diff --git a/src/components/debugging/StorageViewer.svelte b/src/components/debugging/StorageViewer.svelte
index 145e16b..b217caf 100644
--- a/src/components/debugging/StorageViewer.svelte
+++ b/src/components/debugging/StorageViewer.svelte
@@ -1,25 +1,33 @@
 <script>
+    import { run } from 'svelte/legacy';
+
     import Menu from "$components/ui/menu/Menu.svelte";
     import MenuItem from "$components/ui/menu/MenuItem.svelte";
     import { storagesCollection } from "$stores/debug";
     import { goto } from "$app/navigation";
     import { findDeepObject } from "$lib/utils";
 
-    /** @type {string} */
-    export let storage;
+    
 
-    /** @type {string[]} */
-    export let path;
+    
+    /**
+     * @typedef {Object} Props
+     * @property {string} storage
+     * @property {string[]} path
+     */
+
+    /** @type {Props} */
+    let { storage, path } = $props();
 
     /** @type {Object|null} */
-    let targetStorage = null;
+    let targetStorage = $state(null);
     /** @type {[string, string][]} */
-    let breadcrumbs = [];
+    let breadcrumbs = $state([]);
     /** @type {Object<string, any>|null} */
-    let targetObject = null;
-    let targetPathString = '';
+    let targetObject = $state(null);
+    let targetPathString = $state('');
 
-    $: {
+    run(() => {
         /** @type {[string, string][]} */
         const builtBreadcrumbs = [];
 
@@ -40,21 +48,21 @@
         if (targetPathString.length) {
             targetPathString += "/";
         }
-    }
+    });
 
-    $: {
+    run(() => {
         targetStorage = $storagesCollection[storage];
 
         if (!targetStorage) {
             goto("/preferences/debug/storage");
         }
-    }
+    });
 
-    $: {
+    run(() => {
         targetObject = targetStorage
                 ? findDeepObject(targetStorage, path)
                 : null;
-    }
+    });
 
     /**
      * Helper function to resolve type, including the null.
diff --git a/src/components/features/GroupView.svelte b/src/components/features/GroupView.svelte
index 7d912e7..5f17999 100644
--- a/src/components/features/GroupView.svelte
+++ b/src/components/features/GroupView.svelte
@@ -1,15 +1,19 @@
 <script>
     import TagsColorContainer from "$components/tags/TagsColorContainer.svelte";
 
+    
     /**
-     * @type {import('$entities/TagGroup').default}
+     * @typedef {Object} Props
+     * @property {import('$entities/TagGroup').default} group
      */
-    export let group;
 
-    let sortedTagsList, sortedPrefixes;
+    /** @type {Props} */
+    let { group } = $props();
 
-    $: sortedTagsList = group.settings.tags.sort((a, b) => a.localeCompare(b));
-    $: sortedPrefixes = group.settings.prefixes.sort((a, b) => a.localeCompare(b));
+    let sortedTagsList = $derived(group.settings.tags.sort((a, b) => a.localeCompare(b))), sortedPrefixes = $derived(group.settings.prefixes.sort((a, b) => a.localeCompare(b)));
+
+    
+    
 </script>
 
 <div class="block">
diff --git a/src/components/features/ProfileView.svelte b/src/components/features/ProfileView.svelte
index 59efe3f..2fb3b64 100644
--- a/src/components/features/ProfileView.svelte
+++ b/src/components/features/ProfileView.svelte
@@ -1,6 +1,12 @@
 <script>
-    /** @type {import('$entities/MaintenanceProfile').default} */
-    export let profile;
+    
+    /**
+     * @typedef {Object} Props
+     * @property {import('$entities/MaintenanceProfile').default} profile
+     */
+
+    /** @type {Props} */
+    let { profile } = $props();
 
     const sortedTagsList = profile.settings.tags.sort((a, b) => a.localeCompare(b));
 </script>
diff --git a/src/components/tags/TagsColorContainer.svelte b/src/components/tags/TagsColorContainer.svelte
index 84d1bf4..3c6a237 100644
--- a/src/components/tags/TagsColorContainer.svelte
+++ b/src/components/tags/TagsColorContainer.svelte
@@ -1,61 +1,68 @@
 <script>
-    /** @type {string} */
-    export let targetCategory = '';
+    
+    /**
+     * @typedef {Object} Props
+     * @property {string} [targetCategory]
+     * @property {import('svelte').Snippet} [children]
+     */
+
+    /** @type {Props} */
+    let { targetCategory = '', children } = $props();
 </script>
 
