@raj_dev. Welcome to our community! To help you get the best possible answer, I have tagged our NiFi experts @MattWho @steven-matison @cotopaul @SAMSAL who may be able to assist you further.
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@raj_dev This may be a better question to the OSS NiFi Community. There is a mailing list and Slack (chat) you can find here:
At Cloudera we provide our own branded NIFI UI. You would need to do similar. This is a very complicated task that requires that you build your own binaries w/ the modifications to the UI.
Before you go so deep as to build a new UI w/ your logo, be sure to have a look at Nifi of the Future, where you deploy nifi flows as a function in any cloud provider, or nifi on kubernetes. In this future state no one sees or touches the nifi UI. You can find more about Cloudera DataFlow here:
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