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Free tool

Image upscaler

Twice or four times the size, with the texture rebuilt rather than blurred.

  • Scale2× · 4×
  • Output up to4096²16.8 MP
  • Model time, 1024² to 4096²0.98s
  • Price1IC/image

Get an API keyThe API

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Drop an image here or click to choose
Upload an image or pick an example, then press Upscale. Drag the handle to compare before and after.
Request as cURL
curl -X POST 'https://api.iapp.co.th/v3/store/image-generation/image-upscaler/upscale' \
  -H 'apikey: YOUR_API_KEY' \
  -F 'file=@photo.jpg' \
  -F 'scale=4' -F 'model=photo' -F 'output_format=png'

What it does​

  • Rebuilds fine detailEdges, texture and lettering are reconstructed, not smoothed over.
  • Photo or illustrationPick the content type: photo, illustration, or a fast mode.
  • Common formatsJPEG, PNG or WebP up to 10 MB in; PNG, JPEG or WebP out, transparency kept.

Limits​

  • Detail the source never had is invented, not recovered. Do not use the result as evidence of what a small original showed.
  • Motion blur and out-of-focus areas stay soft.
  • Images are processed in memory and returned; nothing is kept.