 <div class="tag-color-container tag-color-container--{targetCategory || 'default'}">
-    <slot></slot>
+    {@render children?.()}
 </div>
 
 <style lang="scss">
     @use '$styles/colors';
 
-    .tag-color-container:is(.tag-color-container--rating) :global(.tag) {
+    .tag-color-container:is(:global(.tag-color-container--rating)) :global(.tag) {
         background-color: colors.$tag-rating-background;
         color: colors.$tag-rating-text;
     }
 
-    .tag-color-container:is(.tag-color-container--spoiler) :global(.tag) {
+    .tag-color-container:is(:global(.tag-color-container--spoiler)) :global(.tag) {
         background-color: colors.$tag-spoiler-background;
         color: colors.$tag-spoiler-text;
     }
 
-    .tag-color-container:is(.tag-color-container--origin) :global(.tag) {
+    .tag-color-container:is(:global(.tag-color-container--origin)) :global(.tag) {
         background-color: colors.$tag-origin-background;
         color: colors.$tag-origin-text;
     }
 
-    .tag-color-container:is(.tag-color-container--oc) :global(.tag) {
+    .tag-color-container:is(:global(.tag-color-container--oc)) :global(.tag) {
         background-color: colors.$tag-oc-background;
         color: colors.$tag-oc-text;
     }
 
-    .tag-color-container:is(.tag-color-container--error) :global(.tag) {
+    .tag-color-container:is(:global(.tag-color-container--error)) :global(.tag) {
         background-color: colors.$tag-error-background;
         color: colors.$tag-error-text;
     }
 
-    .tag-color-container:is(.tag-color-container--character) :global(.tag) {
+    .tag-color-container:is(:global(.tag-color-container--character)) :global(.tag) {
         background-color: colors.$tag-character-background;
         color: colors.$tag-character-text;
     }
 
-    .tag-color-container:is(.tag-color-container--content-official) :global(.tag) {
+    .tag-color-container:is(:global(.tag-color-container--content-official)) :global(.tag) {
         background-color: colors.$tag-content-official-background;
         color: colors.$tag-content-official-text;
     }
 
-    .tag-color-container:is(.tag-color-container--content-fanmade) :global(.tag) {
+    .tag-color-container:is(:global(.tag-color-container--content-fanmade)) :global(.tag) {
         background-color: colors.$tag-content-fanmade-background;
         color: colors.$tag-content-fanmade-text;
     }
 
-    .tag-color-container:is(.tag-color-container--species) :global(.tag) {
+    .tag-color-container:is(:global(.tag-color-container--species)) :global(.tag) {
         background-color: colors.$tag-species-background;
         color: colors.$tag-species-text;
     }
 
-    .tag-color-container:is(.tag-color-container--body-type) :global(.tag) {
+    .tag-color-container:is(:global(.tag-color-container--body-type)) :global(.tag) {
         background-color: colors.$tag-body-type-background;
         color: colors.$tag-body-type-text;
     }
diff --git a/src/components/tags/TagsEditor.svelte b/src/components/tags/TagsEditor.svelte
index 1128683..16c8ab3 100644
--- a/src/components/tags/TagsEditor.svelte
+++ b/src/components/tags/TagsEditor.svelte
@@ -1,17 +1,24 @@
 <script>
+    import { run } from 'svelte/legacy';
+
+    
     /**
-     * List of tags to edit. Any duplicated tags present in the array will be removed on the first edit.
-     * @type {string[]}
+     * @typedef {Object} Props
+     * @property {string[]} [tags] - List of tags to edit. Any duplicated tags present in the array will be removed on the first edit.
      */
-    export let tags = [];
+
+    /** @type {Props} */
+    let { tags = $bindable([]) } = $props();
 
