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So, I see that we can use -r range in curl. Is there any way that instead of downloading a complete image from the URL(someone else's), I could just use lower bandwidth and get lower resolution image, by reconstructing the parts downloaded by curl?
With curl it's impossible. Use opera turbo mode which exactly does what you want. http://help.opera.com/Mac/11.60/en/turbo.html
– Ipor Sircer – 2016-11-21T06:58:55.407I don't believe it's possible. Opera works by utilising their own server-side compression proxy, I believe chroms offers a similar add-on using google servers. – user657451 – 2016-11-21T08:37:25.410