Recently, since the business involves long-press identification of small programs to add groups, follow official accounts, etc., the support situation in various scenarios, the official document does not have any specific instructions, so some tests have been done as a whole. The test results are as follows. If there are some inaccurate or unverified situations, you are welcome to correct and supplement~
All kinds of QR codes and small program codes in the applet, in various scenarios, long press the identification support to verify the results (verification time: 2021-10-21)
2022-6-8 update:
image+shop long press, wx.previewImage support official account QR code long press recognition~