What is CORS policy ?

• CORS policy uses to prevent other domains to access your resource in the browser.
• In CORS policy you can whitelist your multiple domains, So only those emails can render the contents of your domain in browser
• You can also specify a particular Request Type in cors policy, e.g GET, POST, PUT, etc

For Example, You own example1.com and now you have image cdn on subdomain cdn.example1.com and you want only this cdn images url should be loaded example1.com only, other domains should not be able to render your links on their domain, In such case, CORS policy comes in action.

How to get corsEnabled link ?

• To get the corsEnabled link, you will have to parse corsEnabled=true query parameters in api request, This query parameter support almost all the endpoints
• Instagram’s original URL will be converted to our own domain, which doesn’t have CORS policy

How to render image/video ?

• corsEnabled link only be able to test using HTML img or video tag

E.g

How to allow user to download media via corsEnabled link ?

• You can use XHR request to download media file
• Below is the example code which demonstrates rendering and downloading media using corsEnabled link

https://jsfiddle.net/kirtanparmar/42Lvn7qm/8/
(Note: Update url in above example, As it can be expired after 7 days)