Install Postman Offline for Chrome

a. Download the post installation file
http://chromecj.com/web-development/2014-09/60/download.html
b. Unzip the file, change the Postman_v4.1.3.crx suffix from crx to rar and extract it
c. Enter On the far right of Chrome's address bar, select Extensions for More Tools, and after entering the page, first check the developer mode in the upper right corner.
d. Load the decompressed extension, select the folder you just decompressed, and click OK.
e. If a file type error occurs, go to the decompressed folder, delete the _ in front of the metadata, and click Retry.