is a numerical range field. Four qualifiers, gte (greater than or equal), lte (less than or equal), gt (greater than), and lt (less than), can be applied to the desired value.

Example: to find images with a score greater than 100, you would use score.gt:100 .

is a date/time field. It accepts a tweaked subset of the ISO 8601 standard, as well as relative dates (X minutes/hours/days/months/years ago). Four qualifiers, gte (greater than or equal), lte (less than or equal), gt (greater than), and lt (less than), can be applied to the desired value.

Example: to find images created before 2013, you would use created_at.lt:2013 .

is a literal field. You can apply apply a wildcard * as a substitute for zero or more characters.

Example: to find images from DeviantArt, you would use source_url:*deviantart.com* .