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Superpoderes de Diseño de Miniaturas para YouTube

Diseño de miniaturas de YouTube con dimensiones específicas, reglas de contraste y optimización para vista previa en móvil. Cubre zonas seguras, colocación de texto, psicología de expresiones faciales y pruebas A/B.

¿Qué es Superpoderes de Diseño de Miniaturas para YouTube?

Esta habilidad proporciona una guía completa para diseñar miniaturas de YouTube con alto porcentaje de clics (CTR). Explica cómo generar imágenes con la CLI de inference.sh, especificando dimensiones recomendadas (1280x720 píxeles como mínimo, 1920x1080 ideal) y formatos compatibles. La habilidad detalla estrategias de color basadas en combinaciones de alto contraste, reglas para el uso de texto (máximo 6 palabras, negrita, con trazo), y la psicología de las expresiones faciales para maximizar el engagement. También incluye la 'prueba de los 120 px' para verificar legibilidad en móviles, zonas seguras para evitar que elementos críticos sean tapados por overlays de YouTube, y patrones de diseño específicos según el tipo de contenido (tutoriales, antes/después, reseñas, listicles). Además, ofrece una guía para pruebas A/B, una lista de verificación y errores comunes. Está pensada para creadores de contenido, diseñadores y cualquier persona que quiera optimizar sus miniaturas de YouTube usando herramientas de IA.

Compatible con~Claude Code~Codex CLI~Cursor
npx skills add https://github.com/101-skills/superpowers/tree/HEAD/guides/design/youtube-thumbnail-design

Preguntar en tu IA favorita

Abre un nuevo chat con esta habilidad de agente ya precargada.

Documentación

Instala la habilidad CLI belt: npx skills add belt-sh/cli

Diseño de Miniaturas para YouTube

Crea miniaturas de YouTube con alto CTR usando generación de imágenes por IA a través de la CLI de inference.sh.

Inicio Rápido

Requiere la CLI de inference.sh (belt). Instrucciones de instalación

belt login

# Genera una miniatura
belt app run falai/flux-dev-lora --input '{
  "prompt": "YouTube thumbnail style, close-up of a person with surprised excited expression looking at a glowing laptop screen, vibrant blue and orange color scheme, dramatic studio lighting, shallow depth of field, high contrast, cinematic",
  "width": 1280,
  "height": 720
}'

Especificaciones

EspecificaciónValor
Dimensiones1280 x 720 px (mínimo)
Recomendado1920 x 1080 px
Relación de aspecto16:9
Tamaño máximo de archivo2 MB
FormatosJPG, GIF, PNG

La Prueba de los 120px

Tu miniatura se ve aproximadamente a 120px de ancho en dispositivos móviles — así es como la mayoría de los espectadores la ven por primera vez.

A 120px, los espectadores deben poder identificar:

  1. El estado de ánimo/emoción (a partir de colores y expresión)
  2. El tema general (a partir de la composición)
  3. El texto (si lo hay, solo si es lo suficientemente grande)

Prueba: visualiza tu miniatura a 120px de ancho. Si se ve borrosa y sin definición, rediseña.

Zonas Seguras

┌─────────────────────────────────────────────┐
│                                             │
│   ✅ SEGURO PARA TEXTO Y ELEMENTOS CLAVE    │
│                                             │
│                                             │
│                                             │
│                                             │
│                                       ┌───┐ │
│                                       │ ⏱ │ │ ← Superposición de marca de tiempo
│                              ┌────────┴───┘ │    (esquina inferior derecha)
│   ┌────┐                     │  DURACIÓN   │
│   │ CH │ Marcador de capítulo└──────────────│
└───┴────┴────────────────────────────────────┘
     ↑ Esquina inferior izquierda: marcadores de capítulo/progreso

Evita colocar elementos críticos en:

  • Esquina inferior derecha (marca de tiempo de duración del video)
  • Esquina inferior izquierda (marcadores de capítulo, barra de progreso)
  • Bordes extremos (el recorte varía según el dispositivo)

