Since Chrome apps are now being deprecated. Download postman from https://dl.pstmn.io/download/latest/linux

Although I highly recommend using a snap

`sudo snap install postman`

#### Installing Postman

```sh
tar -xzf Postman-linux-x64-5.3.2.tar.gz
```
If any version is installed before, remove it.
```sh
sudo rm -rf /opt/Postman
```
Move Postman
```sh
sudo mv Postman /opt/Postman
```
Create a symbolic link
```sh
sudo ln -s /opt/Postman/Postman /usr/bin/postman
```
Create a desktop file
```
cat > ~/.local/share/applications/postman.desktop <<EOL
[Desktop Entry]
Encoding=UTF-8
Name=Postman
Exec=postman
# Before v6.1.2
# Icon=/opt/Postman/resources/app/assets/icon.png
Icon=/opt/Postman/app/resources/app/assets/icon.png
Terminal=false
Type=Application
Categories=Development;
EOL
```
Remove the tar:
```sh
rm Postman-linux-x64-5.3.2.tar.gz
```