Chinese internet giant Tencent Holdings Ltd launched "mini apps" on Monday, which let users interact with app-like services within its instant messaging app WeChat, without having to download and install them.

Users just need to scan the QR code or search from their WeChat accounts to open these apps, where they could book tickets or do shopping, Tencent said.

They can exit the apps easily without downloading them, these apps won't disturb users, such as by sending notifications and subscription messages, according to Tencent.