Online JSONP converter/wrapper

Question

I would like to fetch a source of file and wrap it within JSONP.

For example, I want to retrieve pets.txt as text from a host I don't own. I want to do that by using nothing but client-side JavaScript.

I'm looking for online service which can convert anything to JSONP.

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YQL

Yahoo Query Language is one of them.

http://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20html%20where%20url%3D"http://elv1s.ru/x/pets.txt"&format=json&callback=grab

This works if URL is not blocked by robots.txt. YQL have respect to robots.txt. I can't fetch http://userscripts.org/scripts/source/62706.user.js because it blocked via robots.txt.

http://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20html%20where%20url%3D"http://userscripts.org/scripts/source/62706.user.js"&format=json&callback=grab

"forbidden":"robots.txt for the domain disallows crawling for url: http://userscripts.org/scripts/source/62706.user.js"

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So I'm looking for another solutions.

Answer 1

I built jsonpwrapper.com.

It's unstable and slower than YQL, but it doesn't care about robots.txt.

Answer 2

Here's another one, much faster, built on DigitalOcean & CloudFlare, utilizing caching et al: http://json2jsonp.com