GizmoBloom

Free image upscaler with AI

Make a small picture 2 or 4 times bigger and sharper with AI, for printing, T-shirts and KDP books. Free, with no sign-up. It runs in your browser: your picture is never uploaded.

How to upscale an image

  1. Choose your picture. A picture bigger than 1024 pixels is made smaller first: a phone cannot enlarge bigger ones.
  2. Choose × 2 or × 4 and press Make it bigger. The first time, the AI downloads (about 15 MB). On a phone it can take a few minutes.
  3. Press Save the picture (PNG). The tool also shows the size it prints at, at 300 DPI.

Made for sellers

  • AI pictures that are too small to print well
  • Clip art and drawings for KDP covers and pages
  • Designs for T-shirts, posters and stickers
  • Small product photos for your listings

Questions

Is this image upscaler free?

Yes: free, with no sign-up, no limit and no watermark.

How is it better than stretching the picture?

Stretching a picture makes it blurry. The AI redraws the edges and details as it enlarges, so the bigger picture stays sharp.

How big can the result be?

Up to 4 times 1024 pixels, so 4096 pixels: about 13.6 inches at 300 DPI. For bigger pictures and whole folders at once, use the GizmoBloom app's upscaler, which works offline.

Does it work on a phone?

Yes, in the browser. It is slower on a phone than on a computer: a large picture at × 4 can take a few minutes.

Is my picture uploaded?

No: the AI runs on your phone or computer, so your picture never leaves your device.

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