diff --git a/demo/app/Sharp/Posts/PostForm.php b/demo/app/Sharp/Posts/PostForm.php
index 142c31637..43859f150 100644
--- a/demo/app/Sharp/Posts/PostForm.php
+++ b/demo/app/Sharp/Posts/PostForm.php
@@ -11,6 +11,8 @@
 use App\Sharp\Utils\Embeds\TableOfContentsEmbed;
 use Code16\Sharp\Form\Eloquent\Uploads\Transformers\SharpUploadModelFormAttributeTransformer;
 use Code16\Sharp\Form\Eloquent\WithSharpFormEloquentUpdater;
+use Code16\Sharp\Form\Fields\Editor\TextInputReplacement\EditorTextInputReplacement;
+use Code16\Sharp\Form\Fields\Editor\TextInputReplacement\EditorTextInputReplacementPreset;
 use Code16\Sharp\Form\Fields\Editor\Uploads\SharpFormEditorUpload;
 use Code16\Sharp\Form\Fields\SharpFormAutocompleteRemoteField;
 use Code16\Sharp\Form\Fields\SharpFormCheckField;
@@ -72,6 +74,10 @@ public function buildFormFields(FieldsContainer $formFields): void
                             ->setMaxFileSize(2)
                             ->setHasLegend()
                     )
+                    ->setTextInputReplacements([
+                        EditorTextInputReplacementPreset::frenchTypography(locale: 'fr', guillemets: true),
+                        new EditorTextInputReplacement('/:\+1:/', '👍'),
+                    ])
                     ->allowFullscreen()
                     ->setMaxLength(2000)
                     ->setHeight(300, 0)
diff --git a/resources/js/form/components/fields/editor/Editor.vue b/resources/js/form/components/fields/editor/Editor.vue
index 165025d40..dfc7621e2 100644
--- a/resources/js/form/components/fields/editor/Editor.vue
+++ b/resources/js/form/components/fields/editor/Editor.vue
@@ -57,6 +57,10 @@
     import EditorHelpText from "@/form/components/fields/editor/EditorHelpText.vue";
     import FormFieldError from "@/form/components/FormFieldError.vue";
     import EditorMaybeFullscreenDialog from "@/form/components/fields/editor/EditorMaybeFullscreenDialog.vue";
+    import { DecorateHiddenCharacters } from "@/form/components/fields/editor/extensions/DecorateHiddenCharacters";
+    import {
+        getTextInputReplacementsExtension
+    } from "@/form/components/fields/editor/extensions/TextInputReplacements";
 
