diff --git a/app/assets/stylesheets/editor.scss b/app/assets/stylesheets/editor.scss
index c7b50db..5d218c7 100644
--- a/app/assets/stylesheets/editor.scss
+++ b/app/assets/stylesheets/editor.scss
@@ -61,7 +61,7 @@
 	.editor-content {
 		min-height: 480px;
 		p, h1, h2, h3, h4, h5, h6, ul, li, figcaption { outline: #ccc solid thin; }
-		strong, em, del, u, sub, sup { background: #0002; }
+		strong, em, del, u, sub, sup, small { background: #0002; }
 		a { background: #13fefe50; }
 		[data-editor-selected] { outline: #f206f9 solid thick; }
 	}
diff --git a/app/javascript/editor/editor.ts b/app/javascript/editor/editor.ts
index 6bc18df..167d40d 100644
--- a/app/javascript/editor/editor.ts
+++ b/app/javascript/editor/editor.ts
@@ -1,5 +1,8 @@
 import { storeContent, restoreContent, forgetContent } from 'editor/storage'
-import { isDirectChild, moveChildren, safeGetSelection, safeGetRangeAt, setAuxiliaryToolbar, parentBlockNames, clearSelected } from 'editor/utils'
+import {
+	isDirectChild, moveChildren, safeGetSelection, safeGetRangeAt,
+	setAuxiliaryToolbar, parentBlockNames, clearSelected,
+} from 'editor/utils'
 import { types, getValidChildren, getType } from 'editor/types'
 import { setupButtons as setupMarksButtons } from 'editor/types/marks'
 import { setupButtons as setupBlocksButtons } from 'editor/types/blocks'
diff --git a/app/javascript/editor/types.ts b/app/javascript/editor/types.ts
index 3c215a8..8034e3e 100644
--- a/app/javascript/editor/types.ts
+++ b/app/javascript/editor/types.ts
@@ -3,7 +3,7 @@ import { marks } from 'editor/types/marks'
 import { blocks, li, EditorBlock } from 'editor/types/blocks'
 import { parentBlocks } from 'editor/types/parentBlocks'
 import { multimedia } from 'editor/types/multimedia'
-import { blockNames, parentBlockNames } from 'editor/utils'
+import { blockNames, parentBlockNames, safeGetRangeAt, safeGetSelection } from 'editor/utils'
 
 export interface EditorNode {
 	selector: string,
@@ -51,18 +51,69 @@ export const types: { [propName: string]: EditorNode } = {
 
 export function getType (node: Element): { typeName: string, type: EditorNode } | null {
 	for (let [typeName, type] of Object.entries(types)) {
-		if (node.matches(type.selector)) return { typeName, type }
+		if (node.matches(type.selector)) {
+			return { typeName, type }
+		}
 	}
+	
 	return null
 }
 
+// encuentra el primer pariente que pueda tener al type, y retorna un array
+// donde
+//   array[0] = elemento que matchea el type
+//   array[array.len - 1] = primer elemento seleccionado
+export function getValidParentInSelection (args: {
+	editor: Editor,
+	type: string,
+}): Element[] {
+	const sel = safeGetSelection(args.editor)
+	if (!sel) throw new Error('No se donde insertar esto')
+	const range = safeGetRangeAt(sel)
+	if (!range) throw new Error('No se donde insertar esto')
+
+	let list: Element[] = []
+	
+	if (!sel.anchorNode) {
+		throw new Error('No se donde insertar esto')
+	} else if (sel.anchorNode instanceof Element) {
+		list = [sel.anchorNode]
+	} else if (sel.anchorNode.parentElement) {
+		list = [sel.anchorNode.parentElement]
+	} else {
+		throw new Error('No se donde insertar esto')
+	}
+
+	while (true) {
+		const el = list[0]
+		if (!args.editor.contentEl.contains(el)
+			&& el != args.editor.contentEl)
+			throw new Error('No se donde insertar esto')
+		const type = getType(el)
+
+		if (type) {
+			//if (type.typeName === 'contentEl') break
+			//if (parentBlockNames.includes(type.typeName)) break
+			if ((type.type.allowedChildren instanceof Array)
+				&& type.type.allowedChildren.includes(args.type)) break
+		}
+		if (el.parentElement) {
+			list = [el.parentElement, ...list]
+		} else {
+			throw new Error('No se donde insertar esto')
+		}
+	}
+	
+	return list
+}
+
 export function getValidChildren (node: Element, type: EditorNode): Node[] {
 	if (type.allowedChildren === 'ignore-children')
 		throw new Error('se llamó a getValidChildren con un type que no lo permite!')
 	return [...node.childNodes].filter(n => {
 		// si permite texto y esto es un texto, es válido
 		if (n.nodeType === Node.TEXT_NODE)
-			return type.allowedChildren.includes('text')
+			return type.allowedChildren.includes('text') && n.textContent?.length
 
