Apologies, have been busy with work and personal stuff hence could not write posts for a long time and I am back:)

Suppose you want to copy all the fields in an object and put them on to excel, you can use the following chrome extension:

https://chrome.google.com/webstore/detail/columncopy/lapbbfoohlcmlbdaakldmmallcbcbpjb?hl=en

Example:

Suppose, you want to copy all the custom fields from Order object, you can follow the below steps to do so:

1. Go to Setup -> Orders -> Fields
2. Navigate to see Order Custom Fields & Relationships section
3. Right click and select Copy entire table from ColumnCopy option. It will highlight the table that is getting copied, once you select this option.

4. Then open excel and paste

Hope this tip will be useful!

P.S: you have an option to only the column too by selecting Copy this column option.