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  • Photo Sharpener
  • Image Upscaler
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Sharpen photos privately in your browser, or upscale them with AI.

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  • Photo Sharpener
  • Image Upscaler
  • Benchmark
  • Pricing
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Benchmark

Real test images, real outputs. Every case lists the original file, each output, the exact settings, the test date and what went wrong.

How we test

  1. We only use images we own or have the right to publish.
  2. Each case compares the original, Local Sharpen and AI Upscale (2× and/or 4×).
  3. We publish full-resolution downloads of the original and every output, not cropped thumbnails.
  4. We record the algorithm or model version, parameters and test date. We never add a separate face-restoration step.
  5. We describe visible improvements and visible failures. We do not give an overall “fidelity score”.

A difference image can help you find what changed, but it cannot prove that reconstructed detail is real. Judge the full-resolution files yourself.

What each category checks

CategoryWhat to look for
PortraitsEyes, teeth, hair and skin texture; identity changes
Small text and numbersLetters and digits that change or become unreadable
Product texturesFabric weave, stitching, labels and colour shifts
Logos and line artEdge halos, wobbly lines, altered shapes
Transparent PNGsWhite or black fringes, lost semi-transparent edges
Heavily compressed imagesAmplified JPEG blocks and invented textures

Results

The first test set is being prepared. Results will appear here with downloadable originals and outputs.