Pixelcut
A collage showing the same video of a woman on a mountain displayed in different video formats: widescreen, vertical, and square, representing a video resizer tool.

AI-Powered TikTok Video Resizer

7000万人に信頼されています
171,800件のレビュー
開発者API
iPhoneAndroid で利用可能

How to Resize a Video for TikTok

  1. 1

    Upload your video

    Start by selecting the video file you want to adapt for TikTok. You can upload a clip in any format or aspect ratio.

  2. 2

    Enter your prompt

    Tell the AI how to edit your video. For example, type 'Resize this for TikTok' or 'Change this to a 9:16 vertical video'.

  3. 3

    Generate your video

    With one click, the AI will process your request, intelligently cropping and reframing your footage to the optimal TikTok dimensions.

  4. 4

    Download your video

    Your resized video is ready to download as a high-resolution MP4 file. Share it directly to your TikTok profile and watch the engagement roll in.

Stop letting awkward black bars ruin your content. The ideal aspect ratio for TikTok is 9:16, and our tool ensures your video fits perfectly within that vertical frame. By automatically adjusting your video, you create a more immersive viewing experience that captures and holds audience attention. Whether you're repurposing a horizontal YouTube video or a square Instagram post, our resizer intelligently crops and frames your footage to look native to the TikTok platform, helping your content perform its best.

Perfect Aspect Ratio, Every Time

A visual representation of video resizing, featuring three frames of a golden retriever puppy formatted in wide, square, and vertical aspect ratios against a white background.
Forget downloading complicated video editing software. Pixelcut’s TikTok resizer works directly in your browser, making it fast and incredibly easy to use. The process is simple: upload your video, type your instructions, and generate. Our AI handles the technical adjustments for you, so you can resize your clips in just a few clicks. This streamlined workflow allows you to prepare more content in less time, helping you stay consistent and active on the platform without the headache of manual editing.

Fast, Simple, and Online

A laptop, smartphone, and tablet arranged side-by-side, each showing the same video of a surfer but resized to fit their different screen shapes, illustrating the concept of a video resizer.
Resizing a video shouldn't mean sacrificing its quality. Our tool is designed to adjust your video's dimensions while preserving its clarity and resolution. Upload your horizontal or off-sized clips and our AI will reframe them to the recommended 1080x1920 pixels for TikTok, ensuring your final video looks crisp and professional on any mobile screen. This means you can share high-quality content that looks great and performs even better, without worrying about pixelation or blurriness.

Maintain Quality, Maximize Impact

A conceptual image illustrating video resizing, showing multiple video frames of a tropical beach sunset, each frame a different size and aspect ratio, against a plain white background.
It’s Instant: Go from any video format to the perfect TikTok size in seconds. It’s AI-Powered: Our AI intelligently reframes your video to keep the main subject in focus. It’s Easy: No more complex settings. Just upload your video and tell the AI to resize it for TikTok. High-Quality Output: Download your perfectly sized video in high-resolution MP4 format, ready to go viral. Browser-Based: Resize videos on any device without downloading any software.

Why use Pixelcut's AI TikTok Resizer?

A conceptual image showing a central photo of a mountain biker, with three smaller versions around it cropped to different aspect ratios (vertical, square, and wide) to represent video resizing, all on a clean white background.
Repurpose YouTube Content: Transform your 16:9 landscape videos into engaging 9:16 vertical clips perfect for TikTok. Adapt Instagram Posts: Easily convert your square (1:1) or portrait (4:5) Instagram videos into the full-screen TikTok format. Optimize Ad Campaigns: Ensure your video ads meet TikTok's vertical specifications for maximum screen real estate and better engagement. Standardize Mobile Footage: Correct videos filmed in the wrong orientation or aspect ratio, ensuring they look native to the TikTok feed.

TikTok Resizer Use Cases

A smartphone, tablet, and computer monitor arranged side-by-side, each showing the same video of a surfer but resized to fit their different screen dimensions, illustrating the concept of a video resizer.

よくある質問

Pixelcutは200万人以上に愛されています

  • 私のお気に入りのアプリ

    素晴らしいアプリ、使いやすい。中小企業がさまざまなマーケティング資料を専門的に作成するための時間と費用を節約できるようになります。ありがとう。
    シェイリン D.
  • 最高の背景除去剤

    私の仕事には優れた背景除去剤が必要で、私はそれをすべて経験してきました。これは今のところ最高です。使い方はとても簡単で、結果は常に素晴らしいものになります。ピクセルカットさん、ありがとうございます!
    キラ・H
  • 大好きです

    驚くほど簡単で、バッグやアクセサリーに完璧な結果が得られます。プロのカメラマンが撮影したようです。
    メアリー J.