How to post on instagram from pc

[New Condo launch]

Hi I want to post on instagram using my pc Can you help me?

 

[rgd1101]

login to instagram. upload

 

[New Condo launch]

login to instagram. upload

Already I have tries Don't show any upload photo or post option.Before I have tries gramblr app but still now not working..☺ it's says
500 - Internal Server Error
Internal Server Error
Internal error information:
Could not initiate the conversion tool. Please unzip the archive at http://gramblr.com/extras.zip to the folder C:\ProgramData\Gramblr\ and see that your antivirus or firewall is not blocking Gramblr
any solution fix this problem or any alternate method upload photo on instagram?

Thanks

 

[rgd1101]

why would use use a 3rd app?

 

[New Condo launch]

why would use use a 3rd app?

Others guys said it's easy to use post photo on instagram from Pc But still now not working.!!