     /** @type {Set<string>} */
-    let uniqueTags = new Set();
+    let uniqueTags = $state(new Set());
 
-    $: uniqueTags = new Set(tags);
+    run(() => {
+        uniqueTags = new Set(tags);
+    });
 
     /** @type {string} */
-    let addedTagName = '';
+    let addedTagName = $state('');
 
     /**
      * Create a callback function to pass into both mouse & keyboard events for tag removal.
@@ -81,14 +88,14 @@
     {#each uniqueTags.values() as tagName}
         <div class="tag">
             {tagName}
-            <span class="remove" on:click={createTagRemoveHandler(tagName)}
-                  on:keydown={createTagRemoveHandler(tagName)}
+            <span class="remove" onclick={createTagRemoveHandler(tagName)}
+                  onkeydown={createTagRemoveHandler(tagName)}
                   role="button" tabindex="0">x</span>
         </div>
     {/each}
     <input type="text"
            bind:value={addedTagName}
-           on:keydown={handleKeyPresses}
+           onkeydown={handleKeyPresses}
            autocomplete="off"
            autocapitalize="none"/>
 </div>
diff --git a/src/components/ui/forms/CheckboxField.svelte b/src/components/ui/forms/CheckboxField.svelte
index fd42593..a4f7101 100644
--- a/src/components/ui/forms/CheckboxField.svelte
+++ b/src/components/ui/forms/CheckboxField.svelte
@@ -1,12 +1,19 @@
 <script>
-    /** @type {string|undefined} */
-    export let name = undefined;
+    
 
-    /** @type {boolean} */
-    export let checked;
+    
+    /**
+     * @typedef {Object} Props
+     * @property {string|undefined} [name]
+     * @property {boolean} checked
+     * @property {import('svelte').Snippet} [children]
+     */
+
+    /** @type {Props} */
+    let { name = undefined, checked = $bindable(), children } = $props();
 </script>
 
 <input type="checkbox" {name} bind:checked={checked}>
 <span>
-    <slot></slot>
+    {@render children?.()}
 </span>
diff --git a/src/components/ui/forms/FormContainer.svelte b/src/components/ui/forms/FormContainer.svelte
index 6b26760..394839d 100644
--- a/src/components/ui/forms/FormContainer.svelte
+++ b/src/components/ui/forms/FormContainer.svelte
@@ -1,5 +1,13 @@
+<script lang="ts">
+    interface Props {
+        children?: import('svelte').Snippet;
+    }
+
+    let { children }: Props = $props();
+</script>
+
 <form>
-    <slot></slot>
+    {@render children?.()}
 </form>
 
 <style lang="scss">
diff --git a/src/components/ui/forms/FormControl.svelte b/src/components/ui/forms/FormControl.svelte
index 6935307..ed8c5d6 100644
--- a/src/components/ui/forms/FormControl.svelte
+++ b/src/components/ui/forms/FormControl.svelte
@@ -1,14 +1,21 @@
 <script>
 
-    /** @type {string|undefined} */
-    export let label = undefined;
+    
+    /**
+     * @typedef {Object} Props
+     * @property {string|undefined} [label]
+     * @property {import('svelte').Snippet} [children]
+     */
+
+    /** @type {Props} */
+    let { label = undefined, children } = $props();
 </script>
 
 <label class="control">
     {#if label}
         <div class="label">{label}</div>
     {/if}
-    <slot></slot>
+    {@render children?.()}
 </label>
 
 <style lang="scss">
diff --git a/src/components/ui/forms/SelectField.svelte b/src/components/ui/forms/SelectField.svelte
index f1e78a8..45581db 100644
--- a/src/components/ui/forms/SelectField.svelte
+++ b/src/components/ui/forms/SelectField.svelte
@@ -1,20 +1,29 @@
 <script>
+    
+
+    
+
+    
+
+    
     /**
-     * @type {string[]|Record<string, string>}
+     * @typedef {Object} Props
+     * @property {string[]|Record<string, string>} [options]
+     * @property {string|undefined} [name]
+     * @property {string|undefined} [id]
+     * @property {string|undefined} [value]
      */
-    export let options = [];
 
