# Thumbfa.st

OpenAITools.app のテレメトリ（2026-11-11 検証）によると、Thumbfa.st（thumbfa.st）は AI YouTubeサムネイル生成ツールに分類される AI プラットフォームで、月間 2.06万の訪問を生み出し、前月比のトラフィック増減は +4051（+24.5%）です。主要な地域市場はアメリカ合衆国（トラフィックシェア 25%）で、フリーミアム、有料の料金モデルで運営されています。月間ボリューム別の主な競合代替ツールには ThumbnailCreator.com（月間 9.45万訪問）、ThumbnailMakerr（月間 4580 訪問）、Thumio（月間 1.83万訪問）が含まれます。

Thumbfa.st is an AI thumbnail generator purpose-built for YouTube creators. It keeps your face consistent across every thumbnail by letting you save a reusable person profile, lets you copy the style of any high-performing thumbnail by pasting a YouTube URL, and generates up to four A/B-ready variations at a time in YouTube's exact 1280x720 resolution.

## 主なテレメトリと仕様

| 指標 | 値 |
| :--- | :--- |
| ツール名 | Thumbfa.st |
| ハンドル | thumbfa-st |
| Status | active |
| Origin | independent |
| Maintenance | active |
| 公式ドメイン | thumbfa.st |
| ウェブサイト URL | https://thumbfa.st |
| カテゴリ | AI YouTubeサムネイル生成ツール, AIサムネイル作成ツール, AI YouTube, AI画像生成 |
| 料金モデル | フリーミアム、有料 |
| 月間訪問数 | 20,603 |
| 前月比トラフィック変動 | 4,051 |
| 前月比成長率 | +24.5% |
| 主要市場 | アメリカ合衆国 |
| 市場シェア | 25% |
| ダイレクト訪問 | 8,328 |
| オーガニック検索訪問 | — |
| ソーシャル訪問 | — |
| リファラル訪問 | 2,076 |
| メール訪問 | 577 |
| レビュースコア | 4.2 |
| 保存数 | 1 |
| 対応プラットフォーム | ウェブサイト |
| 請求プラットフォーム |  |
| 属性 | 料金: フリーミアム; 料金: 有料; 機能: ウェブサイト |
| タグ | AIサムネイル生成ツール, YouTubeサムネイル, AI デザイン, コンテンツ制作, 動画マーケティング, A/Bテスト, AI 画像生成, Gemini, OpenAI |

## 概要

Thumbfa.st is an AI thumbnail generator purpose-built for YouTube creators. It keeps your face consistent across every thumbnail by letting you save a reusable person profile, lets you copy the style of any high-performing thumbnail by pasting a YouTube URL, and generates up to four A/B-ready variations at a time in YouTube's exact 1280x720 resolution.

## 料金とプラン

Freemium with paid tiers. Free includes 5 thumbnails, up to 2 at once, 10 inspirations and 2 persons, Gemini only, with a watermark on exports. Pro is about $19/month for 150 thumbnails, up to 4 at once, unlimited inspirations and persons, Gemini plus OpenAI models and no watermark. Ultra is about $49/month for roughly 500 thumbnails. Confirm current pricing on the site.

## 主な機能と特長

- **Face-consistent Person profiles:** Upload your photos once to create a reusable person profile so your likeness stays recognizable across every thumbnail.
- **Copy any thumbnail's style:** Paste a YouTube URL and the tool analyzes that thumbnail's style, colors, text placement and mood, saving it as a reusable inspiration.
- **1-4 variations per generation:** Produce up to four thumbnail variations in a single click so you can compare them side by side or A/B test.
- **Sketch-to-thumbnail editor:** Sketch rough shapes, arrows and labels in the built-in editor and let the AI turn your layout into a finished thumbnail.
- **Podcast Mode:** Podcast Mode swaps guests onto a single recurring template to keep lighting, style and branding consistent across episodes.
- **Ready-to-upload 1280x720 exports:** Every thumbnail exports at YouTube's exact 1280x720 resolution as high-quality PNG, ready to upload with no resizing.

## 主なユースケース

- **Keep one consistent look across uploads (Solo YouTuber):** Upload your face once and generate on-brand, recognizable thumbnails for every upload without re-uploading photos each time.
- **Clone a winning style and A/B test it (Growth-focused creator):** Paste a rival's URL to study their thumbnail style, then generate up to four of your own variations and test which earns more clicks.
- **Swap guests on a repeating template (Podcast producer):** Use Podcast Mode to swap each new guest onto the same template so every episode stays visually consistent with zero redesign.
- **Turn a rough sketch into a finished thumbnail (Social media manager):** Sketch a layout with shapes and labels in the editor and let the AI finish it, useful when you have a clear idea but no design reference.

## 強み

- Face consistency removes the most tedious part of manual thumbnail design
- Template and inspiration copying turns strong competitor thumbnails into usable references
- Up to four variants per run supports genuine A/B testing
- Exports come out at the correct 1280x720 PNG with no resizing
- Supports both Gemini and OpenAI models on paid plans and ships a built-in sketch and pixelate editor

## 制約・デメリット

- Credits are tied to the plan and can run out for heavy publishers
- The free tier is limited to two thumbnails at once and carries a watermark
- Template and inspiration features depend on using content you have the right to reference
- Output still benefits from a quick human check for text accuracy

## よくある質問

### How is Thumbfa.st different from a generic image generator?
It is built specifically for YouTube thumbnails rather than being a general image generator. It focuses on face consistency, copying proven thumbnail styles, up to four variants per generation and correct 1280x720 output.

