Thumbnail Creator
Create perfectly sized thumbnails for any platform
Original Image
-
Dimensions: -
Size: -
Thumbnail
Dimensions: -
Estimated size: -
Drag and drop your image here, or
Supports JPG, PNG, WebP (max 10MB)
Original image will appear here
Thumbnail will appear here after creation
This free, browser-based thumbnail creator helps you generate perfectly sized thumbnails using presets (YouTube, Instagram, Facebook, HD, etc.) or custom dimensions. Choose a resize method — Fit to keep all content with letterboxing, or Fill to crop and fill the frame — then adjust quality and output format (JPG/PNG/WebP). All processing happens locally, so your images never leave your device.
Related image tools: Image Compressor · Color Palette Extractor · Simple Meme Maker.
- Click Browse Files (or drag an image) to upload.
- Select a Preset Size or enter Custom Size (maintain ratio if needed).
- Choose Resize Method: Fit (letterbox) or Fill (crop to fill).
- Adjust the Quality slider and choose an Output Format (JPG/PNG/WebP).
- Click Create Thumbnail to render the result.
- Use Download to save the thumbnail; Reset clears the current state.