Are these mushroom stickers free?

Yes. All stickers are free to download and use, including commercially, under CC BY 4.0 — just credit Mushroom Sticker.

What format are the stickers?

Transparent PNG, about 1024 px, with a white sticker border and soft shadow. Ready for notes, journals, slides, social posts or printing.

No. They are illustrations. Never decide whether a mushroom is edible from a picture.

Realistic mushroom stickers drawn from real photos — not cartoons. Every sticker is a transparent PNG with a white border, free to download and use.

Oudemansiella mucida

1
We start from real photos of the mushroom and study its identifying features.
2
The sticker is drawn from that photo, keeping the features that identify the species: cap, gills or pores, stem and base.
3
A separate reviewer scores it against the photo, feature by feature. Below 80 out of 100, it gets redrawn.

Are these mushroom stickers free?: Yes. All stickers are free to download and use, including commercially, under CC BY 4.0 — just credit Mushroom Sticker.
What format are the stickers?: Transparent PNG, about 1024 px, with a white sticker border and soft shadow. Ready for notes, journals, slides, social posts or printing.
Can I use these stickers to identify mushrooms?: No. They are illustrations. Never decide whether a mushroom is edible from a picture.