There are several angular pipe the main task of pipe is to take data and transformed into the suitable form to show in the template this is done in html template there are several types of pipes like:
1. uppercase or lowercase
{{propertyName | uppercase |lowercase}}
2. datepipe like shortDate, short,shortTime
3. slice : this is to say that where to start the string and where to end to display the desired result.
5. number: this pipe is to show that how many number is should shown before decimal and after decimal.
6.percentage: this pipe is used to show the data to dispaly in percentage like data is .025 shows 25 percent if percentage pipe is used.