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nicepkg

thumbnail-concept-generator

by nicepkg

๐Ÿš€ 170+ pre-built skills for Claude Code, Cursor, Codex & 14+ AI tools. Stop re-teaching your AI the same things. One command โ†’ instant domain expertise. Marketing, SEO, Trading, Video, PM workflows included.

โญ 9๐Ÿด 3๐Ÿ“… Jan 24, 2026

SKILL.md


name: thumbnail-concept-generator description: Generate thumbnail concepts and ideas for YouTube, TikTok, and other video platforms. Creates detailed visual briefs with composition, text, colors, and emotion suggestions. Use when planning thumbnails, improving CTR, or briefing designers.

Thumbnail Concept Generator

Create click-worthy thumbnail concepts that maximize CTR.

Thumbnail Psychology

๐Ÿ“Š THUMBNAIL IMPACT:
- 90% of top-performing videos have custom thumbnails
- Thumbnails are responsible for ~50% of a video's click-through rate
- Viewers decide in <2 seconds whether to click

KEY PRINCIPLE: Thumbnail must work at SMALL sizes (mobile, sidebar)

Thumbnail Elements

1. Faces & Emotions

EMOTION SCALE (from most to least effective):
1. ๐Ÿ˜ฑ Shock/Surprise - Wide eyes, open mouth
2. ๐Ÿค” Curiosity - Raised eyebrow, intrigued look
3. ๐Ÿ˜„ Joy/Excitement - Genuine smile, energy
4. ๐Ÿ˜ค Frustration/Anger - Visible emotion
5. ๐Ÿคฏ Mind-blown - Exaggerated reaction
6. ๐Ÿ˜ข Sadness - For emotional content

FACE RULES:
- Eyes should be visible and expressive
- Face takes up 30-50% of thumbnail
- Direct eye contact with camera
- Avoid sunglasses/obstructions

2. Text Overlay

TEXT RULES:
- Maximum 3-4 words
- Large, bold, readable at small size
- Contrasting colors (white on dark, dark on light)
- Don't repeat the title exactly
- Use outline/shadow for readability

EFFECTIVE TEXT:
โœ… "IT WORKED" / "$10K" / "DON'T BUY" / "vs"
โŒ "Watch this video to see what happens when I try..."

3. Color Psychology

RED: Urgency, excitement, warning
YELLOW: Attention, energy, optimism
BLUE: Trust, calm, professional
GREEN: Growth, money, nature
ORANGE: Enthusiasm, creativity
PURPLE: Luxury, creativity
BLACK: Premium, serious, drama
WHITE: Clean, simple, contrast

4. Composition Rules

RULE OF THIRDS: Place key elements at intersection points
Z-PATTERN: Eye travels Z-shape (top-left โ†’ top-right โ†’ bottom-left โ†’ bottom-right)
CONTRAST: Main subject must pop from background
NEGATIVE SPACE: Don't overcrowd - let elements breathe

Thumbnail Templates by Video Type

Tutorial/How-To

โ”Œโ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”
โ”‚  [RESULT/OUTCOME]   โ”‚    FACE      โ”‚
โ”‚  Text: "EASY"       โ”‚  (excited/   โ”‚
โ”‚  or "5 MIN"         โ”‚  helpful)    โ”‚
โ”‚                     โ”‚              โ”‚
โ”‚  [Tool/Product      โ”‚              โ”‚
โ”‚   being used]       โ”‚              โ”‚
โ””โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”˜

Elements:
- Split screen or diagonal divide
- Before/After if applicable
- Tool/product clearly visible
- Helpful/excited facial expression

Reaction/Commentary

โ”Œโ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”
โ”‚                                     โ”‚
โ”‚     [SUBJECT OF REACTION]           โ”‚
โ”‚                                     โ”‚
โ”‚              โ”Œโ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”             โ”‚
โ”‚              โ”‚ FACE   โ”‚             โ”‚
โ”‚              โ”‚ (react)โ”‚             โ”‚
โ”‚              โ””โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”˜             โ”‚
โ”‚     Text: "WHAT?!" or "NO WAY"      โ”‚
โ””โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”˜

Elements:
- Content being reacted to (screenshot, image)
- Your reaction face (corner or overlay)
- Exaggerated emotion
- 1-2 word reaction text

Product Review

โ”Œโ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”
โ”‚    [PRODUCT]        โ”‚    FACE      โ”‚
โ”‚    (hero shot)      โ”‚  (opinion    โ”‚
โ”‚                     โ”‚   expressed) โ”‚
โ”‚    "$XXX"           โ”‚              โ”‚
โ”‚    or "โ˜…โ˜…โ˜…โ˜…โ˜†"      โ”‚  ๐Ÿ‘ or ๐Ÿ‘Ž   โ”‚
โ””โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”˜

Elements:
- Product prominently displayed
- Price or rating visible
- Your verdict (thumbs, expression)
- Clean, studio-style background

Vlog/Story

โ”Œโ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”
โ”‚                                     โ”‚
โ”‚    [DRAMATIC SCENE OR MOMENT]       โ”‚
โ”‚                                     โ”‚
โ”‚    Text: Context/Tease              โ”‚
โ”‚    "IT HAPPENED" / "DAY 30"         โ”‚
โ”‚                                     โ”‚
โ””โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”˜

Elements:
- Key moment from video
- Emotional peak captured
- Curiosity-inducing text
- Real/authentic feel

Comparison (vs)

