diff --git a/index/posts.mk b/index/posts.mk
index 4d530713..8324d633 100644
--- a/index/posts.mk
+++ b/index/posts.mk
@@ -21,8 +21,8 @@ metadata: post_search_json
 			'body', p.body,
 			'subject', t.title,
 			'ip', p.ip,
-			'user_agent', p.user_agent,
-			'referrer', p.referrer,
+			'user_agent', '',
+			'referrer', '',
 			'fingerprint', p.fingerprint,
 			'topic_position', p.topic_position,
 			'forum', f.short_name,
diff --git a/lib/philomena/artist_links/artist_link.ex b/lib/philomena/artist_links/artist_link.ex
index f79a872b..b64e0b13 100644
--- a/lib/philomena/artist_links/artist_link.ex
+++ b/lib/philomena/artist_links/artist_link.ex
@@ -13,8 +13,6 @@ defmodule Philomena.ArtistLinks.ArtistLink do
 
     field :aasm_state, :string, default: "unverified"
     field :uri, :string
-    field :hostname, :string
-    field :path, :string
     field :verification_code, :string
     field :public, :boolean, default: true
     field :next_check_at, :utc_datetime
diff --git a/lib/philomena/channels/channel.ex b/lib/philomena/channels/channel.ex
index 54bf30ba..58d2942c 100644
--- a/lib/philomena/channels/channel.ex
+++ b/lib/philomena/channels/channel.ex
@@ -12,7 +12,6 @@ defmodule Philomena.Channels.Channel do
 
     field :short_name, :string
     field :title, :string, default: ""
-    field :tags, :string
     field :viewers, :integer, default: 0
     field :nsfw, :boolean, default: false
     field :is_live, :boolean, default: false
@@ -20,16 +19,6 @@ defmodule Philomena.Channels.Channel do
     field :next_check_at, :utc_datetime
     field :last_live_at, :utc_datetime
 
-    field :viewer_minutes_today, :integer, default: 0
-    field :viewer_minutes_thisweek, :integer, default: 0
-    field :viewer_minutes_thismonth, :integer, default: 0
-    field :total_viewer_minutes, :integer, default: 0
-
-    field :banner_image, :string
-    field :channel_image, :string
-    field :remote_stream_id, :integer
-    field :thumbnail_url, :string, default: ""
-
     timestamps(inserted_at: :created_at, type: :utc_datetime)
   end
 
diff --git a/lib/philomena/comments/comment.ex b/lib/philomena/comments/comment.ex
index 9571b450..e54a415b 100644
--- a/lib/philomena/comments/comment.ex
+++ b/lib/philomena/comments/comment.ex
@@ -14,15 +14,12 @@ defmodule Philomena.Comments.Comment do
     field :body, :string
     field :ip, EctoNetwork.INET
     field :fingerprint, :string
-    field :user_agent, :string, default: ""
-    field :referrer, :string, default: ""
     field :anonymous, :boolean, default: false
     field :hidden_from_users, :boolean, default: false
     field :edit_reason, :string
     field :edited_at, :utc_datetime
     field :deletion_reason, :string, default: ""
     field :destroyed_content, :boolean, default: false
-    field :name_at_post_time, :string
     field :approved, :boolean
 
     timestamps(inserted_at: :created_at, type: :utc_datetime)
@@ -35,7 +32,6 @@ defmodule Philomena.Comments.Comment do
     |> validate_required([:body])
     |> validate_length(:body, min: 1, max: 300_000, count: :bytes)
     |> change(attribution)
-    |> put_name_at_post_time(attribution[:user])
     |> Approval.maybe_put_approval(attribution[:user])
     |> Approval.maybe_strip_images(attribution[:user])
   end
@@ -74,7 +70,4 @@ defmodule Philomena.Comments.Comment do
     change(comment)
     |> put_change(:approved, true)
   end
-
-  defp put_name_at_post_time(changeset, nil), do: changeset
-  defp put_name_at_post_time(changeset, user), do: change(changeset, name_at_post_time: user.name)
 end
diff --git a/lib/philomena/images.ex b/lib/philomena/images.ex
index 3aefa4c2..802f36aa 100644
--- a/lib/philomena/images.ex
+++ b/lib/philomena/images.ex
@@ -94,11 +94,6 @@ defmodule Philomena.Images do
 
