Vidtools

Runs in your browser

Resize video

Change your video's resolution or aspect ratio with platform presets for TikTok, Instagram, and YouTube, or an exact custom size. No upload, no watermark.

Drop · pick · paste

Drop a video to start

Your file stays on this device. Nothing uploads.

How it works

  1. 1

    Add your video

    Drop, pick, or paste a file. It stays on your device.

  2. 2

    Pick a size

    Choose 9:16 for TikTok, 1:1, 16:9, 720p, or type an exact width and height, then decide whether to fill the frame or letterbox.

  3. 3

    Download

    Save the resized MP4. No watermark, no signup.

Why nothing uploads

Other tools send your video to their servers, which costs them money per file, so they add watermarks, cap file sizes, and make you sign up. This tool does the work right here in your browser using your own device. Your file is never uploaded, so there is no wait, no watermark, no size limit, and no account.

Questions

How do I make a video 9:16 for TikTok or Reels?
Pick the 9:16 preset (1080×1920). "Fill" crops the sides of a landscape clip to fill the phone screen; "Fit" keeps the whole picture and adds bars instead.
Can I change the resolution to 720p or 1080p?
Yes. Use the 720p preset or a custom size like 1920×1080. Lowering the resolution also makes the file smaller.
Will resizing distort my video?
No. The picture is never stretched: it's either cropped to fill the new shape or letterboxed to fit, whichever you choose.
Does my video get uploaded?
No. Resizing happens in your browser; your file never leaves your device.
Is there a watermark or size limit?
No watermark, no signup, no size cap.

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