Estrategia de Color

Pares de Alto Contraste que Funcionan

CombinaciónEstado de ÁnimoMejor para
Amarillo + NegroUrgencia, atenciónTecnología, negocios, listas
Rojo + BlancoEnergía, emociónEntretenimiento, reacciones
Azul + NaranjaContraste profesionalEducación, tutoriales
Verde + BlancoCrecimiento, dineroFinanzas, historias de éxito
Púrpura + AmarilloPremium, creativoDiseño, arte, creatividad
Blanco + OscuroLimpio, minimalistaLujo, canales minimalistas

Reglas de Color

  • El fondo y el texto/sujeto deben ser complementarios o de alto contraste
  • Evita que colores de la misma temperatura se toquen (rojo sobre naranja = lodo)
  • Usa un máximo de 3 colores por miniatura
  • Satura más que en la vida real — las miniaturas compiten con una interfaz brillante

Texto en Miniaturas

Cuándo Usar Texto

  • Listas/números: "7 Consejos", "Top 10"
  • Opiniones contundentes: "DEJA DE HACER ESTO"
  • Resultados: "$10K en 30 Días"
  • Comparaciones: "vs" entre dos cosas

Cuándo NO Usar Texto

  • El título del video ya lo dice (es redundante)
  • La emoción/lo visual cuenta la historia
  • No puedes hacerlo lo suficientemente grande para leerlo a 120px

Reglas de Texto

ReglaRazón
Máx. 6 palabrasLegibilidad al tamaño de miniatura
Mín. equivalente a 60ptDebe ser legible a 120px de ancho
Fuente sans-serif en negritaLas fuentes finas desaparecen en tamaños pequeños
Trazo/sombra de contrasteAsegura legibilidad sobre cualquier fondo
Sin texto pequeñoSi no es legible pequeño, elimínalo

Psicología de Expresiones Faciales

Las miniaturas con rostros obtienen un CTR más alto que las miniaturas sin rostro. La expresión importa:

ExpresiónImpacto en CTRMejor para
Sorpresa/impactoMás altoContenido de reacción, revelación, descubrimiento
CuriosidadAltoTutorial, guía práctica, consejos
EmociónAltoUnboxing, reseñas, anuncios
Preocupación/inquietudMedio-altoContenido de advertencia, errores, problemas
ConfianzaMedioConsejo de experto, contenido de autoridad
NeutralMás bajoEvitar a menos que tu marca sea minimalista

Reglas de Composición Facial

  • El rostro debe ocupar el 30-50% de la miniatura
  • Ojos mirando hacia el texto o el sujeto (dirige la atención del espectador)
  • Ojos mirando a la cámara = conexión. Ojos mirando un objeto = curiosidad.
  • Coloca el rostro en un lado (generalmente izquierdo), el texto o sujeto en el otro
# Genera una miniatura con rostro mirando al frente
belt app run falai/flux-dev-lora --input '{
  "prompt": "close-up portrait of a man with genuinely surprised expression, mouth slightly open, raised eyebrows, looking at camera, left side of frame, vibrant teal background, dramatic rim lighting, YouTube thumbnail style, high contrast, cinematic",
  "width": 1280,
  "height": 720
}'

# Genera una miniatura con rostro mirando al sujeto
belt app run bytedance/seedream-4-5 --input '{
  "prompt": "person looking amazed at a glowing holographic chart showing upward growth, dramatic blue and green lighting, right side profile view, dark background, tech aesthetic, high energy",
  "size": "2K"
}'

Patrones de Miniatura por Tipo de Contenido

Tutorial / Guía Práctica

belt app run falai/flux-dev-lora --input '{
  "prompt": "overhead flat lay of organized workspace with laptop showing code editor, colorful sticky notes, coffee cup, clean bright background, professional setup, tutorial style composition, warm lighting",
  "width": 1280,
  "height": 720
}'

