diff --git a/Foxnouns.Frontend/src/lib/components/IconButton.svelte b/Foxnouns.Frontend/src/lib/components/IconButton.svelte
index 1feedd9..a370002 100644
--- a/Foxnouns.Frontend/src/lib/components/IconButton.svelte
+++ b/Foxnouns.Frontend/src/lib/components/IconButton.svelte
@@ -11,15 +11,29 @@
 		id?: string;
 		onclick?: MouseEventHandler<HTMLButtonElement>;
 		outline?: boolean;
+		active?: boolean;
+		class?: string;
 	};
-	let { icon, tooltip, color = "primary", type, id, onclick, outline }: Props = $props();
+	let {
+		icon,
+		tooltip,
+		color = "primary",
+		type,
+		id,
+		onclick,
+		outline,
+		active,
+		class: className,
+	}: Props = $props();
 </script>
 
 <button
 	{id}
 	{type}
 	use:tippy={{ content: tooltip }}
-	class="btn {outline ? `btn-outline-${color}` : `btn-${color}`}"
+	class="btn {outline ? `btn-outline-${color}` : `btn-${color}`} {className || ''}"
+	class:active
+	aria-pressed={active}
 	{onclick}
 >
 	<Icon name={icon} />
diff --git a/Foxnouns.Frontend/src/lib/components/editor/CustomPreferenceEditor.svelte b/Foxnouns.Frontend/src/lib/components/editor/CustomPreferenceEditor.svelte
new file mode 100644
index 0000000..b9eec51
--- /dev/null
+++ b/Foxnouns.Frontend/src/lib/components/editor/CustomPreferenceEditor.svelte
@@ -0,0 +1,41 @@
+<script lang="ts">
+	import { type CustomPreference } from "$api/models";
+	import IconButton from "$components/IconButton.svelte";
+	import { t } from "$lib/i18n";
+	import PreferenceIconSelector from "./PreferenceIconSelector.svelte";
+	import PreferenceSizeEditor from "./PreferenceSizeEditor.svelte";
+
+	type Props = { pref: CustomPreference & { id: string | undefined }; remove: () => void };
+	let { pref = $bindable(), remove }: Props = $props();
+</script>
+
+<div class="input-group my-1">
+	<PreferenceIconSelector bind:icon={pref.icon} />
+	<input
+		type="text"
+		bind:value={pref.tooltip}
+		class="form-control"
+		placeholder={$t("editor.tooltip-hint")}
+	/>
+	<PreferenceSizeEditor bind:size={pref.size} />
+	<IconButton
+		color="secondary"
+		icon={pref.favourite ? "star-fill" : "star"}
+		onclick={() => (pref.favourite = !pref.favourite)}
+		active={pref.favourite}
+		tooltip={$t("editor.custom-preference-favourite")}
+	/>
+	<IconButton
+		color="secondary"
+		icon="fonts"
+		onclick={() => (pref.muted = !pref.muted)}
+		active={pref.muted}
+		tooltip={$t("editor.custom-preference-muted")}
+	/>
+	<IconButton
+		color="danger"
+		icon="trash3"
+		tooltip={$t("editor.remove-entry")}
+		onclick={() => remove()}
+	/>
+</div>
diff --git a/Foxnouns.Frontend/src/lib/components/editor/PreferenceIconSelector.svelte b/Foxnouns.Frontend/src/lib/components/editor/PreferenceIconSelector.svelte
new file mode 100644
index 0000000..3bc3f05
--- /dev/null
+++ b/Foxnouns.Frontend/src/lib/components/editor/PreferenceIconSelector.svelte
@@ -0,0 +1,80 @@
+<script lang="ts">
+	import IconButton from "$components/IconButton.svelte";
+	import { t } from "$lib/i18n";
+	import icons from "$lib/icons";
+	import {
+		ButtonDropdown,
+		DropdownToggle,
+		Icon,
+		DropdownMenu,
+		DropdownItem,
+	} from "@sveltestrap/sveltestrap";
+	import tippy from "tippy.js";
+
+	const MAX_VISIBLE_ITEMS = 20;
+
+	type Props = { icon: string };
+	let { icon = $bindable() }: Props = $props();
+
+	let search = $state("");
+	let showAll = $state(false);
+	let filteredIcons = $derived(
+		icons
+			.filter((icon) => icon.toLowerCase().includes(search.toLowerCase()))
+			.sort()
