Free Image Upscaler Online — 2×, 4×, 8× No Watermark

Upscale images free without losing quality. 2×, 4×, 8×, an exact size like 4K, or print-ready at 300 DPI for A4, photos and posters — with an AI detail control for natural-looking faces. 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.

Image never leaves your browser
⚡ Batch · 8× free · No watermark
Drop your images here
or click to browse — up to 10 at once, or paste with Ctrl/⌘ + V
PNG JPG WebP GIF BMP
No image handy?
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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

Print & posters Print on demand Logo restoration Laser engraving App icons & UI Old photo restoration Web & social media E-commerce product images
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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.
How do I upscale an image to 4K?
Open the image, then choose “4K · 3840 px” in the size menu. The upscaler picks the right AI scale and resizes to exactly 3840 pixels on the long side. Full HD, 8K and any custom width work the same way.
How do I upscale an image for printing at 300 DPI?
Choose a print size such as A4, US Letter, 8×10 in or a 24×36 in poster. The image is enlarged to the pixels needed for a sharp print at 300 DPI, and 300 DPI is written into the PNG or JPEG so print shops, Etsy, Redbubble and Amazon KDP read it correctly. The tool also shows how big each result prints.
The upscaled faces look too smooth or plastic — what can I do?
Lower the AI detail slider. It blends the AI result with a faithful classic enlargement, so skin and fine textures look natural while edges stay sharp. Changing it is instant — the AI does not need to run again.
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).
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