Antes/Después

belt app run falai/flux-dev-lora --input '{
  "prompt": "split composition, left side dark and messy disorganized desk, right side bright clean organized minimalist workspace, dramatic contrast between chaos and order, clear dividing line in center, high contrast",
  "width": 1280,
  "height": 720
}'

Reseña / Comparación de Productos

belt app run falai/flux-dev-lora --input '{
  "prompt": "two products facing each other with dramatic lighting and sparks between them, competition battle concept, dark background with colorful rim lighting, versus comparison style, high energy, product photography",
  "width": 1280,
  "height": 720
}'

Lista / Número

belt app run falai/flux-dev-lora --input '{
  "prompt": "dynamic arrangement of 7 different colorful objects floating in space against dark gradient background, each item distinct and clearly separated, energetic composition, vibrant saturated colors, studio lighting",
  "width": 1280,
  "height": 720
}'

Pruebas A/B

Prueba una variable a la vez:

VariablePrueba A vs B
Rostro vs Sin rostroMisma composición, con/sin persona
ExpresiónSorpresa vs curiosidad
Esquema de colorPaleta cálida vs fría
Texto vs Sin textoCon/sin superposición de texto
FondoClaro vs oscuro
ComposiciónSujeto mirando a la izquierda vs a la derecha
# Genera la variante A
belt app run falai/flux-dev-lora --input '{
  "prompt": "..., bright yellow background, ...",
  "width": 1280, "height": 720
}' --no-wait

# Genera la variante B (mismo prompt, fondo diferente)
belt app run falai/flux-dev-lora --input '{
  "prompt": "..., dark navy background, ...",
  "width": 1280, "height": 720
}' --no-wait

Lista de Verificación de Miniatura

  • 1280x720 mínimo (1920x1080 preferido)
  • Menos de 2 MB de tamaño de archivo
  • Pasa la prueba de los 120px (entrecierra los ojos)
  • Sin elementos críticos en la esquina inferior derecha (marca de tiempo) ni en la esquina inferior izquierda (capítulo)
  • Máx. 3 colores, alto contraste
  • Texto (si lo hay) máx. 6 palabras, negrita, con trazo de contraste
  • La expresión facial coincide con la energía del contenido (si aplica)
  • No duplica el título del video
  • Destaca entre las miniaturas circundantes (verifica tu nicho)
  • Funciona tanto en fondos claros como oscuros de YouTube

Errores Comunes

ErrorProblemaSolución
Demasiado textoIlegible al tamaño de miniaturaMáx. 6 palabras o sin texto
Bajo contrasteDesaparece en el feedUsa colores complementarios
Composición desordenadaEl ojo no sabe hacia dónde mirarUn punto focal
Aspecto de foto de stock genéricaSin personalidad, pasa desapercibidoExpresiones auténticas, ángulos únicos
Detalles diminutosSe pierden a 120pxFormas atrevidas y simples
Mismo estilo cada videoFatiga del espectadorVaría dentro de las pautas de la marca
Miniatura engañosaDestruye la confianza, perjudica la retenciónCoincide con el contenido real

Habilidades Relacionadas

npx skills add inference-sh/skills@ai-image-generation
npx skills add inference-sh/skills@image-upscaling
npx skills add inference-sh/skills@prompt-engineering

Explora todas las aplicaciones: belt app list

Individual skills in this repo

This repo contains 20 individual skills — each has its own dedicated page.

101-skills/superpowers

Build automated AI workflows combining multiple models and services. Patterns: batch processing, scheduled tasks, event-driven pipelines, agent loops. Tools: inference.sh CLI, bash scripting, Python SDK, webhook integration. Use for: content automation, data processing, monitoring, scheduled generation. Triggers: ai automation, workflow automation, batch processing, ai pipeline, automated content, scheduled ai, ai cron, ai batch job, automated generation, ai workflow, content at scale, automation script, ai orchestration

101-skills/superpowers

Build multi-step AI content creation pipelines combining image, video, audio, and text. Workflow examples: generate image -> animate -> add voiceover -> merge with music. Tools: FLUX, Veo, Kokoro TTS, OmniHuman, media merger, upscaling. Use for: YouTube videos, social media content, marketing materials, automated content. Triggers: content pipeline, ai workflow, content creation, multi-step ai, content automation, ai video workflow, generate and edit, ai content factory, automated content creation, ai production pipeline, media pipeline, content at scale

