How to upscale an image
Upload your image, choose 2× or 4×, and hit Upscale. Your browser enlarges the image with the highest-quality smoothing available, then you download the result as a PNG. Everything happens on your device.
When is upscaling useful?
- Thumbnails & social posts — make a small logo big enough for YouTube or Instagram
- Printing — enlarge a photo before printing so it stays sharp
- Old screenshots — blow up a tiny screenshot so text stays readable
Privacy
Your image never leaves your browser. No servers, no accounts, no watermarks — 100% free.
Tips for Best Upscaling Results
One honest thing first: this is browser-based upscaling, not AI upscaling. It enlarges your image using your browser's highest-quality smoothing — it does not invent new detail the way AI upscalers do. It's fast, private, and free, which makes it perfect for prints, thumbnails, and social posts. Here's how to get the most out of it:
- Start with the best source you can. Upscaling stretches the pixels you already have, so a clean original gives a clean result. A crisp photo will always look better than a grainy screenshot-of-a-screenshot.
- Pick 2× for photos, 4× for tiny graphics. 2× is the sweet spot for camera photos and social images. Save 4× for small logos, icons, and old screenshots where you just need things readable — on photos, 4× can look a little soft because the tool smooths rather than adds detail.
- Don't expect miracles from very pixelated images. If the source is heavily compressed or tiny, smoothing can only do so much. It will still look cleaner than the original, but it won't turn a 100-pixel thumbnail into a poster print.
- Watch the 8000-pixel limit. Results are capped at 8000 pixels on the longest side so your browser stays fast and stable. If a 4× upscale gets blocked, your source is already big enough that 2× is plenty — or just download the 2× version.
- Know why 4× looks smooth. The tool enlarges 2× and then 2× again instead of jumping straight to 4×, and that two-step pass keeps edges noticeably cleaner.
- Plan for bigger files. Your result downloads as a PNG, which preserves quality but can get heavy — especially after 4×. If the file is too large to post or share, run it through our free image compressor afterwards.
Related Free Tools
Combine this upscaler with our other image tools to finish the job:
- Image Resizer — after upscaling, resize to exact dimensions so your image fits YouTube, Instagram, or print specs perfectly.
- Image Compressor — upscaled PNGs get big fast; compress after upscaling to shrink the file size without visible quality loss.
Image Upscaler FAQs
What's the maximum enlargement?
You can upscale 2× or 4×, and the result can't exceed 8000 pixels on any side — a limit that keeps the tool fast and your browser stable. If you hit the cap, 2× will usually be plenty.
Does this tool use AI?
No — and that's on purpose. It uses your browser's highest-quality smoothing (canvas interpolation), with a two-step pass for 4× enlargements. It makes small images bigger and cleaner for prints, thumbnails, and posts, but it won't invent detail the way AI upscalers do.
Which image formats can I upscale?
You can upload PNG, JPG, WebP, BMP, or GIF files. Your enlarged image always downloads as a PNG to keep the quality intact.