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Resize Video with Blurred Background

Fit a video into 9:16, 1:1, 4:5 or 16:9 with a blurred background fill — nothing cropped, in your browser.

选择音频或视频文件

MP3、WAV、M4A、MP4、MOV、WebM —— 用 Whisper 在浏览器中转写

点击选择，或将文件拖到此处

如何 Resize Video with Blurred Background

  1. 1

    Add your video

    Drop in an MP4, MOV or WebM — it's read in your browser, never uploaded.

  2. 2

    Pick a shape

    9:16 for TikTok/Reels/Shorts, 1:1 or 4:5 for Instagram, 16:9 for YouTube.

  3. 3

    Resize and download

    Click Resize video; the full frame is centered over a blurred, scaled copy of itself — nothing cropped.

Related PDF tools

视频裁切将视频裁切为方形、9:16 或 16:9，适用于 Instagram、TikTok、Reels 或 YouTube。Add Watermark to VideonewBurn your logo or a watermark image onto a video — in your browser.Add Text to VideonewBurn custom titles or captions onto a video at a chosen time — in your browser.Add Captions to VideonewAuto-transcribe and burn subtitles into a video with Whisper — in your browser, nothing uploaded.

Resize Video with Blurred Background — 常见问题

Is my video uploaded?+

No. It's resized entirely in your browser.

How is this different from Crop Video?+

Crop cuts off whatever doesn't fit the new shape. This keeps the entire original frame visible, centered over a blurred, scaled-up copy of itself filling the rest — nothing is cut off.

Which shapes are supported?+

9:16 (TikTok, Reels, Shorts), 1:1 and 4:5 (Instagram), and 16:9 (YouTube).

Which browsers work?+

Chrome, Edge and Safari 17+ — the resize needs WebCodecs.

你们会把我的文件上传到服务器吗？+

不会——这里的每个工具都完全在你的设备上处理文件，不会向服务器上传任何内容。唯一的例外是 AI 工具，它们会把提取的文本（而非文件本身）发送给 Claude 来完成工作。

有文件大小限制吗？+

我们没有人为设置限制，但由于处理过程在你的浏览器中进行，非常大的文件（超过 500MB 或 1000 页）会受到你设备内存的限制，而非我们的限制。