How to upscale image
- Drag and drop your image, or click to browse and select it.
- Choose how much to enlarge it — 2×, 3× or 4×.
- Click Upscale image to redraw it at the higher resolution on your device.
- Download your enlarged image.
What you can use it for
- Enlarge a small image so it prints or displays bigger
- Increase an image's pixel dimensions for a larger layout
- Scale up a thumbnail or logo without hard, jagged edges
- Make a photo big enough to meet a minimum-resolution requirement
Why use FlowVid Tools
- Private by default — we never store your images. They're discarded the moment you're done.
- Completely free with no watermark and no sign-up required.
- Fast — drop your image, get the result in seconds. No queues, no waiting.
Supported formats
This tool accepts JPG, PNG, WebP, HEIC as input and gives you a upscaled image as output. Files are processed in seconds and never stored — we keep nothing once you have your result.
How on-device upscaling works
When you enlarge an image, the software has to fill in pixels that don't exist in the original. This tool does that with high-quality bicubic-style resampling built into your browser's canvas, which interpolates smoothly between existing pixels instead of blowing each one up into a hard square. The result is a larger image with clean edges and gradual transitions rather than the blocky, pixelated look of a crude stretch.
It's honest about its limits: upscaling improves how an image is scaled, not how much information it contains. A sharp original enlarged 2× looks great; a tiny, already-blurry image enlarged 4× will be bigger but still soft. For the best outcome, always start from the highest-resolution version you have.
Enlarge without uploading your photo
Most online upscalers send your image to a server, run it through a model there, and keep a copy for some retention window. This one is different: the entire process happens on your device, so there's no upload, no queue and no privacy trade-off. It's faster for a single image and safe for pictures you'd never want on someone else's server.