There's a really cool, badly understood feature in Safari since Yosemite: the ability quickly to search within specific sites right from Safari's search bar.
How it works is this: let's say you go to amazon.com and search for 'MacBook'. What actually happens is that you're redirected to a new URL that looks something like this: http://www.amazon.com/s/ref=nb_sb_noss_2?url=search-alias%3Daps&field-keywords=macbook.
Now, what Safari can do is look at that URL and work out that it's a search and, just like you could, realize that if you wanted to search Amazon for 'iMac' instead of 'MacBook', then rather than waiting for the amazon.com homepage to appear before typing "iMac" into the search field and waiting for the results to load, Safari could send us straight to http://www.amazon.com/s/ref=nb_sb_noss_2?url=search-alias%3Daps&field-keywords=imac.
See that last word in the URL change? To make that happen, all you have to do is type 'amazon iMac' into Safari's search bar and then you'll see one of the options is 'Search amazon.com for imac'; click on this, and you'll go straight to the results.
You have to do a search, any search in a site first before Safari can recognize the syntax for a search string, but when you do, you'll see the sites listed in the Search tab of Safari's preferences.
You can even type just a part of the target site's URL. So long as you've searched once on Wikipedia, for example, you can type 'wiki apple' and you'll see the option to search Wikipedia for "apple".
How it works is this: let's say you go to amazon.com and search for 'MacBook'. What actually happens is that you're redirected to a new URL that looks something like this: http://www.amazon.com/s/ref=nb_sb_noss_2?url=search-alias%3Daps&field-keywords=macbook.
Now, what Safari can do is look at that URL and work out that it's a search and, just like you could, realize that if you wanted to search Amazon for 'iMac' instead of 'MacBook', then rather than waiting for the amazon.com homepage to appear before typing "iMac" into the search field and waiting for the results to load, Safari could send us straight to http://www.amazon.com/s/ref=nb_sb_noss_2?url=search-alias%3Daps&field-keywords=imac.
See that last word in the URL change? To make that happen, all you have to do is type 'amazon iMac' into Safari's search bar and then you'll see one of the options is 'Search amazon.com for imac'; click on this, and you'll go straight to the results.
You have to do a search, any search in a site first before Safari can recognize the syntax for a search string, but when you do, you'll see the sites listed in the Search tab of Safari's preferences.
You can even type just a part of the target site's URL. So long as you've searched once on Wikipedia, for example, you can type 'wiki apple' and you'll see the option to search Wikipedia for "apple".