-    /** @type {string|undefined} */
-    export let name = undefined;
-
-    /** @type {string|undefined} */
-    export let id = undefined;
-
-    /** @type {string|undefined} */
-    export let value = undefined;
+    /** @type {Props} */
+    let {
+        options = [],
+        name = undefined,
+        id = undefined,
+        value = $bindable(undefined)
+    } = $props();
 
     /** @type {Record<string, string>} */
-    const optionPairs = {};
+    const optionPairs = $state({});
 
     if (Array.isArray(options)) {
         for (let option of options) {
diff --git a/src/components/ui/forms/TagCategorySelectField.svelte b/src/components/ui/forms/TagCategorySelectField.svelte
index a33c1fe..1c0413d 100644
--- a/src/components/ui/forms/TagCategorySelectField.svelte
+++ b/src/components/ui/forms/TagCategorySelectField.svelte
@@ -2,13 +2,19 @@
     import SelectField from "$components/ui/forms/SelectField.svelte";
     import { categories } from "$lib/booru/tag-categories";
 
-    /** @type {string} */
-    export let value = '';
+    
+    /**
+     * @typedef {Object} Props
+     * @property {string} [value]
+     */
+
+    /** @type {Props} */
+    let { value = $bindable('') } = $props();
 
     /** @type {Record<string, string>} */
-    let tagCategoriesOptions = {
+    let tagCategoriesOptions = $state({
         '': 'Default'
-    };
+    });
 
     tagCategoriesOptions = categories.reduce((options, category) => {
         options[category] = category
diff --git a/src/components/ui/forms/TextField.svelte b/src/components/ui/forms/TextField.svelte
index 2a2f54b..4af2e0c 100644
--- a/src/components/ui/forms/TextField.svelte
+++ b/src/components/ui/forms/TextField.svelte
@@ -1,12 +1,18 @@
 <script>
-    /** @type {string|undefined} */
-    export let name = undefined;
+    
 
-    /** @type {string|undefined} */
-    export let placeholder = undefined;
+    
 
-    /** @type {string} */
-    export let value = '';
+    
+    /**
+     * @typedef {Object} Props
+     * @property {string|undefined} [name]
+     * @property {string|undefined} [placeholder]
+     * @property {string} [value]
+     */
+
+    /** @type {Props} */
+    let { name = undefined, placeholder = undefined, value = $bindable('') } = $props();
 </script>
 
 <input type="text" {name} {placeholder} bind:value={value}>
diff --git a/src/components/ui/menu/Menu.svelte b/src/components/ui/menu/Menu.svelte
index 13f0583..2e386c3 100644
--- a/src/components/ui/menu/Menu.svelte
+++ b/src/components/ui/menu/Menu.svelte
@@ -1,5 +1,13 @@
+<script lang="ts">
+    interface Props {
+        children?: import('svelte').Snippet;
+    }
+
+    let { children }: Props = $props();
+</script>
+
 <nav>
-    <slot></slot>
+    {@render children?.()}
 </nav>
 
 <style lang="scss">
diff --git a/src/components/ui/menu/MenuCheckboxItem.svelte b/src/components/ui/menu/MenuCheckboxItem.svelte
index 651bba6..068dcc7 100644
--- a/src/components/ui/menu/MenuCheckboxItem.svelte
+++ b/src/components/ui/menu/MenuCheckboxItem.svelte
@@ -1,30 +1,38 @@
 <script>
+    import { createBubbler, stopPropagation } from 'svelte/legacy';
+
+    const bubble = createBubbler();
     import MenuLink from "$components/ui/menu/MenuItem.svelte";
 
-    /**
-     * @type {boolean}
-     */
-    export let checked;
+    
 
-    /**
-     * @type {string|undefined}
-     */
-    export let name = undefined;
+    
 
-    /**
-     * @type {string|undefined}
-     */
-    export let value = undefined;
+    
 
+    
     /**
-     * @type {string|null}
+     * @typedef {Object} Props
+     * @property {boolean} checked
+     * @property {string|undefined} [name]
+     * @property {string|undefined} [value]
+     * @property {string|null} [href]
+     * @property {import('svelte').Snippet} [children]
      */
-    export let href = null;
+
+    /** @type {Props} */
+    let {
+        checked = $bindable(),
+        name = undefined,
+        value = undefined,
+        href = null,
+        children
+    } = $props();
 </script>
 
