Image Upscaler — Enlarge Photos 2x / 4x in Your Browser
Load a small image, pick 2x or 4x, and download a larger, sharpened version. Everything runs locally — the photo is never uploaded.
Quick answer: Upscale images 2x or 4x online free — high-quality browser-side enlargement with sharpening. Photos never leave your device; no signup, no watermark, no file-size games.
How to use
- Load the image (JPG/PNG/WebP).
- Choose 2x or 4x enlargement.
- Download the upscaled PNG — compare and keep what looks best.
About this tool
Need a bigger version of a small photo for a post, a print or a thumbnail? This upscaler enlarges images 2x or 4x using high-quality browser interpolation followed by a sharpening pass that restores edge definition. To stay honest: this is classical image processing, not a generative AI model — it will not invent missing detail, but it produces clean, larger files without the blur that naive stretching gives you. And unlike 'free AI upscaler' sites, your photo never leaves your device. Your file never leaves this page — everything runs in your browser, there is no upload endpoint on this site, and the file is dropped from memory when you close the tab.
FAQ
Is my photo uploaded?
Is this AI upscaling?
What's the output format?
Why 4x looks softer?
Maximum size?
Can it fix blur?
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Your rating stays in this browser (local storage) — nothing is sent to any server.
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