     Multi.new()
     |> Multi.insert(:image, image)
-    |> Multi.run(:name_caches, fn repo, %{image: image} ->
-      image
-      |> Image.cache_changeset()
-      |> repo.update()
-    end)
     |> Multi.run(:added_tag_count, fn repo, %{image: image} ->
       tag_ids = image.added_tags |> Enum.map(& &1.id)
       tags = Tag |> where([t], t.id in ^tag_ids)
@@ -384,8 +379,6 @@ defmodule Philomena.Images do
       updated_at: now,
       ip: attribution[:ip],
       fingerprint: attribution[:fingerprint],
-      user_agent: attribution[:user_agent],
-      referrer: attribution[:referrer],
       added: added
     }
   end
@@ -521,8 +514,6 @@ defmodule Philomena.Images do
       tag_name_cache: tag.name,
       ip: attribution[:ip],
       fingerprint: attribution[:fingerprint],
-      user_agent: attribution[:user_agent],
-      referrer: attribution[:referrer],
       added: added
     }
   end
diff --git a/lib/philomena/images/image.ex b/lib/philomena/images/image.ex
index ee03b651..e02356dd 100644
--- a/lib/philomena/images/image.ex
+++ b/lib/philomena/images/image.ex
@@ -2,7 +2,6 @@ defmodule Philomena.Images.Image do
   use Ecto.Schema
 
   import Ecto.Changeset
-  import Ecto.Query
 
   alias Philomena.ImageIntensities.ImageIntensity
   alias Philomena.ImageVotes.ImageVote
@@ -59,14 +58,11 @@ defmodule Philomena.Images.Image do
     field :image_is_animated, :boolean, source: :is_animated
     field :ip, EctoNetwork.INET
     field :fingerprint, :string
-    field :user_agent, :string, default: ""
-    field :referrer, :string, default: ""
     field :anonymous, :boolean, default: false
     field :score, :integer, default: 0
     field :faves_count, :integer, default: 0
     field :upvotes_count, :integer, default: 0
     field :downvotes_count, :integer, default: 0
-    field :votes_count, :integer, default: 0
     field :source_url, :string
     field :description, :string, default: ""
     field :image_sha512_hash, :string
@@ -88,11 +84,6 @@ defmodule Philomena.Images.Image do
     field :hides_count, :integer, default: 0
     field :approved, :boolean
 
-    # todo: can probably remove these now
-    field :tag_list_cache, :string
-    field :tag_list_plus_alias_cache, :string
-    field :file_name_cache, :string
-
     field :removed_tags, {:array, :any}, default: [], virtual: true
     field :added_tags, {:array, :any}, default: [], virtual: true
     field :removed_sources, {:array, :any}, default: [], virtual: true
@@ -228,7 +219,6 @@ defmodule Philomena.Images.Image do
     |> cast(attrs, [])
     |> TagDiffer.diff_input(old_tags, new_tags, excluded_tags)
     |> TagValidator.validate_tags()
-    |> cache_changeset()
   end
 
   def locked_tags_changeset(image, attrs, locked_tags) do
@@ -345,53 +335,6 @@ defmodule Philomena.Images.Image do
     |> put_change(:first_seen_at, DateTime.utc_now(:second))
   end
 
-  def cache_changeset(image) do
-    changeset = change(image)
-    image = apply_changes(changeset)
-
-    {tag_list_cache, tag_list_plus_alias_cache, file_name_cache} =
-      create_caches(image.id, image.tags)
-
-    changeset
-    |> put_change(:tag_list_cache, tag_list_cache)
-    |> put_change(:tag_list_plus_alias_cache, tag_list_plus_alias_cache)
-    |> put_change(:file_name_cache, file_name_cache)
-  end
-
-  defp create_caches(image_id, tags) do
-    tags = Tag.display_order(tags)
-
-    tag_list_cache =
-      tags
-      |> Enum.map_join(", ", & &1.name)
-
-    tag_ids = tags |> Enum.map(& &1.id)
-
-    aliases =
-      Tag
-      |> where([t], t.aliased_tag_id in ^tag_ids)
-      |> Repo.all()
-
-    tag_list_plus_alias_cache =
-      (tags ++ aliases)
-      |> Tag.display_order()
-      |> Enum.map_join(", ", & &1.name)
-
-    # Truncate filename to 150 characters, making room for the path + filename on Windows
-    # https://stackoverflow.com/questions/265769/maximum-filename-length-in-ntfs-windows-xp-and-windows-vista
-    file_name_slug_fragment =
-      tags
-      |> Enum.map_join("_", & &1.slug)
-      |> String.to_charlist()
-      |> Enum.filter(&(&1 in ?a..?z or &1 in ~c"0123456789_-"))
-      |> List.to_string()
-      |> String.slice(0..150)
-
-    file_name_cache = "#{image_id}__#{file_name_slug_fragment}"
-
-    {tag_list_cache, tag_list_plus_alias_cache, file_name_cache}
-  end
-
   defp create_key do
     Base.encode16(:crypto.strong_rand_bytes(6), case: :lower)
   end
diff --git a/lib/philomena/polls/poll.ex b/lib/philomena/polls/poll.ex
index b9032e7e..eb998265 100644
--- a/lib/philomena/polls/poll.ex
+++ b/lib/philomena/polls/poll.ex
@@ -3,20 +3,16 @@ defmodule Philomena.Polls.Poll do
   import Ecto.Changeset
 
