Thumbnail YouTube Size Converter
Smart YouTube thumbnail converter that preserves your original image dimensions when possible. Only adds black padding when needed to achieve 16:9 aspect ratio. Keeps file sizes minimal while meeting YouTube requirements.
Smart conversion preserves original dimensions when possible, adds padding only when needed
YouTube Requirements
Dimensions: 1280×720px (16:9)
Max File Size: 2MB
Accepted Formats: JPG, PNG, GIF, WebP
Minimum Resolution: 640×360px
How it works:
- Automatically detects your image aspect ratio
- Scales to fit YouTube's 16:9 format without cropping
- Adds black padding (letterbox/pillarbox) as needed
- Compresses to under 2MB while maintaining quality
- Preserves your entire image content
Features
✓No cropping - preserves entire image
✓Smart aspect ratio conversion
✓Automatic size optimization
✓Instant processing
✓Privacy-focused (browser-based)