Free Image Upscaler Online — 2×, 4×, 8× No Watermark
Upscale images free without losing quality. 2×, 4×, or 8× — no upload, no watermark, no signup. Batch upscale up to 10 images at once. PNG, JPEG, WebP output. 100% private — runs entirely in your browser.
100% Private
Every image is processed in your browser. Nothing is uploaded — no server, no storage, no tracking.
Free Batch
Drop up to 10 images, upscale all at once, download as ZIP. Every competitor paywalls this feature.
Real AI Upscaling
Real-ESRGAN rebuilds sharp edges and detail instead of just stretching pixels. GPU-accelerated in Chrome and Edge; Classic and Pixel art modes for text and sprites.
8× Scale Free
A 500×500 image becomes 4000×4000. No other free browser tool unlocks 8× without a paid plan.
Free Image Upscaler — No Upload, No Watermark, No Limits
Every major upscaler either uploads your file to a server, watermarks the output, or caps you at a handful of free conversions per day. This tool does none of that. The AI model runs entirely inside your browser — your image never leaves your device. No daily limits, no account, no watermarks.
When to Upscale an Image
Frequently Asked Questions
- Is this image upscaler really free?
- Yes, completely free. No account required, no watermarks, no daily caps. Upscale as many images as you want at any scale.
- Does my image get uploaded to a server?
- No. The AI model runs in your browser — on your graphics card when available — so your images never leave your device.
- What is the maximum upscale factor?
- 8× — free. A 500×500 image becomes 4000×4000. No other free browser tool offers this without a paid plan.
- Can I upscale multiple images at once?
- Yes. Drop up to 10 images — each is upscaled in turn automatically and you can download them all as a ZIP.
- Which enhancement should I choose?
- AI Enhance suits photos, art and illustrations. AI Max detail uses a larger model for the finest detail (needs a GPU-enabled browser such as Chrome or Edge). Classic is instant and best for screenshots and text, where AI can reshape letters. Pixel art keeps hard pixel edges for sprites and icons.
- What output formats are supported?
- PNG (lossless, ideal for logos and graphics with transparency), JPEG (smaller file, best for photos), and WebP (modern format, smallest file size).