🔬 Image Upscaler
Enlarge and sharpen low-resolution images 2×, 3× or 4× — all locally in your browser, with no upload.
About the Image Upscaler
Got a photo that's too small or too soft to use? This tool enlarges images using high-quality stepped resampling (smooth bicubic-style scaling done in stages, which looks noticeably better than a single jump), then applies an optional unsharp mask to crisp up edges and a light denoise pass to clean up grain. Everything runs in your browser — your images never leave your device.
Two engines are available. Fast is the classical enlarger above — instant, no download. AI uses an ESRGAN super-resolution model that reconstructs plausible detail and runs on your device's GPU (nothing is uploaded; a small model downloads on first use).
An honest note: even AI can only synthesise plausible detail — it doesn't recover the true original, so don't treat an upscaled document, face or licence plate as factual evidence. For everyday photos it looks great; for forensic accuracy it does not.
JPG · PNG · WebP · BMP · GIF
The image is enlarged in repeated ×2 steps using the browser's high-quality smoothing (this avoids the blockiness of a single big jump). An unsharp mask then restores edge contrast lost to interpolation, and an optional denoise blur smooths sensor grain before sharpening. All processing is done on a <canvas> in your browser — nothing is uploaded.