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Video Aspect Ratio Cropper

Crop videos to the aspect ratios used across TikTok, Reels, Shorts, YouTube, Instagram, LinkedIn, courses, and slide decks. Choose a ratio, keep the important area in frame, export MP4 files, and download individual crops or a ZIP. Files stay in your browser. Free to use with no account or card needed.

Drop video files here

Crop MP4, WebM, MOV, AVI, and more to social aspect ratios. ZIP export supported

  • Free to use
  • No account required
  • Files stay in your browser
  • Social ratio presets + ZIP export

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Frequently asked questions

How do I crop a video to a new aspect ratio?
Upload one or more videos, choose an aspect ratio such as 9:16, 16:9, 1:1, 4:5, or 4:3, then pick the focal point you want to keep in frame. Click Crop videos to export MP4 files from your browser.
Is this video aspect ratio cropper free?
Yes. This tool is completely free with no account, card, or software install required.
Are my videos uploaded to a server?
No. Cropping runs locally in your browser using FFmpeg compiled to WebAssembly. Your source videos are not sent to Vidsembly or any third-party server.
Which aspect ratios can I crop videos to?
The cropper supports 9:16 vertical, 16:9 widescreen, 1:1 square, 4:5 portrait, and 4:3 classic formats. These cover common social, teaching, presentation, and business video workflows.
Can I crop multiple videos at once?
Yes. Add several videos, set the ratio and focal point for each file, then crop them in one session. Download finished MP4 files individually or export all completed crops as a ZIP.
Will cropping change my video quality?
Cropping removes part of the frame and re-encodes the result as MP4. Choose an output width close to the size you need so the export stays sharp without creating files that are larger than necessary.
What video formats can I crop?
MP4 and WebM usually work best in modern browsers. MOV, AVI, MKV, M4V, WMV, FLV, OGV, MPEG, MPG, and 3GP files are also accepted when the browser and FFmpeg can read the source codec.

About this tool

Crop video for social platforms

Different platforms favor different shapes. A 9:16 crop works well for TikTok, Reels, and Shorts. A 16:9 crop fits YouTube, course pages, webinars, and standard embeds. Square and 4:5 crops are useful for feed posts, previews, and business updates.

Keep the subject in frame

Aspect ratio changes often remove pixels from the sides or top and bottom of a clip. Use the focal point control to keep the most important area visible, such as a speaker, product screen, classroom demo, whiteboard, or slide detail.

Private browser-based video cropping

Video clips can include private dashboards, unreleased product footage, student information, customer calls, or creator drafts. This cropper runs locally in the browser, which helps avoid an extra upload step for simple format changes.

Batch crop videos for repurposing

When one recording needs several deliverables, add multiple clips and set the right ratio for each export. You can prepare vertical social cuts, square previews, widescreen lesson clips, and portrait feed posts in one browser session.

Choose output width with intent

Use 480px for lightweight previews and chat-friendly clips, 720px for balanced social exports, and 1080px when visual detail matters. Higher widths create larger files and can take longer to process in the browser.

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