What this does differently
A target picker rather than a factor: choose 1280 × 720, 1920 × 1080 or 2560 × 1440 and the factor is computed for each photo from its own size and shape. Fit means the whole photo is kept — no crop to 16:9 and no stretch. For 3840 × 2160 and above, the 4K image upscaler page says how much of the result a model can actually draw.
What it will not do
- It never crops to 16:9 or stretches a photo to fill the box.
- It does not shrink a photo already larger than the box.
- Messaging apps re-compress photos; send the file as a document to keep it intact.
Questions about this
What does 'HD' mean here?
A screen size: HD is 1280 × 720 pixels and Full HD is 1920 × 1080. The photo is enlarged until one side meets that box; the other side follows its own shape.
Will it crop my photo to 16:9?
No. A portrait photo stays portrait: it fits inside the box with its height meeting the box's height, and nothing is cut off or stretched.
My photo is already bigger than 1080p. What happens?
Nothing is done to it: it is kept as it is, and its row says so.
Does converting to HD make it sharper?
It makes it bigger. Whether the new pixels carry real detail depends on the engine and the photo, and the detail check says which.
Next on this site
- 4K image upscalerFit to 3840 × 2160, with 8K on desktop — and a plain statement of how much of it the model drew.
- Increase image resolutionState the pixels you need — long edge, both edges, a box or megapixels — and the factor is solved per photo.
- Upscale imageOne photo, 2× to 4×, previewed instantly; the AI pass is offered with its exact download size.
- Bulk image upscalerA folder in, one archive out — with the wait measured on this machine before it starts.