     const emit = defineEmits<FormFieldEmits<FormEditorFieldData>>();
     const props = defineProps<FormFieldProps<FormEditorFieldData>>();
@@ -101,6 +105,13 @@
                 field.markdown && Markdown.configure({
                     breaks: config('sharp.markdown_editor.nl2br'),
                 }),
+                getTextInputReplacementsExtension(field, locale),
+                DecorateHiddenCharacters.configure({
+                    class: cn(
+                        `relative pl-[.125em] cursor-text after:block after:absolute after:top-1/2 after:-translate-y-1/2 after:left-1/2 after:-translate-x-1/2 after:opacity-25`,
+                        `data-[key=nbsp]:after:content-['°']`,
+                    ),
+                }),
                 props.field.uploads && Upload.configure({
                     uploadManager,
                     locale,
@@ -121,7 +132,7 @@
                     ? props.value?.text?.[locale] ?? ''
                     : props.value?.text ?? '',
                 editable: !field.readOnly,
-                enableInputRules: false,
+                enableInputRules: ['textInputReplacements'],
                 enablePasteRules: [Iframe],
                 extensions,
                 injectCSS: false,
diff --git a/resources/js/form/components/fields/editor/extensions/DecorateHiddenCharacters.ts b/resources/js/form/components/fields/editor/extensions/DecorateHiddenCharacters.ts
new file mode 100644
index 000000000..300219d93
--- /dev/null
+++ b/resources/js/form/components/fields/editor/extensions/DecorateHiddenCharacters.ts
@@ -0,0 +1,68 @@
+import { Extension } from "@tiptap/core";
+import { Decoration, DecorationSet } from "@tiptap/pm/view";
+import { Plugin } from "@tiptap/pm/state";
+import { cn } from "@/utils/cn";
+
+export const DecorateHiddenCharacters = Extension.create({
+    name: 'decorateHiddenCharacters',
+
+    addOptions() {
+        return {
+            class: '',
+        }
+    },
+
+
+    addProseMirrorPlugins() {
+        const buildDecorations = (doc) => {
+            const decorations = []
+
+
+            doc.descendants((node, pos) => {
+                if (!node.isText) return true
+
+
+                const text = node.text
+                if (!text) return true
+
+                let idx = text.indexOf('\u00A0')
+                while (idx !== -1) {
+                    const from = pos + idx
+                    const to = from + 1
+                    const deco = Decoration.inline(from, to, {
+                        'data-key': 'nbsp',
+                        class: this.options.class,
+                    })
+                    decorations.push(deco)
+                    idx = text.indexOf('\u00A0', idx + 1)
+                }
+
+
+                return true
+            })
+
+
+            return DecorationSet.create(doc, decorations)
+        }
+
+
+        return [
+            new Plugin({
+                state: {
+                    init(_, { doc }) {
+                        return buildDecorations(doc)
+                    },
+                    apply(tr, old) {
+                        if (!tr.docChanged) return old
+                        return buildDecorations(tr.doc)
+                    },
+                },
+                props: {
+                    decorations(state) {
+                        return this.getState(state)
+                    },
+                },
+            }),
+        ]
+    },
+})
diff --git a/resources/js/form/components/fields/editor/extensions/TextInputReplacements.ts b/resources/js/form/components/fields/editor/extensions/TextInputReplacements.ts
new file mode 100644
index 000000000..2f7b28f87
--- /dev/null
+++ b/resources/js/form/components/fields/editor/extensions/TextInputReplacements.ts
@@ -0,0 +1,26 @@
+import { Extension, textInputRule } from "@tiptap/core";
+import { FormEditorFieldData } from "@/types";
+
+
+export function getTextInputReplacementsExtension(field: FormEditorFieldData, locale: string) {
+    return Extension.create({
+        name: 'textInputReplacements',
+        addInputRules() {
+            return field.textInputReplacements
+                .filter(replacement => !replacement.locale || replacement.locale === locale)
+                .map(replacement => {
+                    const pattern = replacement.pattern.replace(/^\//, '').replace(/\/$/, '').replace(/\$?$/, '$');
+                    try {
+                        return textInputRule({
+                            find: new RegExp(pattern, 'u'),
+                            replace: replacement.replacement,
+                        });
+                    } catch (e) {
+                        console.error(e);
+                    }
+                    return null;
+                })
+                .filter(Boolean);
+        },
+    });
+}
diff --git a/resources/js/form/components/fields/editor/extensions/index.ts b/resources/js/form/components/fields/editor/extensions/index.ts
index 17af376d1..7c0ed32b1 100644
--- a/resources/js/form/components/fields/editor/extensions/index.ts
+++ b/resources/js/form/components/fields/editor/extensions/index.ts
@@ -1,4 +1,4 @@
-import { Extension, getExtensionField, getSchema } from "@tiptap/core";
+import { Extension, getExtensionField, getSchema, textInputRule } from "@tiptap/core";
 import { Document } from '@tiptap/extension-document';
 import { Text } from '@tiptap/extension-text';
 import { Paragraph } from '@tiptap/extension-paragraph';
diff --git a/resources/js/types/generated.d.ts b/resources/js/types/generated.d.ts
index 190d0591d..fa6b53717 100644
--- a/resources/js/types/generated.d.ts
+++ b/resources/js/types/generated.d.ts
@@ -260,7 +260,6 @@ export type FormAutocompleteLocalFieldData = {
