skip Saturdays and Sundays in your timeline calculations.
Perfect for traditional Monday-Friday work schedules.
3

Add custom exclusions

Specify individual dates to exclude (holidays, team days off, etc.).This ensures your timeline reflects actual working time.

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Custom Time Blocks

Define non-working hours for hour-based timelines:
1

Switch to Hour Mode

Custom time blocks are available when using Hour Mode for precise scheduling.
2

Define working hours

Set your team’s working hours (e.g., 9:00 AM - 5:00 PM).Non-working hours will be visually distinguished in the timeline.
3

Add break periods

Specify lunch breaks or other non-working periods within the day.

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Color Palette Customization

Match Gantt Maker to your brand:
  1. Team member colors: Click any color swatch to open the color picker
  2. Theme options: Some versions support light/dark mode preferences
  3. Consistent branding: Use your company’s color scheme for team assignments
Color settings are saved with your project data in LocalStorage.

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Export and Import Projects

Save projects as JSON files
  1. Click the Export button in the interface
  2. Choose a file name and location
  3. Save the .json file
Benefits:
  • Create backups independent of browser storage
  • Share projects with team members
  • Maintain multiple versions/scenarios
  • Migrate between computers

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Data Management Best Practices

Regular Exports

Export your project at the end of each work session or after major changes

Version Control

Save multiple versions with descriptive names (e.g., “project-v1-baseline.json”, “project-v2-revised.json”)

Backup Strategy

Keep exported JSON files in cloud storage (Dropbox, Google Drive) for redundancy

Team Sharing

Share exported JSON files via email or shared drives for team collaboration
Create a naming convention for your exports: [ProjectName]-[Date]-[Version].json (e.g., Website-Redesign-2026-03-10-v1.json)

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Privacy and Security

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Your Data Stays Local

Gantt Maker stores all data locally on your device using browser LocalStorage. No data is transmitted to external servers.
What this means:
  • ✓ Complete privacy - no tracking or analytics
  • ✓ Works offline after initial download
  • ✓ No account registration required
  • ✓ Zero data collection
  • ✓ No internet dependency

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Data Storage Location

Your project data is stored in:
  • Browser LocalStorage: Tied to the specific browser and domain
  • Exported JSON files: Wherever you save them on your file system
Clearing browser data will delete your projects. Always export important projects to JSON files.

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Security Considerations

  • Local only: Data never leaves your device unless you explicitly export it
  • No cloud sync: No risk of cloud data breaches
  • Open source: Code can be audited for security
  • No dependencies: Minimal attack surface

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Getting Help

If you encounter issues not covered in this guide:

GitHub Issues

Report bugs or request features on the official repository

YouTube Channel

Watch tutorials and demos from PIXELBITS Studio

Twitter

Follow for updates and tips

Twitch

Join live streams and ask questions

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Next Steps

Now that you have Gantt Maker installed and configured, head over to the Quickstart guide to create your first project.

Quickstart Guide

Learn how to create your first Gantt chart in 30 seconds

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