 		// si no es un elemento, no es válido
 		if (!(n instanceof Element))
diff --git a/app/javascript/editor/types/blocks.ts b/app/javascript/editor/types/blocks.ts
index 28f6384..52ad157 100644
--- a/app/javascript/editor/types/blocks.ts
+++ b/app/javascript/editor/types/blocks.ts
@@ -2,9 +2,9 @@ import { Editor } from 'editor/editor'
 import {
 	safeGetSelection, safeGetRangeAt,
 	moveChildren,
-	markNames, parentBlockNames,
+	markNames, blockNames, parentBlockNames,
 } from 'editor/utils'
-import { EditorNode, getType } from 'editor/types'
+import { EditorNode, getType, getValidParentInSelection } from 'editor/types'
 
 export interface EditorBlock extends EditorNode {
 }
@@ -49,40 +49,22 @@ export function setupButtons (editor: Editor): void {
 		buttonEl.addEventListener("click", event => {
 			event.preventDefault()
 
-			const sel = safeGetSelection(editor)
-			if (!sel) return
-			const range = safeGetRangeAt(sel)
-			if (!range) return
+			const list = getValidParentInSelection({ editor, type: name })
 
-			let blockEl = sel.anchorNode
-			while (true) {
-				if (!blockEl) throw new Error('WTF')
-				if (!blockEl.parentElement) throw new Error('No pude encontrar contentEl!') 
-
-				let type = getType(blockEl.parentElement)
-				if (!type) throw new Error('La selección está en algo que no es un type!')
-
-				if (type.typeName === 'contentEl'
-					|| parentBlockNames.includes(type.typeName)
-				) break
-
-				blockEl = blockEl.parentElement
+			// No borrar cosas como multimedia
+			if (blockNames.indexOf(getType(list[1])!.typeName) === -1) {
+				return
 			}
-			if (!(blockEl instanceof Element))
-				throw new Error('La selección no está en un elemento!')
 
-			const parentEl = blockEl.parentElement
-			if (!parentEl) throw new Error('Inesperado')
-
-			let replacementType = blockEl.matches(type.selector)
+			let replacementType = list[1].matches(type.selector)
 				? blocks.paragraph
 				: type
 
 			const el = replacementType.create(editor)
 			replacementType.onClick && replacementType.onClick(editor, el)
-			moveChildren(blockEl, el, null)
-			parentEl.replaceChild(el, blockEl)
-			sel.collapse(el)
+			moveChildren(list[1], el, null)
+			list[0].replaceChild(el, list[1])
+			window.getSelection()?.collapse(el)
 
 			return false
 		})
diff --git a/app/javascript/editor/types/marks.ts b/app/javascript/editor/types/marks.ts
index ac2493a..3790c74 100644
--- a/app/javascript/editor/types/marks.ts
+++ b/app/javascript/editor/types/marks.ts
@@ -27,6 +27,7 @@ export const marks: { [propName: string]: EditorNode } = {
 	super: makeMark('super', 'sup'),
 	mark,
 	link,
+	small: makeMark('small', 'small'),
 }
 
