Upscale Image
Make images bigger and sharper — 2× or 4× — with an AI super-resolution model that runs in your browser.
Quick answer: Make images bigger and sharper — 2× or 4× — with an AI super-resolution model that runs in your browser.
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Frequently asked questions
- How do I upscale an image?
- Drop one or more photos, pick 2× or 4×, and click Upscale. The first run downloads a small AI model; after that, the bigger versions are ready in seconds.
- Will the result look as sharp as the original?
- ESRGAN reconstructs plausible detail, so edges, textures and small features look noticeably crisper than a plain stretch. It can't invent information that wasn't there, but it gets very close on photos and illustrations.
- Is this an AI upscaler?
- Yes. We use ESRGAN-slim, an open-source super-resolution neural network, served via TensorFlow.js. The model runs entirely in your browser — nothing is sent to a server.
- What factor should I pick?
- 2× is the fastest and works on most devices. 4× takes longer (and more memory) but gives you a much larger canvas — great for posters, prints and high-DPI displays.
- Can I batch-upscale many images?
- Yes. Drop a folder and they're processed one at a time (the model uses a lot of GPU memory). Download them individually or as a ZIP.
- Will my photos be uploaded?
- No. Upscaling runs entirely in your browser — your photos stay on your device, and even the AI model itself is cached locally after the first download.
- What input formats are supported?
- JPG, PNG and WebP. Output is JPG for JPG inputs and PNG for PNG or WebP inputs (so transparency is preserved when present).
- What if my browser can't run the model?
- We use WebGL for GPU acceleration, with a CPU fallback for older devices. If both fail (rare), the tool tells you and you can stick with the resize tool instead.
- Does it work on mobile?
- Yes — though very large photos at 4× use a lot of memory. On phones, prefer 2× or start with images smaller than ~1024×1024.
- Is the upscaler free?
- Yes. Free, no signup, no watermark, no per-image fee.