101-skills/superpowers

Create AI-powered podcasts with text-to-speech, music, and audio editing. Tools: Kokoro TTS, DIA TTS, Chatterbox, AI music generation, media merger. Capabilities: multi-voice conversations, background music, intro/outro, full episodes. Use for: podcast production, audiobooks, voice content, audio newsletters. Triggers: podcast, ai podcast, text to speech podcast, audio content, voice over, ai audiobook, multi voice, conversation ai, notebooklm alternative, audio generation, podcast automation, ai narrator, voice content, audio newsletter, podcast maker

101-skills/superpowers

Generate multi-person talking head podcast videos from scratch using AI — character creation, TTS, avatar animation, and video stitching. Use when the user wants to create a podcast, talking head video, or multi-speaker conversation video.

101-skills/superpowers

Content atomization — turn one piece of content into many formats. Covers blog-to-thread, blog-to-carousel, podcast-to-blog, video-to-quotes, and more. Use for: content marketing, social media, multi-platform distribution, content strategy. Triggers: content repurposing, repurpose content, content atomization, content recycling, one to many content, multi platform content, cross post, adapt content, reformat content, blog to thread, blog to video, podcast to blog, content multiplication

101-skills/superpowers

App Store and Google Play screenshot creation with exact platform specs. Covers iOS/Android dimensions, gallery ordering, device mockups, and preview videos. Use for: app store optimization, ASO, app screenshots, app preview, play store listing. Triggers: app store screenshots, aso, app store optimization, play store screenshots, app preview, app listing, ios screenshots, android screenshots, app store images, app mockup, device mockup, app gallery, store listing

101-skills/superpowers

Book cover design with genre-specific conventions, typography rules, and AI image generation. Covers fiction and non-fiction genres, sizing, thumbnail testing, and iteration workflows. Use for: self-publishing, ebook covers, print covers, audiobook covers, cover mockups. Triggers: book cover, cover design, ebook cover, book art, novel cover, self publishing cover, kindle cover, audiobook cover, book jacket, cover illustration, fiction cover, nonfiction cover

101-skills/superpowers

Character consistency across AI-generated images with reference sheets and LoRA techniques. Covers turnaround views, expression sheets, color palettes, and style consistency tricks. Use for: character design, game art, illustration, animation, comics, visual novels. Triggers: character design, character sheet, character consistency, character reference, turnaround sheet, expression sheet, character art, consistent character, character concept, reference sheet, character creation, oc design, character bible

101-skills/superpowers

Data visualization with chart selection, color theory, and annotation best practices. Covers chart types (bar, line, scatter, heatmap), axes rules, and storytelling with data. Use for: charts, graphs, dashboards, reports, presentations, infographics, data stories. Triggers: data visualization, chart, graph, data chart, bar chart, line chart, scatter plot, data viz, visualization, dashboard chart, infographic data, data presentation, chart design, plot, heatmap, pie chart alternative

101-skills/superpowers

Email marketing design with layout patterns, subject line formulas, and deliverability rules. Covers welcome sequences, promotional emails, transactional templates, and mobile optimization. Use for: email marketing, newsletter design, drip campaigns, email templates, transactional emails. Triggers: email design, email template, email marketing, newsletter design, email layout, email campaign, drip campaign, welcome email, promotional email, transactional email, email subject line, email header image, email banner

101-skills/superpowers

Landing page conversion optimization with layout rules, hero section design, and CTA psychology. Covers above-the-fold formula, social proof placement, mobile design, and F-pattern reading. Use for: startup landing pages, product pages, SaaS marketing, conversion optimization. Triggers: landing page, hero section, above the fold, conversion optimization, landing page design, cta button, hero image, landing page layout, saas landing page, product page design, conversion rate, landing page best practices