+			.slice(0, showAll ? undefined : MAX_VISIBLE_ITEMS),
+	);
+
+	let totalIcons = $derived(
+		icons.filter((icon) => icon.toLowerCase().includes(search.toLowerCase())).length,
+	);
+</script>
+
+<ButtonDropdown autoClose={false}>
+	<span use:tippy={{ content: $t("editor.icons-change-icon") }}>
+		<DropdownToggle color="secondary" caret>
+			<Icon name={icon} />
+			<span class="visually-hidden">{$t("editor.icons-change-icon")}</span>
+		</DropdownToggle>
+	</span>
+	<DropdownMenu>
+		<p class="px-2">
+			<input
+				type="text"
+				class="form-control"
+				bind:value={search}
+				placeholder={$t("editor.flag-search-placeholder")}
+			/>
+		</p>
+		<ul class="list-unstyled icon-list text-center">
+			{#each filteredIcons as selectable}
+				<IconButton
+					icon={selectable}
+					tooltip={selectable}
+					type="button"
+					color="secondary"
+					outline
+					class="border-0"
+					onclick={() => (icon = selectable)}
+				/>
+			{/each}
+		</ul>
+		{#if totalIcons > MAX_VISIBLE_ITEMS || showAll}
+			<DropdownItem divider />
+			<DropdownItem toggle onclick={() => (showAll = !showAll)}>
+				{#if showAll}
+					{$t("editor.icons-stop-showing-all")}
+				{:else}
+					{$t("editor.icons-show-all", { count: totalIcons })}
+				{/if}
+			</DropdownItem>
+		{/if}
+	</DropdownMenu>
+</ButtonDropdown>
+
+<style>
+	.icon-list {
+		max-height: 200px;
+		overflow-y: auto;
+	}
+</style>
diff --git a/Foxnouns.Frontend/src/lib/components/editor/PreferenceSizeEditor.svelte b/Foxnouns.Frontend/src/lib/components/editor/PreferenceSizeEditor.svelte
new file mode 100644
index 0000000..46fc3e0
--- /dev/null
+++ b/Foxnouns.Frontend/src/lib/components/editor/PreferenceSizeEditor.svelte
@@ -0,0 +1,43 @@
+<script lang="ts">
+	import { PreferenceSize } from "$api/models";
+	import { t } from "$lib/i18n";
+	import tippy from "$lib/tippy";
+	import {
+		ButtonDropdown,
+		DropdownItem,
+		DropdownMenu,
+		DropdownToggle,
+	} from "@sveltestrap/sveltestrap";
+	import Type from "svelte-bootstrap-icons/lib/Type.svelte";
+
+	type Props = { size: PreferenceSize };
+	let { size = $bindable() }: Props = $props();
+</script>
+
+<ButtonDropdown>
+	<span use:tippy={{ content: $t("editor.custom-preference-size") }}>
+		<DropdownToggle color="secondary" caret>
+			<Type /> <span class="visually-hidden">{$t("editor.custom-preference-size")}</span>
+		</DropdownToggle>
+	</span>
+	<DropdownMenu>
+		<DropdownItem
+			active={size === PreferenceSize.Large}
+			on:click={() => (size = PreferenceSize.Large)}
+		>
+			{$t("editor.custom-preference-size-large")}
+		</DropdownItem>
+		<DropdownItem
+			active={size === PreferenceSize.Normal}
+			on:click={() => (size = PreferenceSize.Normal)}
+		>
+			{$t("editor.custom-preference-size-medium")}
+		</DropdownItem>
+		<DropdownItem
+			active={size === PreferenceSize.Small}
+			on:click={() => (size = PreferenceSize.Small)}
+		>
+			{$t("editor.custom-preference-size-small")}
+		</DropdownItem>
+	</DropdownMenu>
+</ButtonDropdown>
diff --git a/Foxnouns.Frontend/src/lib/i18n/locales/en.json b/Foxnouns.Frontend/src/lib/i18n/locales/en.json
index f9de99f..403de1a 100644
--- a/Foxnouns.Frontend/src/lib/i18n/locales/en.json
+++ b/Foxnouns.Frontend/src/lib/i18n/locales/en.json
@@ -146,7 +146,8 @@
 		"flag-upload-button": "Upload",
 		"flag-description-placeholder": "Description",
 		"flag-name-placeholder": "Name",
-		"flag-upload-success": "Successfully uploaded your flag! It may take a few seconds before it's saved."