   alias Philomena.Topics.Topic
-  alias Philomena.Users.User
   alias Philomena.PollOptions.PollOption
 
   schema "polls" do
     belongs_to :topic, Topic
-    belongs_to :deleted_by, User
     has_many :options, PollOption
 
     field :title, :string
     field :vote_method, :string
     field :active_until, PhilomenaQuery.Ecto.RelativeDate
     field :total_votes, :integer, default: 0
-    field :hidden_from_users, :boolean, default: false
-    field :deletion_reason, :string, default: ""
 
     timestamps(inserted_at: :created_at, type: :utc_datetime)
   end
diff --git a/lib/philomena/posts/post.ex b/lib/philomena/posts/post.ex
index 55d5b401..11fc87bf 100644
--- a/lib/philomena/posts/post.ex
+++ b/lib/philomena/posts/post.ex
@@ -15,15 +15,12 @@ defmodule Philomena.Posts.Post do
     field :edit_reason, :string
     field :ip, EctoNetwork.INET
     field :fingerprint, :string
-    field :user_agent, :string, default: ""
-    field :referrer, :string, default: ""
     field :topic_position, :integer
     field :hidden_from_users, :boolean, default: false
     field :anonymous, :boolean, default: false
     field :edited_at, :utc_datetime
     field :deletion_reason, :string, default: ""
     field :destroyed_content, :boolean, default: false
-    field :name_at_post_time, :string
     field :approved, :boolean, default: false
 
     timestamps(inserted_at: :created_at, type: :utc_datetime)
@@ -47,7 +44,6 @@ defmodule Philomena.Posts.Post do
     |> validate_required([:body])
     |> validate_length(:body, min: 1, max: 300_000, count: :bytes)
     |> change(attribution)
-    |> put_name_at_post_time(attribution[:user])
     |> Approval.maybe_put_approval(attribution[:user])
     |> Approval.maybe_strip_images(attribution[:user])
   end
@@ -61,7 +57,6 @@ defmodule Philomena.Posts.Post do
     |> validate_length(:body, min: 1, max: 300_000, count: :bytes)
     |> change(attribution)
     |> change(topic_position: 0)
-    |> put_name_at_post_time(attribution[:user])
     |> Approval.maybe_put_approval(attribution[:user])
     |> Approval.maybe_strip_images(attribution[:user])
   end
@@ -90,7 +85,4 @@ defmodule Philomena.Posts.Post do
     change(post)
     |> put_change(:approved, true)
   end
-
-  defp put_name_at_post_time(changeset, nil), do: changeset
-  defp put_name_at_post_time(changeset, user), do: change(changeset, name_at_post_time: user.name)
 end
diff --git a/lib/philomena/posts/search_index.ex b/lib/philomena/posts/search_index.ex
index 9c8c2780..b5522fa1 100644
--- a/lib/philomena/posts/search_index.ex
+++ b/lib/philomena/posts/search_index.ex
@@ -52,8 +52,8 @@ defmodule Philomena.Posts.SearchIndex do
       author: if(!!post.user and !post.anonymous, do: String.downcase(post.user.name)),
       subject: post.topic.title,
       ip: post.ip |> to_string(),
-      user_agent: post.user_agent,
-      referrer: post.referrer,
+      user_agent: "",
+      referrer: "",
       fingerprint: post.fingerprint,
       topic_position: post.topic_position,
       forum: post.topic.forum.short_name,
diff --git a/lib/philomena/reports.ex b/lib/philomena/reports.ex
index 5cf508dd..7e0466dc 100644
--- a/lib/philomena/reports.ex
+++ b/lib/philomena/reports.ex
@@ -139,9 +139,7 @@ defmodule Philomena.Reports do
     attributes = %{
       system: true,
       ip: %Postgrex.INET{address: {127, 0, 0, 1}, netmask: 32},
-      fingerprint: "ffff",
-      user_agent:
-        "Mozilla/5.0 (X11; Philomena; Linux x86_64; rv:86.0) Gecko/20100101 Firefox/86.0"
+      fingerprint: "ffff"
     }
 
