Image Enhancer — Upscale 2x & 4x
Upscale and sharpen any image instantly in your browser. No upload to server, no watermark, 100% private and free.
Upload your image
Drag & drop or click to browse — PNG, JPG, WebP supported
Processed in your browser — nothing uploaded
Frequently Asked Questions
Is this image enhancer free?
Yes, 100% free. No signup, no watermark, no limits. Enhance any image instantly in your browser.
How does the upscaling work?
The tool uses canvas-based bicubic interpolation with an unsharp mask sharpening pass to upscale your image 2x or 4x while preserving detail.
What formats are supported?
PNG, JPG, JPEG, and WebP. The enhanced output is saved as a high-quality PNG file.
Is there a file size limit?
There is no strict limit, but very large images (8K+) may be slow on older devices since processing happens in your browser.
Can I use enhanced images commercially?
Yes, the output is yours. No watermark, no attribution required. Use for any purpose.
Free Online Image Enhancer — Upscale Photos 2x & 4x Instantly
PNGraft's free image enhancer lets you upscale any photo to 2x or 4x resolution instantly in your browser. Using advanced canvas-based interpolation with unsharp mask sharpening, your images get bigger and sharper without losing quality. Perfect for enlarging photos for print, social media, presentations, and design projects. No server upload — your images stay 100% private. Works with PNG, JPG, and WebP formats. No signup, no watermark, completely free for personal and commercial use. Ideal for enhancing product photos, profile pictures, thumbnails, and low-resolution images. Get high-resolution results without expensive software like Photoshop or Topaz.