Image Upscaler
AI super-resolution β make blurry images clear again. Use our free online calculator for fast, accurate results with no registration required. Simple, private, and ready to use in seconds.
How to use Image Upscaler
- 1Click "Upload image" and choose a JPG / PNG / WEBP to enlarge.
- 2Pick a scale factor (2Γ / 4Γ); the local AI super-resolution model rebuilds detail.
- 3Compare the preview, then click "Download" for the high-res result.
How AI super-resolution works
output pixels = source pixels Γ scale; missing detail is predicted from texture and edgesPlain stretching only interpolates pixels and blurs. AI super-resolution trains on massive image data to predict and generate the high-frequency detail that was never there β hair, text edges, textures β making the upscaled image sharper.
The model runs locally in your browser with no upload, great for restoring old photos, polishing e-commerce shots, or pre-press enlargement.
Frequently asked questions
How is it different from stretching?
Stretching interpolates and blurs; AI super-resolution predicts new detail, so edges and texture stay crisp.
Which factor is best?
2Γ looks most natural; 4Γ works for large posters but benefits from a sharp source.
Is my image leaked?
No. All inference runs locally in your browser; the file is never uploaded.