Thumbnail Generator
Generate thumbnails from images with multiple size presets, custom dimensions, and batch processing.
Drag and drop your image here, or click to browse
Supports: JPG, PNG, WebP, GIF (Max 10MB)
Multiple Sizes
Generate thumbnails in multiple preset sizes or custom dimensions all at once.
Flexible Modes
Choose between maintaining aspect ratio or cropping to fit for perfect thumbnails.
Batch Download
Download individual thumbnails or get all sizes in a single ZIP file.
How to Use Thumbnail Generator
Upload Your Image
Drag and drop your image or click to browse. Supports JPG, PNG, WebP, and GIF up to 10MB.
Select Sizes and Mode
Choose one or more preset sizes, or enter custom dimensions. Select between maintain aspect ratio or crop to fit mode.
Generate and Download
Click "Generate Thumbnails" to create all selected sizes. Download individually or as a ZIP file.
Frequently Asked Questions
What thumbnail sizes can I generate?
You can generate thumbnails in preset sizes (64x64, 128x128, 256x256, 512x512) or specify custom dimensions. You can also generate multiple sizes at once for batch processing.
What is the difference between maintain aspect ratio and crop to fit?
Maintain aspect ratio preserves the original image proportions, resulting in thumbnails that may not be perfectly square. Crop to fit creates perfectly square thumbnails by cropping the image to fill the entire thumbnail area.
Can I generate multiple thumbnail sizes at once?
Yes! Simply check multiple preset sizes or add a custom size, and all selected thumbnails will be generated together. You can download them individually or as a ZIP file.
How do I download all thumbnails at once?
After generating your thumbnails, click the "Download All as ZIP" button to download all generated thumbnails in a single ZIP file with properly named files.
Are my images uploaded to a server?
No, all thumbnail generation happens directly in your browser. Your images never leave your device, ensuring complete privacy and security.
What image formats are supported?
The Thumbnail Generator supports JPG, PNG, WebP, and GIF formats. Generated thumbnails maintain the original image format.