     %Report{reportable_type: reportable_type, reportable_id: reportable_id}
diff --git a/lib/philomena/reports/report.ex b/lib/philomena/reports/report.ex
index 461b6eea..bf9c8c10 100644
--- a/lib/philomena/reports/report.ex
+++ b/lib/philomena/reports/report.ex
@@ -10,8 +10,6 @@ defmodule Philomena.Reports.Report do
 
     field :ip, EctoNetwork.INET
     field :fingerprint, :string
-    field :user_agent, :string, default: ""
-    field :referrer, :string, default: ""
     field :reason, :string
     field :state, :string, default: "open"
     field :open, :boolean, default: true
@@ -71,8 +69,7 @@ defmodule Philomena.Reports.Report do
       :category,
       :reason,
       :ip,
-      :fingerprint,
-      :user_agent
+      :fingerprint
     ])
   end
 
diff --git a/lib/philomena/roles/role.ex b/lib/philomena/roles/role.ex
index 359c90b1..27ccb73a 100644
--- a/lib/philomena/roles/role.ex
+++ b/lib/philomena/roles/role.ex
@@ -4,12 +4,7 @@ defmodule Philomena.Roles.Role do
 
   schema "roles" do
     field :name, :string
-
-    # fixme: rails polymorphic relation
-    field :resource_id, :integer
     field :resource_type, :string
-
-    timestamps(inserted_at: :created_at, type: :utc_datetime)
   end
 
   @doc false
diff --git a/lib/philomena/source_changes/source_change.ex b/lib/philomena/source_changes/source_change.ex
index 3cff4685..d17e0d93 100644
--- a/lib/philomena/source_changes/source_change.ex
+++ b/lib/philomena/source_changes/source_change.ex
@@ -8,8 +8,6 @@ defmodule Philomena.SourceChanges.SourceChange do
 
     field :ip, EctoNetwork.INET
     field :fingerprint, :string
-    field :user_agent, :string, default: ""
-    field :referrer, :string, default: ""
     field :value, :string
     field :added, :boolean
 
diff --git a/lib/philomena/tag_changes/tag_change.ex b/lib/philomena/tag_changes/tag_change.ex
index 3bc9eb10..6d33397d 100644
--- a/lib/philomena/tag_changes/tag_change.ex
+++ b/lib/philomena/tag_changes/tag_change.ex
@@ -9,8 +9,6 @@ defmodule Philomena.TagChanges.TagChange do
 
     field :ip, EctoNetwork.INET
     field :fingerprint, :string
-    field :user_agent, :string, default: ""
-    field :referrer, :string, default: ""
     field :added, :boolean
     field :tag_name_cache, :string, default: ""
 
diff --git a/lib/philomena/users/eraser.ex b/lib/philomena/users/eraser.ex
index d584ac77..a131f049 100644
--- a/lib/philomena/users/eraser.ex
+++ b/lib/philomena/users/eraser.ex
@@ -116,8 +116,6 @@ defmodule Philomena.Users.Eraser do
       user: user,
       ip: @wipe_ip,
       fingerprint: @wipe_fp,
-      user_agent: "",
-      referrer: ""
     ]
 
     {:ok, _} = Images.update_sources(source_change.image, attribution, attrs)
diff --git a/lib/philomena/users/user.ex b/lib/philomena/users/user.ex
index 6b300a7c..1b32723a 100644
--- a/lib/philomena/users/user.ex
+++ b/lib/philomena/users/user.ex
@@ -109,7 +109,6 @@ defmodule Philomena.Users.User do
     field :watched_tag_list, :string, virtual: true
 
