Transparent Chrono

Professional online timer video generator supporting blue screen, green screen backgrounds. Create countdown and count-up videos perfect for video editing and live streaming.

🎬 Multi-color Backgrounds
⚡ Real-time Preview
🎨 Fully Customizable
📱 Responsive Design
💾 Auto Download

💡 Shortcuts: Ctrl+Enter Generate | Ctrl+S Save Config | ↑↓ Keys for Precise Adjustment | Supports Blue/Green Screen Backgrounds

🎬 Countdown Video Tip: Enable "Loop Playback" in your player or manually drag to the end to see 00:00:00 frame

⌨️ Operation Tip: Click font size slider or duration inputs, then use ↑↓ arrow keys for 1px/1 unit precise adjustment

🎯 Professional Chroma Key Tips: Use "Professional Chroma Key Mode" + Bold fonts (700+) + Blue/Green background for perfect keying results. The system automatically optimizes color contrast and edge sharpness.

1. Mode & Duration
2. Style & Layout
🎯 Professional Mode Features:
• Sharp pixel-perfect edges (no anti-aliasing)
• Multi-layer stroke for clean separation
• Automatic color contrast optimization
• Enhanced edge detection for perfect keying
Drag slider or use ↑↓ keys for precise adjustment (8-1200px) - Full Screen Support
3. Preset Templates
4. Chroma Key Optimization

🎯 Chroma Key Optimization Guide

Problem: Traditional timers often leave background color residue on number edges during chroma key.
Solution: Enable "Enhanced Edges" mode with these optimizations:
• Disable Canvas image smoothing for sharp edges
• Use integer coordinates to avoid sub-pixel rendering
• Optional thin stroke for enhanced edge clarity
Recommended: Blue screen + Enhanced edges + Bold fonts

5. Screen Settings
Live Preview - 1920×1080
1920×1080
01:00:00
1920×1080