der Sticker
sticker
A small adhesive label with an image, symbol, or text that can be stuck onto a surface.
Kinder lieben es, Sticker in ihre Alben zu kleben.
Children love sticking stickers into their albums.

sticker
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sticker
A small adhesive label with an image, symbol, or text that can be stuck onto a surface.
Kinder lieben es, Sticker in ihre Alben zu kleben.
Children love sticking stickers into their albums.

'Sticker' is a word from English and is usually pronounced in an English way in German as well. It has become established especially in colloquial language for all kinds of adhesive stickers.
Mein Laptop ist voller Sticker von verschiedenen Konferenzen.
My laptop is full of stickers from different conferences.
You can usually tell whether a physical sticker or a digital image is meant from the verb. Physical stickers are 'geklebt' (stuck) or 'aufgeklebt' (stuck on), while digital stickers are 'geschickt' (sent) or 'gesendet' (sent).
Sie klebte einen Sticker auf ihr Notizbuch.
She stuck a sticker on her notebook.
When referring to physical stickers, typical verbs are 'sammeln' (to collect), 'einkleben' (to stick in), and 'aufkleben' (to stick on). They are often combined with places like 'Album' (album), 'Heft' (notebook), or 'Laptop' (laptop).
Viele Kinder sammeln Sticker von ihren Lieblingsfiguren in einem Album.
Many children collect stickers of their favorite characters in an album.
sticker
'der Aufkleber' and 'der Sticker' can both mean a small picture or text with an adhesive back. In this sense, they are almost the same. 'Aufkleber' sounds a bit more general and very normal in everyday language, for example on a notebook, car, or package. 'Sticker' is used especially often for colorful, modern, or decorative stickers. In addition, 'Sticker' can also be a digital image in a chat message. That is why the words can be confused: on paper they are often the same, but in a chat you only say 'Sticker', not 'Aufkleber'.

Maria schickt ihrer Freundin einen lustigen Sticker im Chat.
Maria sends her friend a funny sticker in the chat.
Auf dem Koffer klebt ein Aufkleber mit meinem Namen.
There is a sticker with my name on the suitcase.