 <MenuLink {href}>
-    <input type="checkbox" {name} {value} bind:checked={checked} on:input on:click|stopPropagation>
-    <slot></slot>
+    <input type="checkbox" {name} {value} bind:checked={checked} oninput={bubble('input')} onclick={stopPropagation(bubble('click'))}>
+    {@render children?.()}
 </MenuLink>
 
 <style lang="scss">
diff --git a/src/components/ui/menu/MenuItem.svelte b/src/components/ui/menu/MenuItem.svelte
index 616bfbb..0c19775 100644
--- a/src/components/ui/menu/MenuItem.svelte
+++ b/src/components/ui/menu/MenuItem.svelte
@@ -1,25 +1,34 @@
 <script>
-    /**
-     * @type {string|null}
-     */
-    export let href = null;
+    import { createBubbler } from 'svelte/legacy';
 
-    /**
-     * @type {App.IconName|null}
-     */
-    export let icon = null;
+    const bubble = createBubbler();
+    
 
+    
+
+    
     /**
-     * @type {App.LinkTarget|undefined}
+     * @typedef {Object} Props
+     * @property {string|null} [href]
+     * @property {App.IconName|null} [icon]
+     * @property {App.LinkTarget|undefined} [target]
+     * @property {import('svelte').Snippet} [children]
      */
-    export let target = undefined;
+
+    /** @type {Props} */
+    let {
+        href = null,
+        icon = null,
+        target = undefined,
+        children
+    } = $props();
 </script>
 
-<svelte:element this="{href ? 'a': 'span'}" class="menu-item" {href} {target} on:click role="link" tabindex="0">
+<svelte:element this="{href ? 'a': 'span'}" class="menu-item" {href} {target} onclick={bubble('click')} role="link" tabindex="0">
     {#if icon}
         <i class="icon icon-{icon}"></i>
     {/if}
-    <slot></slot>
+    {@render children?.()}
 </svelte:element>
 
 <style lang="scss">
diff --git a/src/components/ui/menu/MenuRadioItem.svelte b/src/components/ui/menu/MenuRadioItem.svelte
index 1672400..e45b62d 100644
--- a/src/components/ui/menu/MenuRadioItem.svelte
+++ b/src/components/ui/menu/MenuRadioItem.svelte
@@ -1,30 +1,38 @@
 <script>
+    import { createBubbler, stopPropagation } from 'svelte/legacy';
+
+    const bubble = createBubbler();
     import MenuLink from "$components/ui/menu/MenuItem.svelte";
 
-    /**
-     * @type {boolean}
-     */
-    export let checked;
+    
 
-    /**
-     * @type {string}
-     */
-    export let name;
+    
 
-    /**
-     * @type {string}
-     */
-    export let value;
+    
 
+    
     /**
-     * @type {string|null}
+     * @typedef {Object} Props
+     * @property {boolean} checked
+     * @property {string} name
+     * @property {string} value
+     * @property {string|null} [href]
+     * @property {import('svelte').Snippet} [children]
      */
-    export let href = null;
+
+    /** @type {Props} */
+    let {
+        checked,
+        name,
+        value,
+        href = null,
+        children
+    } = $props();
 </script>
 
 <MenuLink {href}>
-    <input type="radio" {name} {value} {checked} on:input on:click|stopPropagation>
-    <slot></slot>
+    <input type="radio" {name} {value} {checked} oninput={bubble('input')} onclick={stopPropagation(bubble('click'))}>
+    {@render children?.()}
 </MenuLink>
 
 <style lang="scss">
diff --git a/src/routes/+layout.svelte b/src/routes/+layout.svelte
index 4ae27b7..4e9e931 100644
--- a/src/routes/+layout.svelte
+++ b/src/routes/+layout.svelte
@@ -1,7 +1,12 @@
-<script>
+<script lang="ts">
     import "../styles/popup.scss";
     import Header from "$components/layout/Header.svelte";
     import Footer from "$components/layout/Footer.svelte";
+    interface Props {
+        children?: import('svelte').Snippet;
+    }
+
+    let { children }: Props = $props();
 
