Social Video Resizer

Post one video everywhere in the right shape. Pick the networks — Reels, TikTok, Shorts, Instagram feed, YouTube, X, LinkedIn and more — adjust the framing once in the live preview, and export every size in one go.

  • No upload
  • 14 platform presets
  • All sizes at once
  • Free, no watermark

Drop a video here

or

You can also paste with Ctrl+V (⌘+V on Mac).
MP4 · MOV · WebM · MKV · M4V · 3GP · TS

Your videos are processed on your device and are never uploaded.

How it works

How to resize a video for social media

One video in, every format out.

  1. 1

    Open your video

    Drop the video you want to post.

  2. 2

    Pick platforms & framing

    Select Reels, TikTok, YouTube or others. Choose a blurred background or fill, drag to position and check the safe zones.

  3. 3

    Export

    Click “Create videos” and download every size — individually or as a ZIP.

Why ToolCMB

Every size, one click

No more re-editing the same video five times.

14 presets

Instagram Reels, Feed, Square & Stories, TikTok, YouTube & Shorts, Facebook, X, LinkedIn, Pinterest, Snapchat and WhatsApp.

Batch export

Create all selected sizes from one video and download them as a ZIP.

Blurred background

Keep the whole picture and fill the space with a blurred copy — or crop to fill.

Safe zones

See where the app’s buttons and captions will cover your video.

Length limits

Versions for Stories, X and others are trimmed to the allowed length automatically.

Upload-ready

H.264 video with AAC audio at recommended bitrates — accepted everywhere.

Private

Your video is processed on your device and never uploaded.

Free

No watermark, no sign-up.

Social media video sizes (2025)

Every network shows videos in its own shape. Vertical 9:16 (1080 × 1920) fills the screen on TikTok, Reels, Shorts and Stories. The Instagram and Facebook feeds show 4:5 (1080 × 1350) at the largest size, while YouTube and X use landscape 16:9.

When the shape of your video doesn’t match, choose Fit with a blurred background to keep the whole picture, or Fill to crop — then drag the preview so faces and action stay in view. The safe zones show where the app puts buttons, usernames and captions.

Platforms change their limits from time to time. The presets use commonly documented values; if an upload is rejected, check the platform’s current help page.

Recommended sizes and limits

PlatformSizeMax. length (typical)
TikTok1080 × 1920 (9:16)10 min (in-app upload)
Instagram Reels1080 × 1920 (9:16)3 min
YouTube Shorts1080 × 1920 (9:16)3 min
Instagram / Facebook Story1080 × 1920 (9:16)60 s per story
Instagram / Facebook Feed1080 × 1350 (4:5)—
YouTube1920 × 1080 (16:9)—
X (Twitter)1280 × 720 (16:9)2 min 20 s (free accounts)
Pinterest1000 × 1500 (2:3)15 min

Tips

FAQ

Frequently asked questions

Can’t find your answer? Contact us — we reply quickly.

Is my video uploaded?

No. All versions are created in your browser; nothing is sent to our server or any social network.

Can I create versions for several platforms at once?

Yes. Select all the platforms you need; each one becomes its own MP4 file, and you can download them together as a ZIP.

What size is best for Instagram?

Reels and Stories: 1080 × 1920 (9:16). Feed: 1080 × 1350 (4:5) takes the most space, 1080 × 1080 (1:1) is the classic square.

How do I stop the TikTok buttons covering my video?

Turn on “Show safe zones”. Move or zoom the video so faces and text stay outside the red areas.

Will long videos be cut?

Only if “Trim to the platform’s length limit” is on and the video is longer than the preset’s limit; the start of the video is kept. You can also choose which part to use.

Which format do I get?

MP4 with H.264 video and AAC audio — the most widely accepted format on all platforms.

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