   resultItemTemplate: string | null;
   templateData: { [key: string]: any } | null;
   searchKeys: Array<string> | null;
-  localized: boolean | null;
   dynamicAttributes: Array<FormDynamicAttributeData> | null;
   label: string | null;
   readOnly: boolean | null;
@@ -369,6 +368,11 @@ export type FormEditorFieldData = {
   inline: boolean;
   showCharacterCount: boolean;
   allowFullscreen: boolean;
+  textInputReplacements: {
+    pattern: string;
+    replacement: string;
+    locale?: string;
+  }[];
   uploads: FormEditorFieldUploadData | null;
   embeds: { [embedKey: string]: EmbedData };
   toolbar: Array<FormEditorToolbarButton | `embed:${string}`>;
@@ -544,7 +548,6 @@ export type FormSelectFieldData = {
   inline: boolean;
   dynamicAttributes: Array<FormDynamicAttributeData> | null;
   maxSelected: number | null;
-  localized: boolean | null;
   label: string | null;
   readOnly: boolean | null;
   conditionalDisplay: FormConditionalDisplayData | null;
@@ -560,7 +563,6 @@ export type FormTagsFieldData = {
   options: Array<{ id: string | number; label: string }>;
   maxTagCount: number | null;
   placeholder: string | null;
-  localized: boolean | null;
   label: string | null;
   readOnly: boolean | null;
   conditionalDisplay: FormConditionalDisplayData | null;
diff --git a/src/Data/Form/Fields/FormEditorFieldData.php b/src/Data/Form/Fields/FormEditorFieldData.php
index 70101a7f4..b60383c15 100644
--- a/src/Data/Form/Fields/FormEditorFieldData.php
+++ b/src/Data/Form/Fields/FormEditorFieldData.php
@@ -32,6 +32,8 @@ public function __construct(
         public bool $inline,
         public bool $showCharacterCount,
         public bool $allowFullscreen,
+        #[LiteralTypeScriptType('{ pattern: string, replacement: string, locale?: string }[]')]
+        public array $textInputReplacements,
         #[LiteralTypeScriptType('FormEditorFieldUploadData | null')]
         public ?array $uploads = null,
         #[LiteralTypeScriptType('{ [embedKey:string]:EmbedData }')]
diff --git a/src/Form/Fields/Editor/TextInputReplacement/Concerns/ReplacesFrench.php b/src/Form/Fields/Editor/TextInputReplacement/Concerns/ReplacesFrench.php
new file mode 100644
index 000000000..1c728296a
--- /dev/null
+++ b/src/Form/Fields/Editor/TextInputReplacement/Concerns/ReplacesFrench.php
@@ -0,0 +1,23 @@
+<?php
+
+namespace Code16\Sharp\Form\Fields\Editor\TextInputReplacement\Concerns;
+
+use Code16\Sharp\Form\Fields\Editor\TextInputReplacement\EditorTextInputReplacement;
+
+/**
+ * @internal
+ */
+trait ReplacesFrench
+{
+    public static function frenchTypography(
+        ?string $locale = null,
+        bool $nbsp = true,
+        bool $guillemets = false,
+    ): self {
+        return (new self())
+            ->when($nbsp)->add(new EditorTextInputReplacement('/( )[!?:;»]/', ' ', $locale))
+            ->when($guillemets)->add(new EditorTextInputReplacement('/(["«][^\n\S])/', '« ', $locale))
+            ->when($guillemets)->add(new EditorTextInputReplacement('/[«][^\n\S][^»]+([^\n\S]")/', ' »', $locale))
+            ->when($guillemets)->add(new EditorTextInputReplacement('/[«][^\n\S][^»]+(")/', ' »', $locale));
+    }
+}
diff --git a/src/Form/Fields/Editor/TextInputReplacement/EditorTextInputReplacement.php b/src/Form/Fields/Editor/TextInputReplacement/EditorTextInputReplacement.php
new file mode 100644
index 000000000..d2d1917d5
--- /dev/null
+++ b/src/Form/Fields/Editor/TextInputReplacement/EditorTextInputReplacement.php
@@ -0,0 +1,30 @@
+<?php
+
+namespace Code16\Sharp\Form\Fields\Editor\TextInputReplacement;
+
+use Illuminate\Contracts\Support\Arrayable;
+
+class EditorTextInputReplacement implements Arrayable
+{
+    /**
+     * @throws \Exception
+     */
+    public function __construct(
+        protected string $pattern,
+        protected string $replacement,
+        protected ?string $locale = null,
+    ) {
+        if(!str_starts_with($pattern, '/') || !str_ends_with($pattern, '/')) {
+            throw new \Exception("The replacement pattern \"$pattern\" must start and end with a slash");
+        }
+    }
+
+    public function toArray(): array
+    {
+        return [
+            'pattern' => $this->pattern,
+            'replacement' => $this->replacement,
+            'locale' => $this->locale,
+        ];
+    }
+}
diff --git a/src/Form/Fields/Editor/TextInputReplacement/EditorTextInputReplacementPreset.php b/src/Form/Fields/Editor/TextInputReplacement/EditorTextInputReplacementPreset.php
new file mode 100644
index 000000000..b8596d8bd
--- /dev/null
+++ b/src/Form/Fields/Editor/TextInputReplacement/EditorTextInputReplacementPreset.php
@@ -0,0 +1,33 @@
+<?php
+
+namespace Code16\Sharp\Form\Fields\Editor\TextInputReplacement;
+
+use Code16\Sharp\Form\Fields\Editor\TextInputReplacement\Concerns\ReplacesFrench;
+use Illuminate\Contracts\Support\Arrayable;
+use Illuminate\Support\Traits\Conditionable;
+use Illuminate\Support\Traits\Macroable;
+
+class EditorTextInputReplacementPreset implements Arrayable
+{
+    use Conditionable;
+    use Macroable;
+    use ReplacesFrench;
+
+    public function __construct(
+        protected array $replacements = [],
+    ) {}
+
+    public function add(EditorTextInputReplacement $replacement): self
+    {
+        $this->replacements[] = $replacement;
+
+        return $this;
+    }
+
+    public function toArray(): array
+    {
+        return collect($this->replacements)
+            ->map(fn (EditorTextInputReplacement $replacement) => $replacement->toArray())
+            ->all();
+    }
+}
diff --git a/src/Form/Fields/SharpFormEditorField.php b/src/Form/Fields/SharpFormEditorField.php
index 16f7bf86e..ee8dda064 100644
--- a/src/Form/Fields/SharpFormEditorField.php
+++ b/src/Form/Fields/SharpFormEditorField.php
@@ -4,6 +4,8 @@
 