     // Sort of a hack, detect if we rendered in the browser tab or in the popup.
     // Popup will always should have fixed 320px size, otherwise we consider it opened in the tab.
@@ -10,7 +15,7 @@
 
 <Header/>
 <main>
-    <slot/>
+    {@render children?.()}
 </main>
 <Footer/>
 
diff --git a/src/routes/+page.svelte b/src/routes/+page.svelte
index 514140b..59a1d33 100644
--- a/src/routes/+page.svelte
+++ b/src/routes/+page.svelte
@@ -5,9 +5,9 @@
     import MenuCheckboxItem from "$components/ui/menu/MenuCheckboxItem.svelte";
 
     /** @type {import('$entities/MaintenanceProfile').default|undefined} */
-    let activeProfile;
+    let activeProfile = $derived($maintenanceProfiles.find(profile => profile.id === $activeProfileStore));
 
-    $: activeProfile = $maintenanceProfiles.find(profile => profile.id === $activeProfileStore);
+    
 
     function turnOffActiveProfile() {
         $activeProfileStore = null;
diff --git a/src/routes/features/groups/+page.svelte b/src/routes/features/groups/+page.svelte
index c4dc03a..464d2b3 100644
--- a/src/routes/features/groups/+page.svelte
+++ b/src/routes/features/groups/+page.svelte
@@ -1,12 +1,16 @@
 <script>
+    import { run } from 'svelte/legacy';
+
     import Menu from "$components/ui/menu/Menu.svelte";
     import MenuItem from "$components/ui/menu/MenuItem.svelte";
     import { tagGroups } from "$stores/entities/tag-groups";
 
     /** @type {import('$entities/TagGroup').default[]} */
-    let groups = [];
+    let groups = $state([]);
 
-    $: groups = $tagGroups.sort((a, b) => a.settings.name.localeCompare(b.settings.name));
+    run(() => {
+        groups = $tagGroups.sort((a, b) => a.settings.name.localeCompare(b.settings.name));
+    });
 </script>
 
 <Menu>
diff --git a/src/routes/features/groups/[id]/+page.svelte b/src/routes/features/groups/[id]/+page.svelte
index c10af17..69d6e8e 100644
--- a/src/routes/features/groups/[id]/+page.svelte
+++ b/src/routes/features/groups/[id]/+page.svelte
@@ -1,4 +1,6 @@
 <script>
+    import { run } from 'svelte/legacy';
+
     import { goto } from "$app/navigation";
     import { page } from "$app/stores";
     import GroupView from "$components/features/GroupView.svelte";
@@ -8,20 +10,20 @@
 
     const groupId = $page.params.id;
     /** @type {import('$entities/TagGroup').default|null} */
-    let group = null;
+    let group = $state(null);
 
     if (groupId === 'new') {
         goto('/features/groups/new/edit');
     }
 
-    $: {
+    run(() => {
         group = $tagGroups.find(group => group.id === groupId) || null;
 
         if (!group) {
             console.warn(`Group ${groupId} not found.`);
             goto('/features/groups');
         }
-    }
+    });
 </script>
 
 <Menu>
diff --git a/src/routes/features/groups/[id]/edit/+page.svelte b/src/routes/features/groups/[id]/edit/+page.svelte
index 85c2077..3244edf 100644
--- a/src/routes/features/groups/[id]/edit/+page.svelte
+++ b/src/routes/features/groups/[id]/edit/+page.svelte
@@ -16,12 +16,12 @@
     /** @type {TagGroup|null} */
     let targetGroup = null;
 
-    let groupName = '';
+    let groupName = $state('');
     /** @type {string[]} */
-    let tagsList = [];
+    let tagsList = $state([]);
     /** @type {string[]} */
-    let prefixesList = [];
-    let tagCategory = '';
+    let prefixesList = $state([]);
+    let tagCategory = $state('');
 
     if (groupId === 'new') {
         targetGroup = new TagGroup(crypto.randomUUID(), {});
diff --git a/src/routes/features/groups/[id]/export/+page.svelte b/src/routes/features/groups/[id]/export/+page.svelte
index c583fa5..d9b5105 100644
--- a/src/routes/features/groups/[id]/export/+page.svelte
+++ b/src/routes/features/groups/[id]/export/+page.svelte
@@ -14,9 +14,9 @@
     const group = $tagGroups.find(group => group.id === groupId);
 