+		"flag-upload-success": "Successfully uploaded your flag! It may take a few seconds before it's saved.",
+		"custom-preferences-title": "Custom preferences"
 	},
 	"yes": "Yes",
 	"no": "No",
@@ -218,7 +219,18 @@
 		"flag-search-no-account-flags": "You haven't uploaded any flags yet.",
 		"flag-search-hint": "Can't find the flag you're looking for? Try using the search bar above.",
 		"flag-manage-your-flags": "Manage your flags",
-		"links-header": "Links"
+		"links-header": "Links",
+		"icons-stop-showing-all": "Stop showing all results",
+		"icons-show-all": "Show all results ({{count}})",
+		"icons-change-icon": "Change icon",
+		"tooltip-hint": "Tooltip",
+		"add-custom-preference": "Add",
+		"custom-preference-size-large": "Large",
+		"custom-preference-size-medium": "Medium",
+		"custom-preference-size-small": "Small",
+		"custom-preference-size": "Text size",
+		"custom-preference-muted": "Show as muted text",
+		"custom-preference-favourite": "Treat like favourite"
 	},
 	"cancel": "Cancel"
 }
diff --git a/Foxnouns.Frontend/src/routes/settings/+layout.svelte b/Foxnouns.Frontend/src/routes/settings/+layout.svelte
index 0b0ac53..6786e63 100644
--- a/Foxnouns.Frontend/src/routes/settings/+layout.svelte
+++ b/Foxnouns.Frontend/src/routes/settings/+layout.svelte
@@ -29,6 +29,12 @@
 		<NavLink active={isActive("/settings/profile", true)} href="/settings/profile">
 			{$t("settings.your-profile-tab")}
 		</NavLink>
+		<NavLink active={isActive("/settings/flags")} href="/settings/flags">
+			{$t("settings.flag-title")}
+		</NavLink>
+		<NavLink active={isActive("/settings/prefs")} href="/settings/prefs">
+			{$t("settings.custom-preferences-title")}
+		</NavLink>
 		<NavLink active={isActive("/settings/members", true)} href="/settings/members">
 			{$t("settings.members-tab")}
 		</NavLink>
diff --git a/Foxnouns.Frontend/src/routes/settings/flags/+page.svelte b/Foxnouns.Frontend/src/routes/settings/flags/+page.svelte
index 942e90f..7a3a58b 100644
--- a/Foxnouns.Frontend/src/routes/settings/flags/+page.svelte
+++ b/Foxnouns.Frontend/src/routes/settings/flags/+page.svelte
@@ -112,7 +112,7 @@
 
 <ClientPaginator center bind:currentPage {pageCount} />
 
-<Accordion>
+<Accordion class="mb-3">
 	{#each arr as flag (flag.id)}
 		<AccordionItem>
 			<span slot="header">
diff --git a/Foxnouns.Frontend/src/routes/settings/members/[id]/+page.svelte b/Foxnouns.Frontend/src/routes/settings/members/[id]/+page.svelte
index 7e032f6..64be86e 100644
--- a/Foxnouns.Frontend/src/routes/settings/members/[id]/+page.svelte
+++ b/Foxnouns.Frontend/src/routes/settings/members/[id]/+page.svelte
@@ -147,7 +147,7 @@
 	</div>
 	<div class="row mb-3">
 		<h4>{$t("edit-profile.bio-tab")}</h4>
-		<form method="POST" action="?/bio" use:enhance>
+		<form method="POST" action="?/bio">
 			<BioEditor bind:value={bio} maxLength={data.meta.limits.bio_length} />
 		</form>
 	</div>
diff --git a/Foxnouns.Frontend/src/routes/settings/prefs/+page.svelte b/Foxnouns.Frontend/src/routes/settings/prefs/+page.svelte
new file mode 100644
index 0000000..2cc4f6a
--- /dev/null
+++ b/Foxnouns.Frontend/src/routes/settings/prefs/+page.svelte
@@ -0,0 +1,99 @@
+<script lang="ts">
+	import { apiRequest } from "$api";
+	import ApiError, { type RawApiError } from "$api/error";
