Image Upscaling Tool
Use advanced interpolation algorithms to enlarge images while maintaining clarity and detail. Supports multiple upscale factors and interpolation methods.
Upload Images
Drag images here, or click to select files
Supports JPG, PNG, WebP, BMP formats, max 10MB
Upscale Settings
Quick Selection
Cubic: Balances quality and speed, suitable for most cases
Lanczos: Highest quality, longer processing time
Linear: Fast processing, average quality
Processing Results
Please upload image files first
How to Upscale Images
- Upload: Drag & drop your images into the upload area. Batch processing is supported.
- Select Factor: Choose how much you want to enlarge the image (2x, 3x, 4x, or 6x).
- Choose Algorithm: Select an interpolation method. Cubic is good for general use, while Lanczos offers higher quality.
- Process: Click "Start Upscaling" to begin. The tool processes images locally in your browser.
- Download: Once finished, download individual images or use the "Batch Download" button.
Why Use Our Image Upscaler?
- Local Processing: Your photos never leave your device. Privacy is guaranteed.
- Batch Support: Upscale multiple images at once to save time.
- High Quality: Uses advanced algorithms like Lanczos resampling to maintain sharpness.
- Free: Unlimited use with no watermarks or hidden fees.
Frequently Asked Questions
Does it use AI?
This tool uses advanced mathematical interpolation algorithms (like Cubic and Lanczos) rather than deep learning AI. It is faster and runs purely in the browser but may not hallucinate new details like generative AI.
What is the best algorithm?
For photos, Lanczos usually provides the best quality with sharp details. For speed, Linear is fastest.
Is there a file size limit?
Since processing happens on your device, the limit depends on your computer's memory (RAM). We recommend keeping individual files under 10MB for stability.