     /** @type {string} */
-    let rawExportedGroup;
+    let rawExportedGroup = $state();
     /** @type {string} */
-    let encodedExportedGroup;
+    let encodedExportedGroup = $state();
 
     if (!group) {
         goto('/features/groups');
@@ -25,7 +25,7 @@
         encodedExportedGroup = groupTransporter.exportToCompressedJSON(group);
     }
 
-    let isEncodedGroupShown = true;
+    let isEncodedGroupShown = $state(true);
 </script>
 
 <Menu>
diff --git a/src/routes/features/groups/import/+page.svelte b/src/routes/features/groups/import/+page.svelte
index c2cf41b..a29efb3 100644
--- a/src/routes/features/groups/import/+page.svelte
+++ b/src/routes/features/groups/import/+page.svelte
@@ -12,14 +12,14 @@
     const groupTransporter = new EntitiesTransporter(TagGroup);
 
     /** @type {string} */
-    let importedString = '';
+    let importedString = $state('');
     /** @type {string} */
-    let errorMessage = '';
+    let errorMessage = $state('');
 
     /** @type {TagGroup|null} */
-    let candidateGroup = null;
+    let candidateGroup = $state(null);
     /** @type {TagGroup|null} */
-    let existingGroup = null;
+    let existingGroup = $state(null);
 
     function tryImportingGroup() {
         candidateGroup = null;
diff --git a/src/routes/features/maintenance/+page.svelte b/src/routes/features/maintenance/+page.svelte
index 05a4352..f1c9ec4 100644
--- a/src/routes/features/maintenance/+page.svelte
+++ b/src/routes/features/maintenance/+page.svelte
@@ -1,13 +1,17 @@
 <script>
+    import { run } from 'svelte/legacy';
+
     import Menu from "$components/ui/menu/Menu.svelte";
     import MenuItem from "$components/ui/menu/MenuItem.svelte";
     import MenuRadioItem from "$components/ui/menu/MenuRadioItem.svelte";
     import { activeProfileStore, maintenanceProfiles } from "$stores/entities/maintenance-profiles";
 
     /** @type {import('$entities/MaintenanceProfile').default[]} */
-    let profiles = [];
+    let profiles = $state([]);
 
-    $: profiles = $maintenanceProfiles.sort((a, b) => a.settings.name.localeCompare(b.settings.name));
+    run(() => {
+        profiles = $maintenanceProfiles.sort((a, b) => a.settings.name.localeCompare(b.settings.name));
+    });
 
     function resetActiveProfile() {
         $activeProfileStore = null;
diff --git a/src/routes/features/maintenance/[id]/+page.svelte b/src/routes/features/maintenance/[id]/+page.svelte
index c775d46..e091967 100644
--- a/src/routes/features/maintenance/[id]/+page.svelte
+++ b/src/routes/features/maintenance/[id]/+page.svelte
@@ -1,4 +1,6 @@
 <script>
+    import { run } from 'svelte/legacy';
+
     import Menu from "$components/ui/menu/Menu.svelte";
     import MenuItem from "$components/ui/menu/MenuItem.svelte";
     import { page } from "$app/stores";
@@ -9,13 +11,13 @@
 
     const profileId = $page.params.id;
     /** @type {import('$entities/MaintenanceProfile').default|null} */
-    let profile = null;
+    let profile = $state(null);
 
     if (profileId === 'new') {
         goto('/features/maintenance/new/edit');
     }
 
-    $: {
+    run(() => {
         const resolvedProfile = $maintenanceProfiles.find(profile => profile.id === profileId);
 
         if (resolvedProfile) {
@@ -24,11 +26,11 @@
             console.warn(`Profile ${profileId} not found.`);
             goto('/features/maintenance');
         }
-    }
+    });
 
-    let isActiveProfile = $activeProfileStore === profileId;
+    let isActiveProfile = $state($activeProfileStore === profileId);
 