### How does the face consistency work?
You upload your photos and a description once to create a Person profile. Every future generation can then reference that profile so your likeness stays recognizable.

### Is there a free plan?
You can start free with five thumbnails included, up to two thumbnails at a time, ten inspirations and two person profiles, but exports carry a watermark on the free plan.

### Can I copy the style of a thumbnail I like?
Paste a YouTube URL and Thumbfa.st extracts the thumbnail and analyzes its style, colors, text placement and composition, saving it to your inspiration library to reference later.

### Can I generate multiple variations for A/B testing?
Yes, you can generate up to four variations at once, which is designed to support A/B testing against rival thumbnails.

### What resolution are the thumbnails?
Thumbnails are produced at 1280x720, YouTube's recommended resolution, and downloaded as high-quality PNG files ready for YouTube Studio.

### Thumbfa.st の月間トラフィックと成長トレンドはどうですか？
Thumbfa.st は現在、月間 2.06万の訪問があり、前月比のトラフィック変動は +4051（成長率 +24.5%）です。主要な流入市場はアメリカ合衆国（シェア 25%）で、月間 8328 のダイレクト訪問と月間 — のオーガニック検索訪問を含みます。

### Thumbfa.st は無料ですか？料金モデルは何ですか？
Thumbfa.st はフリーミアム、有料の料金モデルで運営されています。Freemium with paid tiers. Free includes 5 thumbnails, up to 2 at once, 10 inspirations and 2 persons, Gemini only, with a watermark on exports. Pro is about $19/month for 150 thumbnails, up to 4 at once, unlimited inspirations and persons, Gemini plus OpenAI models and no watermark. Ultra is about $49/month for roughly 500 thumbnails. Confirm current pricing on the site. 対応する請求・チェックアウトプラットフォームには未掲載が含まれます。

### 2026年における Thumbfa.st の最適な代替ツールはどれですか？
OpenAITools.app のカテゴリ別トラフィックと機能の適合性に基づくと、Thumbfa.st の代替ツールトップ5は次のとおりです: 1. ThumbnailCreator.com（月間 9.45万訪問）; 2. ThumbnailMakerr（月間 4580 訪問）; 3. Thumio（月間 1.83万訪問）; 4. Thumbspot（月間 798 訪問）; 5. Thumblytics（月間 12.75万訪問）。

### Thumbfa.st はどのプラットフォームと主要な AI 機能に対応していますか？
Thumbfa.st は AI YouTubeサムネイル生成ツール, AIサムネイル作成ツール, AI YouTube, AI画像生成に分類され、以下のプラットフォームに対応しています: ウェブサイト。中核機能のタグには AIサムネイル生成ツール, YouTubeサムネイル, AI デザイン, コンテンツ制作, 動画マーケティング, A/Bテストが含まれます。

## 代替ツール

| ツール名 | 月間訪問数 | 料金モデル | 比較 |
| :--- | :--- | :--- | :--- |
| [ThumbnailCreator.com](https://openaitools.app/ja/tool/thumbnailcreator-com) | 94,461 | Usage-based subscription, Free Trial | [比較](https://openaitools.app/ja/compare/thumbfa-st-vs-thumbnailcreator-com) |
| [ThumbnailMakerr](https://openaitools.app/ja/tool/thumbnailmakerr) | 4,580 | フリーミアム | [比較](https://openaitools.app/ja/compare/thumbfa-st-vs-thumbnailmakerr) |
| [Thumio](https://openaitools.app/ja/tool/thumio) | 18,337 | フリーミアム | [比較](https://openaitools.app/ja/compare/thumbfa-st-vs-thumio) |
| [Thumbspot](https://openaitools.app/ja/tool/thumbspot) | 798 | 無料トライアル、有料 | [比較](https://openaitools.app/ja/compare/thumbfa-st-vs-thumbspot) |
| [Thumblytics](https://openaitools.app/ja/tool/thumblytics) | 127,505 | 有料 | [比較](https://openaitools.app/ja/compare/thumbfa-st-vs-thumblytics) |
| [ThumbnailsPro](https://openaitools.app/ja/tool/thumbnailspro) | 0 | 有料 | [比較](https://openaitools.app/ja/compare/thumbfa-st-vs-thumbnailspro) |
| [AI YouTube Thumbnails](https://openaitools.app/ja/tool/ai-youtube-thumbnails) | 0 | 無料 | [比較](https://openaitools.app/ja/compare/ai-youtube-thumbnails-vs-thumbfa-st) |
| [Pixlr](https://openaitools.app/ja/tool/pixlr) | 9,251,872 | フリーミアム | [比較](https://openaitools.app/ja/compare/pixlr-vs-thumbfa-st) |
| [Image To Image AI](https://openaitools.app/ja/tool/image-to-image-ai) | 222,635 | フリーミアム | [比較](https://openaitools.app/ja/compare/image-to-image-ai-vs-thumbfa-st) |
| [ImageGeneratorAI.io](https://openaitools.app/ja/tool/imagegeneratorai-io) | 199,366 | フリーミアム | [比較](https://openaitools.app/ja/compare/imagegeneratorai-io-vs-thumbfa-st) |
| [Shutterstock AI画像ジェネレーター](https://openaitools.app/ja/tool/shutterstock-com) | 47,855,171 | 有料 | [比較](https://openaitools.app/ja/compare/shutterstock-com-vs-thumbfa-st) |
| [EditTextImage](https://openaitools.app/ja/tool/edittextimage) | 131,449 | フリーミアム | [比較](https://openaitools.app/ja/compare/edittextimage-vs-thumbfa-st) |

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出典: https://openaitools.app/ja/tool/thumbfa-st