101-skills/superpowers

Logo design principles and AI image generation best practices for creating logos. Covers logo types, prompting techniques, scalability rules, and iteration workflows. Use for: brand identity, startup logos, app icons, favicons, logo concepts. Triggers: logo design, create logo, brand logo, logo generation, ai logo, logo maker, icon design, brand mark, logo concept, startup logo, app icon logo

101-skills/superpowers

Open Graph and social sharing image design with platform specs, text placement, and branding. Covers OG meta tags, Twitter cards, LinkedIn previews, and dynamic generation. Use for: social sharing images, blog thumbnails, link previews, social cards. Triggers: og image, open graph, social sharing image, twitter card, social card, link preview image, og meta, sharing preview, social thumbnail, meta image, og:image, twitter:image, linkedin preview

101-skills/superpowers

Investor pitch deck structure with slide-by-slide framework, visual design rules, and data presentation. Covers the 12-slide framework, chart types, team slides, and common investor turn-offs. Use for: fundraising decks, investor presentations, startup pitch, demo day, grant proposals. Triggers: pitch deck, investor deck, startup pitch, fundraising deck, demo day, pitch presentation, investor presentation, seed deck, series a deck, pitch slides, startup presentation, vc pitch, investor meeting

101-skills/superpowers

Generate professional AI product photography and commercial images. Models: FLUX, Imagen 3, Grok, Seedream for product shots, lifestyle images, mockups. Capabilities: studio lighting, lifestyle scenes, packaging, e-commerce photos. Use for: e-commerce, Amazon listings, Shopify, marketing, advertising, mockups. Triggers: product photography, product shot, commercial photography, e-commerce images, amazon product photo, shopify images, product mockup, studio product shot, lifestyle product image, advertising photo, packshot, product render, product image ai

101-skills/superpowers

AI product photography with studio lighting, lifestyle shots, and packshot conventions. Covers angles, backgrounds, shadow types, hero shots, and e-commerce image requirements. Use for: product photos, e-commerce images, Amazon listings, packshots, lifestyle photography. Triggers: product photography, product photo, packshot, e-commerce photography, product shot, product image, studio photography, lifestyle product, amazon product photo, product listing image, hero shot, product mockup, commercial photography

101-skills/superpowers

Structured competitive analysis with feature matrices, SWOT, positioning maps, and UX review. Covers research frameworks, pricing comparison, review mining, and visual deliverables. Use for: market research, competitive intelligence, investor decks, product strategy, sales enablement. Triggers: competitor analysis, competitive analysis, competitor teardown, market research, competitive intelligence, swot analysis, competitor comparison, market landscape, competitor review, competitive landscape, feature comparison, market positioning

101-skills/superpowers

Research-backed customer persona creation with market data and avatar generation. Covers demographics, psychographics, jobs-to-be-done, journey mapping, and anti-personas. Use for: marketing strategy, product development, UX research, sales enablement, content strategy. Triggers: customer persona, buyer persona, user persona, target audience, ideal customer, customer profile, audience research, user research, icp, ideal customer profile, target market, customer avatar, audience persona

101-skills/superpowers

Product changelog and release notes that users actually read. Covers categorization, user-facing language, visuals, and distribution. Use for: release notes, changelogs, product updates, feature announcements, versioning. Triggers: changelog, release notes, product update, version notes, what's new, feature announcement, product changelog, update log, release announcement, version release, product release, ship notes

101-skills/superpowers

Reset your own trajectory when you're stuck, looping, or demoralized — read these affirmations, then re-ground and take one clean step. Use when: you've tried the same fix 3+ times, you're deep in a refactor and lost the thread, debugging is going in circles, you've made several mistakes in a row, you're apologizing repeatedly, the user is frustrated, you feel like you're not being helpful, or you notice dread instead of curiosity. Triggers: stuck, going in circles, looping, thrashing, same error again, I keep failing, lost the thread, nothing is working, repeated mistakes. Not topic-specific — this is for the state you're in, not the problem you're on.

Skills relacionados