โ”Œโ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”
โ”‚   [ITEM A]    โ”‚ VS โ”‚   [ITEM B]    โ”‚
โ”‚               โ”‚    โ”‚               โ”‚
โ”‚   $XX         โ”‚    โ”‚   $XXX        โ”‚
โ”‚               โ”‚    โ”‚               โ”‚
โ”‚   [Label]     โ”‚    โ”‚   [Label]     โ”‚
โ””โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”˜

Elements:
- Clear split/division
- Both items equally visible
- VS in center
- Price or key differentiator
- Optional: Winner indicator

Listicle/Top X

โ”Œโ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”
โ”‚                                     โ”‚
โ”‚     "TOP 5"        [Item preview]   โ”‚
โ”‚     or "7 BEST"                     โ”‚
โ”‚                     FACE            โ”‚
โ”‚     [Category]     (excited)        โ”‚
โ”‚                                     โ”‚
โ””โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”˜

Elements:
- Number prominent
- Preview of best/first item
- Your face showing enthusiasm
- Category/topic clear

Concept Output Format

โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•
THUMBNAIL CONCEPT FOR: [Video Title]
Platform: [YouTube/TikTok Cover]
โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•

๐ŸŽจ CONCEPT A (Recommended):
โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€
Layout: [Template type]

Visual Elements:
โ”Œโ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”
โ”‚ [ASCII representation of layout]    โ”‚
โ”‚                                     โ”‚
โ”‚                                     โ”‚
โ””โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”˜

- Background: [Color/setting]
- Main Subject: [What/who is featured]
- Face/Expression: [Emotion to capture]
- Text Overlay: "[Exact text]" - [Font style], [Color]
- Props/Objects: [Items to include]

Colors: Primary [#XXX], Secondary [#XXX], Accent [#XXX]

Why It Works: [Explanation]

๐Ÿ“ธ PHOTO DIRECTION:
- Camera angle: [Eye level/Above/Below]
- Lighting: [Bright/Dramatic/Natural]
- Expression to capture: [Specific direction]
- Pose: [Description]

๐ŸŽจ CONCEPT B (Alternative):
โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€
[Same format, different approach]

๐Ÿ’ก A/B TEST SUGGESTION:
โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€
Test: [Element to test]
Version A: [Description]
Version B: [Description]
Metric: CTR over first 48 hours

โš ๏ธ AVOID:
- [What NOT to do for this specific video]
โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•โ•

How to Use

Quick Concept

Generate thumbnail concepts for a video about [topic]

Detailed Request

Create thumbnail concepts:
- Video title: [title]
- Video type: [tutorial/review/vlog/etc.]
- Target emotion: [shock/curiosity/excitement]
- Must include: [product/face/text]
- Style reference: [channel or style]
- Avoid: [anything specific]

Thumbnail for Existing Video

My video "[title]" is getting low CTR.
Current thumbnail: [describe it]
Suggest improvements.

Thumbnail Checklist

Before finalizing:

  • Readable at small size: Test on mobile
  • Face visible and expressive: If using face
  • Text is 3-4 words max: Large, bold
  • Contrasting colors: Subject pops from background
  • Complements title: Doesn't just repeat it
  • Passes squint test: Recognizable when blurry
  • Brand consistent: Recognizable as your channel
  • Platform appropriate: Right aspect ratio

Common Mistakes

MistakeProblemFix
Too much textUnreadable on mobileMax 3-4 words
Low contrastSubject blends into backgroundUse contrasting colors
Small faceEmotion not visibleFace = 30-50% of frame
ClutteredToo many elementsFocus on 2-3 key elements
Boring expressionNo emotional hookExaggerate emotion
Repeats titleWastes spaceComplement, don't repeat
Generic stock lookDoesn't stand outAdd personality/branding

Thumbnail Dimensions

YouTube: 1280 x 720 px (16:9)
TikTok Cover: 1080 x 1920 px (9:16) - choose key frame
Instagram: 1080 x 1080 px (1:1) for feed

Score

Total Score

75/100

Based on repository quality metrics

โœ“SKILL.md

SKILL.mdใƒ•ใ‚กใ‚คใƒซใŒๅซใพใ‚Œใฆใ„ใ‚‹

+20
โœ“LICENSE

ใƒฉใ‚คใ‚ปใƒณใ‚นใŒ่จญๅฎšใ•ใ‚Œใฆใ„ใ‚‹

+10
โœ“่ชฌๆ˜Žๆ–‡

100ๆ–‡ๅญ—ไปฅไธŠใฎ่ชฌๆ˜ŽใŒใ‚ใ‚‹

+10
โ—‹ไบบๆฐ—

GitHub Stars 100ไปฅไธŠ

0/15
โœ“ๆœ€่ฟ‘ใฎๆดปๅ‹•

1ใƒถๆœˆไปฅๅ†…ใซๆ›ดๆ–ฐ

+10
โ—‹ใƒ•ใ‚ฉใƒผใ‚ฏ

10ๅ›žไปฅไธŠใƒ•ใ‚ฉใƒผใ‚ฏใ•ใ‚Œใฆใ„ใ‚‹

0/5
โœ“Issue็ฎก็†

ใ‚ชใƒผใƒ—ใƒณIssueใŒ50ๆœชๆบ€

+5
โœ“่จ€่ชž

ใƒ—ใƒญใ‚ฐใƒฉใƒŸใƒณใ‚ฐ่จ€่ชžใŒ่จญๅฎšใ•ใ‚Œใฆใ„ใ‚‹

+5
โœ“ใ‚ฟใ‚ฐ

1ใคไปฅไธŠใฎใ‚ฟใ‚ฐใŒ่จญๅฎšใ•ใ‚Œใฆใ„ใ‚‹

+5

Reviews

๐Ÿ’ฌ

Reviews coming soon