Attribution Guidelines for Yahoo APIs

Yahoo makes the world's daily habits inspiring and entertaining. Our most compelling daily habit APIs are available to third-party developers through the Yahoo Developer Network (YDN). When you build a product using Yahoo APIs, these guidelines will allow users to know that the content they are viewing is coming from Yahoo, and that a click of the area would take them to a Yahoo experience.

Logo Requirements

Include an appropriate "powered by Yahoo" logo from below along with any data from a Yahoo API.

For white/light colored backgrounds

• 
  Use the code below to render the above logo.
  <a href="https://www.yahoo.com/?ilc=401" target="_blank"> <img src="https://poweredby.yahoo.com/poweredby_yahoo_h_purple.png" width="134" height="20"/> </a>

  *For retina displays, replace the URL with https://poweredby.yahoo.com/poweredby_yahoo_h_purple_retina.png

• 
  Use the code below to render the above logo.
  <a href="https://www.yahoo.com/?ilc=401" target="_blank"> <img src="https://poweredby.yahoo.com/poweredby_yahoo_v_purple.png" width="72" height="31"/> </a>

  *For retina displays, replace the URL with https://poweredby.yahoo.com/poweredby_yahoo_v_purple_retina.png

For dark colored backgrounds

• 
  Use the code below to render the above logo.
  <a href="https://www.yahoo.com/?ilc=401" target="_blank"> <img src="https://poweredby.yahoo.com/poweredby_yahoo_h_white.png" width="134" height="20"/> </a>

  *For retina displays, replace the URL with https://poweredby.yahoo.com/poweredby_yahoo_h_white_retina.png

• 
  Use the code below to render the above logo.
  <a href="https://www.yahoo.com/?ilc=401" target="_blank"> <img src="https://poweredby.yahoo.com/poweredby_yahoo_v_white.png" width="72" height="31"/> </a>

  *For retina displays, replace the URL with https://poweredby.yahoo.com/poweredby_yahoo_v_white_retina.png

Linking to Yahoo

All Yahoo logos must link to https://www.yahoo.com/?ilc=401 and content from Yahoo APIs must link to an appropriate page on the Yahoo network (available within the API response). For example, when you use data from the Yahoo Weather API, a URL to weather.yahoo.com will be provided in the response. Your content which displays that weather information must link to the provided URL.

If there is no appropriate yahoo.com URL present in the API response, you must link your content to https://www.yahoo.com/?ilc=401.

Example

• Weather conditions link to
  http://us.rd.yahoo.com/dailynews/rss/weather/San_Francisco__CA/*http://weather.yahoo.com/forecast/USCA0987_c.html
• Powered by Yahoo links to https://www.yahoo.com/?ilc=401