 function recursiveFilterSelection (
diff --git a/app/javascript/editor/types/multimedia.ts b/app/javascript/editor/types/multimedia.ts
index 7fdc0ca..7ebf8e8 100644
--- a/app/javascript/editor/types/multimedia.ts
+++ b/app/javascript/editor/types/multimedia.ts
@@ -1,5 +1,5 @@
 import { Editor } from 'editor/editor'
-import { EditorNode, getType } from 'editor/types'
+import { EditorNode, getValidParentInSelection } from 'editor/types'
 import {
 	safeGetSelection, safeGetRangeAt,
 	markNames, parentBlockNames,
@@ -192,34 +192,11 @@ export function setupButtons (editor: Editor): void {
 	buttonEl.addEventListener('click', event => {
 		event.preventDefault()
 
-		const sel = safeGetSelection(editor)
-		if (!sel) return
-		const range = safeGetRangeAt(sel)
-		if (!range) return
-
-		let blockEl = sel.anchorNode
-		while (true) {
-			if (!blockEl) throw new Error('WTF')
-			if (!blockEl.parentElement) throw new Error('No pude encontrar contentEl!') 
-
-			let type = getType(blockEl.parentElement)
-			if (!type) throw new Error('La selección está en algo que no es un type!')
-
-			if (type.typeName === 'contentEl'
-				|| parentBlockNames.includes(type.typeName)
-			) break
-
-			blockEl = blockEl.parentElement
-		}
-		if (!(blockEl instanceof Element))
-			throw new Error('La selección no está en un elemento!')
-
-		const parentEl = blockEl.parentElement
-		if (!parentEl) throw new Error('Inesperado')
+		const list = getValidParentInSelection({ editor, type: 'multimedia' })
 
 		const el = multimedia.create(editor)
-		multimedia.onClick!(editor, el)
-		parentEl.insertBefore(el, blockEl.nextElementSibling)
+		list[0].insertBefore(el, list[1].nextElementSibling)
+		select(editor, el)
 
 		return false
 	})
diff --git a/app/javascript/editor/types/parentBlocks.ts b/app/javascript/editor/types/parentBlocks.ts
index 9f78042..55a8c3d 100644
--- a/app/javascript/editor/types/parentBlocks.ts
+++ b/app/javascript/editor/types/parentBlocks.ts
@@ -4,7 +4,7 @@ import {
 	moveChildren,
 	blockNames, parentBlockNames,
 } from 'editor/utils'
-import { EditorNode, getType } from 'editor/types'
+import { EditorNode, getType, getValidParentInSelection } from 'editor/types'
 
 function makeParentBlock (tag: string, create: EditorNode["create"]): EditorNode {
 	return {
@@ -45,48 +45,24 @@ export function setupButtons (editor: Editor): void {
 		buttonEl.addEventListener("click", event => {
 			event.preventDefault()
 
-			const sel = safeGetSelection(editor)
-			if (!sel) return
-			const range = safeGetRangeAt(sel)
-			if (!range) return
-
 			// TODO: Esto solo mueve el bloque en el que está el final de la selección
 			// (anchorNode). quizás lo podemos hacer al revés (iterar desde contentEl
 			// para encontrar los bloques que están seleccionados y moverlos/cambiarles
 			// el parentBlock)
 
-			let blockEl = sel.anchorNode
-			while (true) {
-				if (!blockEl) throw new Error('WTF')
-				if (!blockEl.parentElement) throw new Error('No pude encontrar contentEl!') 
-
-				let type = getType(blockEl.parentElement)
-				if (!type) throw new Error('La selección está en algo que no es un type!')
-
-				if (type.typeName === 'contentEl'
-					|| parentBlockNames.includes(type.typeName)
-				) break
-
-				blockEl = blockEl.parentElement
-			}
-			if (!(blockEl instanceof Element))
-				throw new Error('La selección no está en un elemento!')
-
-			const parentEl = blockEl.parentElement
-			if (!parentEl)
-				throw new Error('no')
+			const list = getValidParentInSelection({ editor, type: name })
 
