některé vyhledávače si definují vlastní formát, ve kterém jim jde dodávat data k indexování
tato data jsou poskytována paralelně k normálnímu webovému obsahu
využívá např. Zbozi.cz a Google Base
<feed xmlns="http://www.w3.org/2005/Atom" xmlns:g="http://base.google.com/ns/1.0"> <title>Jiříkovy recepty</title> <link rel="self" href="http://www.example.org"/> <updated>2006-06-11T18:30:02Z</updated> <author> <name>Jirka Kosek</name> </author> <id>http://example.org/recepty/2008/09/01</id> … <entry> <title>Classic Apple Pie</title> <g:calories>150</g:calories> <g:cholesterol>25</g:cholesterol> <g:cooking_time>30</g:cooking_time> <g:course>main entree</g:course> <g:cuisine>Italian</g:cuisine> <summary>Basic apple pie recipe you can make with your children.</summary> <g:expiration_date>2006-12-20</g:expiration_date> <g:fiber>9</g:fiber> <id>1</id> <g:image_link>http://www.example.com/image1.jpg</g:image_link> <link href="http://www.example.com/item1-info-page.html"/> <g:main_ingredient>tofu</g:main_ingredient> <g:meal_type>breakfast</g:meal_type> <g:preparation_time>30</g:preparation_time> <g:protein>25</g:protein> <g:saturated_fat>3</g:saturated_fat> <g:servings>6</g:servings> <g:sodium>1010</g:sodium> <g:total_carbs>22</g:total_carbs> <g:total_fat>8</g:total_fat> </entry> … </feed>