     # Other stuff
-    field :last_donation_at, :utc_datetime
     field :last_renamed_at, :utc_datetime
     field :deleted_at, :utc_datetime
     field :scratchpad, :string
diff --git a/lib/philomena_web/controllers/admin/batch/tag_controller.ex b/lib/philomena_web/controllers/admin/batch/tag_controller.ex
index 44e6485b..835917a0 100644
--- a/lib/philomena_web/controllers/admin/batch/tag_controller.ex
+++ b/lib/philomena_web/controllers/admin/batch/tag_controller.ex
@@ -37,8 +37,6 @@ defmodule PhilomenaWeb.Admin.Batch.TagController do
     attributes = %{
       ip: attributes[:ip],
       fingerprint: attributes[:fingerprint],
-      user_agent: attributes[:user_agent],
-      referrer: attributes[:referrer],
       user_id: attributes[:user].id
     }
 
diff --git a/lib/philomena_web/controllers/tag_change/full_revert_controller.ex b/lib/philomena_web/controllers/tag_change/full_revert_controller.ex
index 3ebfd471..2f095715 100644
--- a/lib/philomena_web/controllers/tag_change/full_revert_controller.ex
+++ b/lib/philomena_web/controllers/tag_change/full_revert_controller.ex
@@ -11,8 +11,6 @@ defmodule PhilomenaWeb.TagChange.FullRevertController do
     attributes = %{
       ip: to_string(attributes[:ip]),
       fingerprint: attributes[:fingerprint],
-      referrer: attributes[:referrer],
-      user_agent: attributes[:referrer],
       user_id: attributes[:user].id,
       batch_size: attributes[:batch_size] || 100
     }
diff --git a/lib/philomena_web/controllers/tag_change/revert_controller.ex b/lib/philomena_web/controllers/tag_change/revert_controller.ex
index fba63fee..84782304 100644
--- a/lib/philomena_web/controllers/tag_change/revert_controller.ex
+++ b/lib/philomena_web/controllers/tag_change/revert_controller.ex
@@ -13,8 +13,6 @@ defmodule PhilomenaWeb.TagChange.RevertController do
     attributes = %{
       ip: attributes[:ip],
       fingerprint: attributes[:fingerprint],
-      referrer: attributes[:referrer],
-      user_agent: attributes[:referrer],
       user_id: attributes[:user].id
     }
 
diff --git a/lib/philomena_web/plugs/user_attribution_plug.ex b/lib/philomena_web/plugs/user_attribution_plug.ex
index bfbd5da8..7ea9cbd0 100644
--- a/lib/philomena_web/plugs/user_attribution_plug.ex
+++ b/lib/philomena_web/plugs/user_attribution_plug.ex
@@ -24,9 +24,7 @@ defmodule PhilomenaWeb.UserAttributionPlug do
     attributes = [
       ip: remote_ip,
       fingerprint: fingerprint(conn, conn.path_info),
-      referrer: referrer(conn.assigns.referrer),
       user: user,
-      user_agent: user_agent(conn)
     ]
 
     conn
@@ -47,7 +45,4 @@ defmodule PhilomenaWeb.UserAttributionPlug do
   defp fingerprint(conn, _) do
     conn.cookies["_ses"]
   end
-
-  defp referrer(nil), do: nil
-  defp referrer(r), do: String.slice(r, 0, 255)
 end
diff --git a/lib/philomena_web/templates/admin/report/show.html.slime b/lib/philomena_web/templates/admin/report/show.html.slime
index 20835cdd..15530498 100644
--- a/lib/philomena_web/templates/admin/report/show.html.slime
+++ b/lib/philomena_web/templates/admin/report/show.html.slime
@@ -23,11 +23,6 @@ article.block.communication
         => link_to_ip @conn, @report.ip
         => link_to_fingerprint @conn, @report.fingerprint
 
-    div
-      ' User-Agent:
-      code
-        = @report.user_agent
-
 = if assigns[:mod_notes] do
   h4 Mod Notes
   = render PhilomenaWeb.Admin.ModNoteView, "_table.html", mod_notes: @mod_notes, conn: @conn
diff --git a/priv/repo/seeds_development.exs b/priv/repo/seeds_development.exs
index cde0302a..47bcd1e7 100644
--- a/priv/repo/seeds_development.exs
+++ b/priv/repo/seeds_development.exs
@@ -40,8 +40,6 @@ pleb = Repo.get_by!(User, name: "Pleb")
 request_attributes = [
   fingerprint: "c1836832948",
   ip: ip,
-  user_agent: "Hopefully not IE",
-  referrer: "localhost",
   user_id: pleb.id,
   user: pleb
 ]