ThumbCraft - Professional Video Thumbnail Generator

A modern, feature-rich video thumbnail generator built with pure HTML, Tailwind CSS, and JavaScript. Create stunning thumbnails for YouTube, Instagram, TikTok, Twitter, and other social media platforms.

Features

Video Sources

• Local Files - Upload videos from your device (MP4, WebM, MOV, AVI)
• YouTube URLs - Fetch existing thumbnails directly from any YouTube video
• Direct URLs - Load videos from any direct video file URL

YouTube Thumbnail Fetcher

Paste any YouTube video URL to instantly fetch all available thumbnail sizes:

• Max Resolution (1280x720)
• Standard Definition (640x480)
• High Quality (480x360)
• Medium Quality (320x180)

Platform Presets

• YouTube - 1280x720 (16:9)
• Instagram Post - 1080x1080 (1:1)
• Instagram Story/Reels - 1080x1920 (9:16)
• TikTok - 1080x1920 (9:16)
• Twitter/X - 1200x675 (16:9)
• Facebook - 1200x630
• LinkedIn - 1200x627
• Custom - Any size you need

Video Controls

• Precise frame-by-frame navigation
• Seek by seconds or minutes
• Timeline scrubbing
• Keyboard shortcuts for power users

Export Options

• PNG - Lossless quality
• JPEG - Smaller file size
• WebP - Modern format with excellent compression
• Adjustable quality slider (50-100%)
• Single image or batch ZIP download

Auto Capture

• Generate thumbnails at regular intervals
• Percentage-based (2%, 4%, 5%, 10%)
• Time-based (1s, 5s, 10s, 30s, 1m)

Modern UI/UX

• Dark glassmorphism design
• Smooth animations
• Responsive layout
• Keyboard shortcuts

Keyboard Shortcuts

Key	Action
Space	Play/Pause video
←	Seek -1 second
→	Seek +1 second
Shift + ←	Seek -5 seconds
Shift + →	Seek +5 seconds
C	Capture current frame

Technology Stack

• HTML5 - Semantic markup
• Tailwind CSS - Utility-first styling (via CDN)
• Vanilla JavaScript - No framework dependencies
• JSZip - Batch export functionality
• FileSaver.js - Download handling

Browser Support

• Chrome 80+
• Firefox 75+
• Safari 13+
• Edge 80+

Usage

For Local/URL Videos

1. Load a video from your device or via direct URL
2. Navigate to the desired frame using video controls
3. Select a platform preset or set custom dimensions
4. Click "Capture Frame" to take a thumbnail
5. Download individual images or batch export as ZIP

For YouTube Videos

1. Select the "YouTube" tab
2. Paste any YouTube video URL (youtube.com/watch?v=... or youtu.be/...)
3. Click "Fetch Thumbnails" to see all available sizes
4. Click any thumbnail to add it to your gallery
5. Download or batch export as needed

Local Development

Simply serve the files with any static HTTP server:

python -m http.server 5000

Then open http://localhost:5000 in your browser.

License

MIT License - See LICENSE file for details.