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ScanMaster

Image Upscaler

Beta

Enlarge images up to 4× with high-quality resampling.

High-quality canvas resampling — genuine super-resolution (AI upscaling) needs a server ML model and is on the roadmap. Upscale results are smooth, not 'hallucinated detail'.
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About Image Upscaler

The job of Image Upscaler is narrow on purpose: enlarge images up to 4× with high-quality resampling. It takes JPG, JPEG, PNG and 9 more and produces JPG, JPEG, PNG, WEBP. What it does today: high-quality canvas resampling — genuine super-resolution (AI upscaling) needs a server ML model and is on the roadmap.

Useful when the job is editing a picture one job at a time and you would rather not install software, join a queue or hand the file to a stranger.

How to use Image Upscaler in 3 steps

  1. Drop the picture on the page — JPG, JPEG, PNG and 9 more works here, up to 100 MB.
  2. Set the enlargement factor.
  3. Press Upscale and download the result in whichever of JPG, JPEG, PNG, WEBP suits you.

What you get with Image Upscaler

  • Accepts JPG, JPEG, PNG and 9 more in one go
  • Output in JPG, JPEG, PNG, WEBP
  • Honest scope: high-quality canvas resampling — genuine super-resolution (AI upscaling) needs a server ML model and is on the roadmap.
  • Runs in your browser — the file is never uploaded
  • Free to use, with no signup and no account
  • No watermark or logo added to your output
  • Works on desktop and mobile, no install

Image Upscaler: questions

Will I notice a quality difference?
Re-encoding always costs something, so start at the lighter setting and only push further if the size is still wrong. The before-and-after figures on the page are the honest way to decide.
Is this free, or free until it asks for a card?
Free, with no upsell behind it: no account to create and no file-count quota that appears halfway through a job.
What can't Image Upscaler do?
High-quality canvas resampling — genuine super-resolution (AI upscaling) needs a server ML model and is on the roadmap. Upscale results are smooth, not 'hallucinated detail'. That limit is stated on the page and in the alert above the tool, not buried in a footnote.
Which file types does Image Upscaler accept?
The drop area takes JPG, JPEG, PNG and 9 more. Files are read from your device in the browser, so the format has to be one a browser can decode — that is why the accepted list on this page is finite and honest rather than "everything".