Free tool
Watermark your work before you post it
Add your name across your artwork — one large mark, or tiled so a crop cannot remove it. It happens on your own device; the picture is never uploaded.
…or drop it here, or paste from the clipboard.
Worth being straight about what this buys you: a watermark deters casual right-click-and-repost, and it does not stop anyone determined — modern software removes them. Turned down far enough it also stops surviving a screenshot or a re-encode, which makes it decoration rather than protection.
The other four
How big can you print it?
Find the biggest clean print an image will give you, and the frame it fits.
Open itWill this photo work?
Check a photo is sharp and big enough before you commission anything.
Open itWhat does your photo give away?
See the camera, time and GPS hidden in a photo — then strip it out.
Open itTurn a picture into a cut file
Trace a picture into an SVG with real path nodes a cutter can follow.
Open it