 			const replacementEl = type.create(editor)
-			if (parentEl == editor.contentEl) {
+			if (list[0] == editor.contentEl) {
 				// no está en un parentBlock
-				editor.contentEl.insertBefore(replacementEl, blockEl)
-				replacementEl.appendChild(blockEl)
+				editor.contentEl.insertBefore(replacementEl, list[1])
+				replacementEl.appendChild(list[1])
 			} else {
 				// está en un parentBlock
-				moveChildren(parentEl, replacementEl, null)
-				editor.contentEl.replaceChild(replacementEl, parentEl)
+				moveChildren(list[0], replacementEl, null)
+				editor.contentEl.replaceChild(replacementEl, list[0])
 			}
-			sel.collapse(replacementEl)
+			window.getSelection()?.collapse(replacementEl)
 
 			return false
 		})
diff --git a/app/javascript/editor/utils.ts b/app/javascript/editor/utils.ts
index fd3b082..7ac4c18 100644
--- a/app/javascript/editor/utils.ts
+++ b/app/javascript/editor/utils.ts
@@ -1,7 +1,7 @@
 import { Editor } from 'editor/editor'
 
 export const blockNames = ['paragraph', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'unordered_list', 'ordered_list']
-export const markNames = ['bold', 'italic', 'deleted', 'underline', 'sub', 'super', 'mark', 'link']
+export const markNames = ['bold', 'italic', 'deleted', 'underline', 'sub', 'super', 'mark', 'link', 'small']
 export const parentBlockNames = ['left', 'center', 'right']
 
 export function moveChildren (from: Element, to: Element, toRef: Node | null) {
diff --git a/app/models/metadata_template.rb b/app/models/metadata_template.rb
index 49e432c..5800059 100644
--- a/app/models/metadata_template.rb
+++ b/app/models/metadata_template.rb
@@ -193,7 +193,7 @@ MetadataTemplate = Struct.new(:site, :document, :name, :label, :type,
 
   def allowed_tags
     @allowed_tags ||= %w[strong em del u mark p h1 h2 h3 h4 h5 h6 ul ol li img iframe audio video div figure
-                         figcaption a].freeze
+                         figcaption a sub sup small].freeze
   end
 
   # Decifra el valor
diff --git a/app/views/posts/attributes/_content.haml b/app/views/posts/attributes/_content.haml
index 50da7e9..235dca3 100644
--- a/app/views/posts/attributes/_content.haml
+++ b/app/views/posts/attributes/_content.haml
@@ -47,6 +47,9 @@
         %button.btn{ type: 'button', title: t('editor.sub'), data: { editor_button: 'mark-sub' } }>
           %i.fa.fa-fw.fa-subscript>
           %span.sr-only>= t('editor.sub')
+        %button.btn{ type: 'button', title: t('editor.small'), data: { editor_button: 'mark-small' } }>
+          %i.fa.fa-fw.fa-subscript>
+          %span.sr-only>= t('editor.small')
         %button.btn.mr-0{ type: 'button', title: t('editor.h1'), data: { editor_button: 'block-h1' } }>
           %i.fa.fa-fw.fa-heading>
           1
diff --git a/config/locales/en.yml b/config/locales/en.yml
index cfcaffd..02570b1 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -586,6 +586,7 @@ en:
     link: Link
     super: Superscript
     sub: Subscript
+    small: Small
     h1: Heading 1
     h2: Heading 2
     h3: Heading 3
diff --git a/config/locales/es.yml b/config/locales/es.yml
index dc25d04..5bb4a22 100644
--- a/config/locales/es.yml
+++ b/config/locales/es.yml
@@ -598,6 +598,7 @@ es:
     mark: Resaltado
     super: Índice
     sub: Subíndice
+    small: Chico
     link: Vínculo
     h1: Título 1
     h2: Título 2
diff --git a/tsconfig.json b/tsconfig.json
index 1cb735a..f3d5544 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -2,6 +2,11 @@
   "compilerOptions": {
     "target": "es6",
     "module": "es2015",
+    "moduleResolution": "node",
+    "baseUrl": ".",
+    "paths": {
+        "*": ["node_modules/*", "app/javascript/*"]
+    },
     "strict": true,
     "esModuleInterop": true,
     "skipLibCheck": true,