Image Enlarger — Upscale Image 2×/3×/4×
Enlarge & sharpen a small image 2×/3×/4× on your device.
Enlarge a small image and make it sharper with Toolzo's image enlarger. Upscale the image 2×, 3× or 4×, or enlarge image size in KB, entirely on your device. It's a fast, free way to increase image size and clarity without uploading your photo to any server.
How it works
- Upload the small image you want to enlarge.
- Choose how much to enlarge (2×/3×/4×) and the sharpening level.
- Press Enhance.
- Download the larger, sharper image.
Frequently asked questions
Can I enlarge an image online for free?
Yes — upscale 2×/3×/4× and sharpen, free and entirely in your browser.
Is this AI super-resolution?
It's a high-quality smart enlarge and sharpen that improves size and clarity on your device — instant, free and private, though results differ from heavy paid AI tools.
Is anything uploaded?
No — all processing happens in your browser.
Does it work on mobile (Android & iPhone)?
Yes — it runs in any modern mobile browser, no app to install, and works the same on Android and iPhone.
Is it safe and private?
Yes. Your file is processed in your browser and never uploaded to any server, so nothing is stored or shared.
Do I need to sign up or pay?
No — it's completely free, with no signup, no watermark and no limits.
How to check a file's size
- Windows: right-click the file → Properties → see Size (and "Size on disk").
- Mac: click the file and press Cmd + I (Get Info) → see Size.
- Android: open Files / Gallery → long-press the image → Details / Info.
- iPhone: open the Files app → long-press the file → Info.
1 MB = 1024 KB. If a form asks for a photo "under 50 KB", it means 50 kilobytes — use the tool above to hit that exact size.