-    $: {
+    run(() => {
         if (isActiveProfile && $activeProfileStore !== profileId) {
             $activeProfileStore = profileId;
         }
@@ -36,7 +38,7 @@
         if (!isActiveProfile && $activeProfileStore === profileId) {
             $activeProfileStore = null;
         }
-    }
+    });
 </script>
 
 <Menu>
diff --git a/src/routes/features/maintenance/[id]/edit/+page.svelte b/src/routes/features/maintenance/[id]/edit/+page.svelte
index 021f324..180a64f 100644
--- a/src/routes/features/maintenance/[id]/edit/+page.svelte
+++ b/src/routes/features/maintenance/[id]/edit/+page.svelte
@@ -16,9 +16,9 @@
     let targetProfile = null;
 
     /** @type {string} */
-    let profileName = '';
+    let profileName = $state('');
     /** @type {string[]} */
-    let tagsList = [];
+    let tagsList = $state([]);
 
     if (profileId === 'new') {
         targetProfile = new MaintenanceProfile(crypto.randomUUID(), {});
diff --git a/src/routes/features/maintenance/[id]/export/+page.svelte b/src/routes/features/maintenance/[id]/export/+page.svelte
index 028a69b..429dbf5 100644
--- a/src/routes/features/maintenance/[id]/export/+page.svelte
+++ b/src/routes/features/maintenance/[id]/export/+page.svelte
@@ -14,9 +14,9 @@
 
     const profilesTransporter = new EntitiesTransporter(MaintenanceProfile);
     /** @type {string} */
-    let exportedProfile = '';
+    let exportedProfile = $state('');
     /** @type {string} */
-    let compressedProfile = '';
+    let compressedProfile = $state('');
 
     if (!profile) {
         goto('/features/maintenance/');
@@ -25,7 +25,7 @@
         compressedProfile = profilesTransporter.exportToCompressedJSON(profile);
     }
 
-    let isCompressedProfileShown = true;
+    let isCompressedProfileShown = $state(true);
 </script>
 
 <Menu>
diff --git a/src/routes/features/maintenance/import/+page.svelte b/src/routes/features/maintenance/import/+page.svelte
index 6b4b31c..d080e0b 100644
--- a/src/routes/features/maintenance/import/+page.svelte
+++ b/src/routes/features/maintenance/import/+page.svelte
@@ -12,14 +12,14 @@
     const profilesTransporter = new EntitiesTransporter(MaintenanceProfile);
 
     /** @type {string} */
-    let importedString = '';
+    let importedString = $state('');
     /** @type {string} */
-    let errorMessage = '';
+    let errorMessage = $state('');
 
     /** @type {MaintenanceProfile|null} */
-    let candidateProfile = null;
+    let candidateProfile = $state(null);
     /** @type {MaintenanceProfile|null} */
-    let existingProfile = null;
+    let existingProfile = $state(null);
 
     function tryImportingProfile() {
         candidateProfile = null;
diff --git a/src/routes/preferences/debug/storage/[...path]/+page.svelte b/src/routes/preferences/debug/storage/[...path]/+page.svelte
index b836071..bc2adb7 100644
--- a/src/routes/preferences/debug/storage/[...path]/+page.svelte
+++ b/src/routes/preferences/debug/storage/[...path]/+page.svelte
@@ -1,15 +1,17 @@
 <script>
+    import { run } from 'svelte/legacy';
+
     import StorageViewer from "$components/debugging/StorageViewer.svelte";
     import { page } from "$app/stores";
     import { goto } from "$app/navigation";
 
-    let pathString = '';
+    let pathString = $state('');
     /** @type {string[]} */
-    let pathArray = [];
+    let pathArray = $state([]);
     /** @type {string|undefined} */
-    let storageName = void 0;
+    let storageName = $state(void 0);
 
-    $: {
+    run(() => {
         pathString = $page.params.path;
         pathArray = pathString.length ? pathString.split("/") : [];
         storageName = pathArray.shift()
@@ -21,7 +23,7 @@
         if (!storageName) {
             goto("/preferences/debug/storage");
         }
-    }
+    });
 </script>
 
 {#if storageName}