upscayl upscale mac/windows/linux easy
free ai upscaler you run on your own computer. drop an image in, pick a model, done.
printer's tip: try a couple of models. the one that looks sharpest on screen isn't always the best in print. look at skin and skies.
upscayl.org ↗chainner upscale mac/windows/linux advanced
node-based tool for chaining upscale models. powerful, more to learn.
printer's tip: upscale in two smaller steps instead of one big jump. fewer weird textures.
chainner.app ↗gimp set size & ppi mac/windows/linux easy
free photo editor. great for setting print size and ppi.
printer's tip: image › print size changes the ppi without touching your pixels
www.gimp.org ↗photopea edit in the browser easy
photoshop-like editor that runs in your browser. no install.
printer's tip: use image › image size with resample off to set ppi for your print.
www.photopea.com ↗ know a good one?send me a tool you like. i try it before it goes on the list. suggest a tool →