PIL to convert type and quality of image

Image upload is an important part of the server. The images can be in different formats and after applying certain javascript modifications, they can be changed to different formats. For example, when an image is uploaded after cropping in open event organizer server, it is saved in PNG format. But PNG is more than 5 times larger than JPEG image. So when we upload a 150KB image, the image finally reaching the server is around 1MB which is huge. So we need to decide in the server which image format to select in different cases and how to convert them.

Continue reading PIL to convert type and quality of image

How can you get an access to Instagram API?

unnamed.png

First of all you need to know that Instagram API uses OAuth 2.0 protocol. OAuth 2.0 provides a specific authorization flow for web apps, desktop apps and mobile apps. Instagram requires authentication before getting information from their API, but don’t be afraid it’s very simple.

Pre Requirements:

  • Created account in Instagram
  • Registered Client(You can create your own client here)

Instagram Developer Documentation.png

Requirements:

CLIENT_ID -79e1a142dbeabd57a3308c52ad43e31d
CLIENT_SECRET -34a6834081c44c20bd11e0a112a6adg1
REDIRECT_URI - http://127.0.0.1:8001/iCallback

You can get above information from https://www.instagram.com/developer/clients/manage/

CODE - You need to open page https://api.instagram.com/oauth/authorize/?client_id=CLIENT-ID&redirect_uri=REDIRECT-URI&response_type=code
https://api.instagram.com/oauth/authorize/?client_id=79e1a142dbeabd57a3308c52ad43e31d&redirect_uri=http://127.0.0.1:8001/iCallback&response_type=code

You will be redirected to

http://your-redirect-uri?code=CODE

In my case it looks like this:

http://127.0.0.1:8001/iCallback?code=2e122f3d76e8125b8b4982f16ed623c2

Now we have all information to get access token!

 curl -F 'client_id=CLIENT_ID'  
      -F 'client_secret=CLIENT_SECRET' 
      -F 'grant_type=authorization_code'  
      -F 'redirect_uri=REDIRECT_URI' 
      -F 'code=CODE'  https://api.instagram.com/oauth/access_token

if everything is ok you should receive

 { "access_token": "fb2e77d.47a0479900504cb3ab4a1f626d174d2d",
   "user": { "id": "1574083",
   "username": "rafal_kowalski",
   "full_name": "Rafal Kowalski",
   "profile_picture": "..." } } 

In Open Event we used it to get all media from instagram – to use it  as for example a background in an event details’ page

curl 'https://api.instagram.com/v1/users/self/media/recent/?access_token=ACCESS_TOKEN'