Free AI Image Upscaler – Enlarge Photos 4x Without Losing Quality | FMThub
Upscale low-resolution images 2x, 3x, or 4x with AI super-resolution. Fix pixelated photos, enhance blurry images, and improve print quality. Professional-grade Lanczos interpolation + smart sharpening. Free online image upscaler—no upload, browser processing.
Professional Algorithms
Lanczos 3 interpolation and Unsharp Masking for sharper, higher-resolution results—no quality loss
Fast Processing
WebGL-accelerated enhancement; most images finish in seconds, entirely in your browser
Privacy Protected
All processing runs locally—your images never leave your device
Upscale low-resolution images 2x, 3x, or 4x with AI super-resolution. Fix pixelated photos, enhance blurry images, and improve print quality. Professional-grade Lanczos interpolation + smart sharpening. Free online image upscaler—no upload, browser processing.
Professional Super-Resolution Settings
Lanczos 3 + Unsharp Masking
Industry-standard interpolation, color-accurate, optional sharpening
Disable for best quality, larger file size
Select Enhancement Mode
Enhanced Adaptive USM + Color Protection
Enhanced Edge-Directed Interpolation + Multi-scale Sharpening
Enhanced Deblur + Readability Enhancement
Drag and drop images here, or click to select
Supports JPEG, PNG, WebP, AVIF, HEIC
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