What size is a YouTube thumbnail?

1280×720 pixels (16:9). This tool exports a ready-to-upload PNG at that size.

Does the AI generate the text?

No. The AI generates the background image only. The tool overlays real text so it stays crisp.

How do I avoid unreadable text?

Keep headlines short (3–6 words), use high contrast, and choose a bold text style preset.

Why did the background image include letters anyway?

Some models still “hallucinate” text. Regenerate with a simpler prompt and keep “no text / no letters” in mind.

Is there a watermark or signup?

No signup. Exports are clean PNG files with no watermarks.

Do I need an account to use this tool?

No. You can use GPTAI.host tools without signing up or logging in.

How do I get better-looking images/designs?

Specify the subject, style (e.g. minimal, cinematic), lighting, composition, and what to avoid. If text looks messy, keep designs text-light and add text later in an editor.

Is it safe to paste sensitive content?

Avoid submitting passwords, private keys, or confidential personal/business data. Your input must be processed to generate an output and may pass through third-party AI services.

Can I use the output commercially?

Usually yes, but it depends on your use case and the underlying AI/provider terms. If you need legal certainty (logos, trademarks, medical/legal), review the output carefully and consult a professional.

Free AI YouTube Thumbnail Generator

Create attention-grabbing YouTube thumbnails that boost clicks

Thumbnail Configuration

Video Topic

Generated YouTube Thumbnails

Image Preview Area

Your YouTube thumbnails will appear here

Configure the options on the left and click "Generate" to create your thumbnail

How to Use the AI YouTube Thumbnail Generator

Enter Title

Input your video title or main message for the thumbnail

Select Style

Choose thumbnail style - bold clickbait, clean minimal, or professional

Choose Elements

Pick elements (arrows, icons, face reaction) and choose a text style preset for the overlay

Generate & Download

Create high-CTR thumbnail and download for maximum video views

YouTube Thumbnail Design Ideas

I Tried This for 7 Days

Entertainment

Bold Eye-Catching · High Contrast · Face Reaction

Learn Python in 10 Minutes

Education

Clean Professional · High Contrast · Graphics/Icons

iPhone Review: Worth It?

Tech/Gaming

Clean Professional · Vibrant Pop · Graphics/Icons

30-Day Fitness Challenge

Fitness

Bright Colorful · Vibrant Pop · Arrows/Emojis

Easy Dinner in 15 Minutes

Cooking

Bright Colorful · Bright Happy · Clean Minimal

Make Money Online (Beginner)

Business

Bold Eye-Catching · High Contrast · Arrows/Emojis

Deliverables (ready-to-use files)

Finished PNG export

One-click download of a ready-to-upload 1280×720 PNG (16:9).

Real text overlay

Text is rendered by the tool (not AI-drawn), so it stays crisp.

Text-safe composition

Background prompt encourages negative space for better readability.

Export notes: 1280×720 (1.8:1), PNG.

YouTube thumbnail FAQs

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Example input & output

Example input

Topic: 10 AI tools to speed up content creation
Style: high-contrast, bold typography area
Mood: energetic, modern

Example output

A thumbnail-style visual layout optimized for attention and readability.