+	import { PreferenceSize, type CustomPreference } from "$api/models";
+	import CustomPreferenceEditor from "$components/editor/CustomPreferenceEditor.svelte";
+	import FormStatusMarker from "$components/editor/FormStatusMarker.svelte";
+	import { t } from "$lib/i18n";
+	import log from "$lib/log";
+	import type { PageData } from "./$types";
+
+	type Props = { data: PageData };
+	let { data }: Props = $props();
+
+	type EditableCustomPreference = CustomPreference & {
+		id: string | undefined;
+	};
+
+	let customPreferences = $state(
+		Object.keys(data.user.custom_preferences)
+			.sort()
+			.map(
+				(id) =>
+					({
+						...data.user.custom_preferences[id],
+						id,
+					}) as EditableCustomPreference,
+			),
+	);
+
+	let canAdd = $derived(customPreferences.length < data.meta.limits.custom_preferences);
+	// Used for form status
+	let ok: { ok: boolean; error: RawApiError | null } | null = $state(null);
+
+	const remove = (idx: number) => {
+		customPreferences.splice(idx, 1);
+		customPreferences = [...customPreferences];
+	};
+
+	const add = () => {
+		customPreferences = [
+			...customPreferences,
+			{
+				id: undefined,
+				tooltip: "",
+				icon: "question-lg",
+				size: PreferenceSize.Normal,
+				muted: false,
+				favourite: false,
+			},
+		];
+	};
+
+	const save = async () => {
+		try {
+			const resp = await apiRequest<Record<string, CustomPreference>>(
+				"PATCH",
+				"/users/@me/custom-preferences",
+				{
+					body: customPreferences,
+					token: data.token,
+				},
+			);
+
+			customPreferences = Object.keys(resp)
+				.sort()
+				.map(
+					(id) =>
+						({
+							...resp[id],
+							id,
+						}) as EditableCustomPreference,
+				);
+
+			ok = { ok: true, error: null };
+		} catch (e) {
+			log.error("error saving custom preferences:", e);
+			if (e instanceof ApiError) ok = { ok: false, error: e.obj };
+			else ok = null;
+		}
+	};
+</script>
+
+<h3>
+	{$t("settings.custom-preferences-title")}
+	<div class="btn-group">
+		<button class="btn btn-primary" onclick={() => save()}>{$t("save-changes")}</button>
+		<button class="btn btn-success" onclick={add}>{$t("editor.add-custom-preference")}</button>
+	</div>
+</h3>
+
+<FormStatusMarker form={ok} />
+
+<div>
+	{#each customPreferences as _, idx}
+		<CustomPreferenceEditor bind:pref={customPreferences[idx]} remove={() => remove(idx)} />
+	{/each}
+</div>
+
+<form></form>
diff --git a/Foxnouns.Frontend/src/routes/settings/profile/bio/+page.svelte b/Foxnouns.Frontend/src/routes/settings/profile/bio/+page.svelte
index 4ec8717..19e04fb 100644
--- a/Foxnouns.Frontend/src/routes/settings/profile/bio/+page.svelte
+++ b/Foxnouns.Frontend/src/routes/settings/profile/bio/+page.svelte
@@ -3,7 +3,6 @@
 	import type { ActionData, PageData } from "./$types";
 	import BioEditor from "$components/editor/BioEditor.svelte";
 	import { t } from "$lib/i18n";
-	import { enhance } from "$app/forms";
 
 	type Props = { data: PageData; form: ActionData };
 	let { data, form }: Props = $props();
@@ -13,6 +12,6 @@
 
 <h4>{$t("edit-profile.bio-tab")}</h4>
 <FormStatusMarker {form} />
-<form method="POST" use:enhance>
+<form method="POST">
 	<BioEditor bind:value={bio} maxLength={data.meta.limits.bio_length} />
 </form>