 use Code16\Sharp\Enums\FormEditorToolbarButton;
 use Code16\Sharp\Exceptions\SharpInvalidConfigException;
+use Code16\Sharp\Form\Fields\Editor\TextInputReplacement\EditorTextInputReplacement;
+use Code16\Sharp\Form\Fields\Editor\TextInputReplacement\EditorTextInputReplacementPreset;
 use Code16\Sharp\Form\Fields\Editor\Uploads\FormEditorUploadForm;
 use Code16\Sharp\Form\Fields\Editor\Uploads\SharpFormEditorUpload;
 use Code16\Sharp\Form\Fields\Formatters\EditorFormatter;
@@ -66,6 +68,7 @@ class SharpFormEditorField extends SharpFormField implements IsSharpFieldWithEmb
     protected bool $withoutParagraphs = false;
     protected bool $showCharacterCount = false;
     protected bool $allowFullscreen = false;
+    protected array $textInputReplacements = [];
 
     protected function __construct(string $key, string $type, ?SharpFieldFormatter $formatter = null)
     {
@@ -141,6 +144,13 @@ public function setRenderContentAsMarkdown(bool $renderAsMarkdown = true): self
         return $this;
     }
 
+    public function setTextInputReplacements(array $replacements): self
+    {
+        $this->textInputReplacements = $replacements;
+
+        return $this;
+    }
+
     public function allowFullscreen(bool $allowFullscreen = true): self
     {
         $this->allowFullscreen = $allowFullscreen;
@@ -260,6 +270,12 @@ public function toArray(): array
                 'showCharacterCount' => $this->showCharacterCount,
                 'maxLength' => $this->maxLength,
                 'allowFullscreen' => $this->allowFullscreen,
+                'textInputReplacements' => collect($this->textInputReplacements)
+                    ->flatMap(fn (EditorTextInputReplacement|EditorTextInputReplacementPreset $replacement) => $replacement instanceof EditorTextInputReplacementPreset
+                            ? $replacement->toArray()
+                            : [$replacement->toArray()]
+                    )
+                    ->all(),
                 'uploads' => $this->innerComponentUploadsConfiguration(),
                 'embeds' => $this->innerComponentEmbedsConfiguration(),
             ],
diff --git a/tests/Unit/Form/Fields/SharpFormEditorFieldTest.php b/tests/Unit/Form/Fields/SharpFormEditorFieldTest.php
index ef7e812ce..abd21d32e 100644
--- a/tests/Unit/Form/Fields/SharpFormEditorFieldTest.php
+++ b/tests/Unit/Form/Fields/SharpFormEditorFieldTest.php
@@ -1,6 +1,8 @@
 <?php
 
 use Code16\Sharp\Exceptions\SharpInvalidConfigException;
+use Code16\Sharp\Form\Fields\Editor\TextInputReplacement\EditorTextInputReplacement;
+use Code16\Sharp\Form\Fields\Editor\TextInputReplacement\EditorTextInputReplacementPreset;
 use Code16\Sharp\Form\Fields\Editor\Uploads\SharpFormEditorUpload;
 use Code16\Sharp\Form\Fields\SharpFormEditorField;
 use Code16\Sharp\Tests\Unit\Form\Fields\Formatters\Fixtures\EditorFormatterTestEmbed;
@@ -25,6 +27,7 @@
             'markdown' => false,
             'inline' => false,
             'allowFullscreen' => false,
+            'textInputReplacements' => [],
         ]);
 });
 
@@ -177,3 +180,18 @@
 
     $formField->toArray();
 })->throws(SharpInvalidConfigException::class);
+
+it('allows to define text input replacements', function () {
+    $formField = SharpFormEditorField::make('text')
+        ->setTextInputReplacements([
+            new EditorTextInputReplacementPreset([
+                new EditorTextInputReplacement('/(c)/', '©'),
+            ]),
+            new EditorTextInputReplacement('/(r)/', '®'),
+        ]);
+
+    expect($formField->toArray()['textInputReplacements'])->toEqual([
+        ['pattern' => '/(c)/', 'replacement' => '©', 'locale' => null],
+        ['pattern' => '/(r)/', 'replacement' => '®', 'locale' => null],
+    ]);
+});