Generate thumbnails from images online for free. Create perfect social media previews, profile pictures, and website thumbnails instantly.
Choose a file or drag it here
Supported formats:jpgjpegpngwebp|Max: 50MB
OR ENTER URL
Secure & Private
All files are automatically deleted after 1 hour.
Fast Cloud Processing
High-speed conversion using powerful servers.
No Watermarks
We never add watermarks to your converted files.
AD
Bottom Leaderboard
How to thumbnail generator?
Generate thumbnails from images online for free. Create perfect social media previews, profile pictures, and website thumbnails instantly.
1
Upload Image
Drag & drop your image file or click to browse.
2
Adjust Settings
Choose output format and quality settings.
3
Download
Your converted image is ready to download instantly.
Frequently Asked Questions
What is a thumbnail generator?
A thumbnail generator creates small preview images from larger photos. Thumbnails are commonly used for website galleries, social media previews, profile pictures, and video thumbnails. They help save storage space and load web pages faster.
What size should a thumbnail be?
Common thumbnail sizes include 256x256 for profile pictures, 1280x720 for YouTube thumbnails, and 150x150 for website galleries. You can customize dimensions using the width and height options. We recommend 256x256 as a versatile default.
How do I maintain aspect ratio?
Enable 'Maintain Aspect Ratio' to preserve the original proportions. The thumbnail will scale to fit within your specified dimensions while keeping the original aspect ratio. Use 'Fit Mode' to choose between cropping (cover), adding padding (contain), or stretching (fill).
Which format should I use?
Use JPG for photos and web content - it offers good compression. Choose PNG for graphics with transparency or when quality is critical. WebP provides the best compression and quality balance for modern web use.
Can I create multiple sizes at once?
Currently this tool creates one thumbnail per image with your specified dimensions. For batch processing multiple sizes, use our bulk conversion features or process each image separately with different settings.