What "free" usually means
- Free and open source, on your computer. Upscayl is the best known: no account, no watermark, no limits, but it needs a reasonably capable computer and some patience, and it upscales rather than reshaping.
- Free tiers of paid web tools. Usually a handful of images on sign-up, often watermarked or capped in size. Fine to judge quality, not to print from.
- Free trials of paid desktop apps. Full quality for a limited time or with export limits.
- Free websites with ads. Quality varies widely, and many cap the output well below what a large print needs. Check what happens to your uploads before using one for family photos.
What matters once it is on paper
- Enough pixels for the size. A sharp 8×10 needs 2,400 × 3,000 pixels and a 16×20 on a wall about 2,400 × 3,000. A free tool capped at a small output can't get there, however good it looks on screen.
- No watermark. Obvious, but free tiers often add one that is faint on screen and plain on paper.
- Faces that still look like the person. Some upscalers smooth skin into wax; generative ones can change small features. Paper at arm's length shows both.
- The right shape. Most upscalers only make the photo bigger. If the print is a different shape, it still gets cropped at the lab, unless the tool can extend the scene to fit.
Free and paid options compared
From each tool's own site, checked 1 October 2026. Prices change, so check theirs before buying.
| Tool | Free option | Paid from |
|---|---|---|
| Topaz Gigapixel | Free option: None listed on the pricing page | Paid from: $149 a year, or $29 a month (Gigapixel desktop) |
| Upscayl | Free option: Yes, the whole desktop app | Paid from: Free (desktop); Upscayl Cloud from $24.99 a month |
| Let's Enhance | Free option: 10 credits on sign-up, watermarked and capped at 8 megapixels | Paid from: $12 a month for 100 images ($9 a month billed yearly) |
| Magnific | Free option: None listed on the pricing page | Paid from: $20 a month ($14.50 a month billed yearly) |
| Aiarty Image Enhancer | Free option: A free trial version | Paid from: $99 lifetime licence (sale price; $155 regular) |
| Resly AI | Free option: Not for pay per image; Resly Studio accounts start with 3 free images | Paid from: Pay per image, no subscription. See pricing |
The comparison pages go through each one in detail, including where each beats us.
Test any upscaler before you print
- 1
Upscale to the exact print size
Not "4×" or "2×": the pixels the print actually needs, so you are judging what will be printed.
- 2
Crop a piece with a face in it
Crop a 4×6-inch piece of the result, 1,200 × 1,800 pixels if it was made at 300 pixels per inch, around the most important face.
- 3
Print the crop at actual size
On a home printer, or as a single 4×6 at any lab. That piece of paper is exactly how sharp the big print will be, for the price of a 4×6.
Hold it at the distance the big print will be seen from. If it looks right there, the full print will too.