StickerFromPhoto is a free browser tool that turns a photo into a sticker. It takes JPG, JPEG, PNG or WEBP files up to 15 MB. Pick a thin, medium or thick outline and a color, add optional text, and choose a transparent or solid background. It exports a 1080x1080 PNG.
No account is needed and photos are processed locally in your browser. Background removal is a simple edge-color mask, so it works best on photos with plain backgrounds.
ZiFeng built a simple browser tool so anyone can turn a photo into a shareable sticker without design software.