diff --git a/make-pages/Info.hs b/make-pages/Info.hs
index 357983b..c1b6a3f 100644
--- a/make-pages/Info.hs
+++ b/make-pages/Info.hs
@@ -1,6 +1,8 @@
 {-# OPTIONS_GHC -Wno-orphans #-}
 module Info
   (Info (..), Artist (..), Image (..), Link (..),
+   GalleryInfo (..), GalleryFilters, Who (..),
+   readWho, matchWho, matchNsfw, matchFilters,
    -- ** Reexports
    Day (..), Text)
 where
@@ -11,6 +13,7 @@ import Control.Applicative
 import Data.Foldable (find)
 import qualified Data.Map.Strict as Map
 import Data.Maybe (isJust, isNothing)
+import Data.String (IsString)
 import Data.Text (Text)
 import qualified Data.Text as Text
 import Data.Time.Calendar (Day (..))
@@ -98,6 +101,63 @@ instance FromYAML Link where
   parseYAML = labelledOptNsfw Link "url" "url"
 
 
+data GalleryInfo =
+  GalleryInfo {
+    prefix   :: !FilePath,
+    name     :: !Text,
+    filters  :: !GalleryFilters,
+    ordering :: !Int -- sorted by @ordering@ on gallery list page
+  }
+  deriving (Eq, Show)
+
+data GalleryFilters =
+  GalleryFilters {
+    nsfw :: Maybe Bool,
+    who  :: Who
+  }
+  deriving (Eq, Show)
+
+data Who = Mine | NotMine | All deriving (Eq, Show)
+
+
+matchNsfw :: Maybe Bool -> Info -> Bool
+matchNsfw Nothing     _ = True
+matchNsfw (Just nsfw) i = #allNsfw i == nsfw
+
+readWho :: (IsString str, Eq str, Alternative f) => str -> f Who
+readWho "mine"     = pure Mine
+readWho "not-mine" = pure NotMine
+readWho "all"      = pure All
+readWho _          = empty
+
+matchWho :: Who -> Info -> Bool
+matchWho Mine    = #mine
+matchWho NotMine = #notMine
+matchWho All     = const True
+
+noFilters :: GalleryFilters
+noFilters = GalleryFilters {nsfw = Nothing, who = All}
+
+matchFilters :: GalleryFilters -> Info -> Bool
+matchFilters (GalleryFilters {nsfw, who}) i =
+  matchNsfw nsfw i && matchWho who i
+
+
+instance FromYAML GalleryInfo where
+  parseYAML = YAML.withMap "gallery info" \m ->
+    GalleryInfo <$> m .:  "prefix"
+                <*> m .:  "name"
+                <*> m .:? "filters"  .!= noFilters
+                <*> m .:? "ordering" .!= 0
+
+instance FromYAML GalleryFilters where
+  parseYAML = YAML.withMap "gallery filters" \m ->
+    GalleryFilters <$> m .:? "nsfw"
+                   <*> m .:? "who" .!= All
+
+instance FromYAML Who where parseYAML = YAML.withStr "who" readWho
+
+
 data Pair a b = Pair !a !b
 
 instance (FromYAML a, FromYAML b) => FromYAML (Pair a b) where
diff --git a/make-pages/Options.hs b/make-pages/Options.hs
index cbd884c..c267673 100644
--- a/make-pages/Options.hs
+++ b/make-pages/Options.hs
@@ -31,20 +31,6 @@ data ModeOptions =
     }
   deriving Show
 
-data Who = Mine | NotMine | All deriving (Eq, Show)
-
-
-readWho :: String -> Maybe Who
-readWho "mine"     = Just Mine
-readWho "not-mine" = Just NotMine
-readWho "all"      = Just All
-readWho _          = Nothing
-
-matchWho :: Who -> Info -> Bool
-matchWho Mine    = #mine
-matchWho NotMine = #notMine
-matchWho _       = const True
-
 
 optionsParser :: ParserInfo Options
 optionsParser = globalOpts `info` mainInfo where