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2. The salted fish APP is watermarked by default. As long as the picture is uploaded, the system will automatically add a watermark with the user ID to the user's picture after it is sent.
3. If you think that the watermark of salted fish is not conspicuous enough at the bottom of the picture, it is easy to be cut off, or that other people's watermarks are as featureless, you can also choose to use other apps and special retouching software to make personalized watermarks.