# Merge Videos

Put your clips in order and get one video with picture and sound in sync.

URL: https://shortformkit.com/merge-videos/
Updated: 2026-10-13

Add the clips, sort them with the arrows and merge. The first clip sets the size and frame rate, so start with the one in the format you want. Clips without sound get silence, so picture and sound stay in sync all the way through.

The conversion runs inside your browser with WebCodecs, the video engine built into modern browsers. That is why there is no upload, no queue and no file size limit set by us: only your device's memory limits it. Your file stays private.

Planning an export for a platform? Work out bitrate and size with the [file size calculator](https://shortformkit.com/video-file-size-calculator/), and check what Reels and TikTok cover with the [safe zone checker](https://shortformkit.com/safe-zone-checker/).

Converter engine: [Mediabunny](https://mediabunny.dev) (MPL-2.0) on WebCodecs. MP3 encoding: [LAME](https://lame.sourceforge.io) (LGPL).

## How it works

1. **Drop your file** Or tap to choose it. It is read on your device, nothing is uploaded.
2. **Pick the options** If the tool has any, for example quality or target size.
3. **Save the result** Click Convert, wait for 100 %, then Save file.

## FAQ

**How many videos can I merge?**
As many as your device's memory allows. A handful of phone clips of a few minutes each works fine.

**Can I merge a vertical and a horizontal video?**
Yes. The clip in the other format gets black bars, nothing is cut off.

**Is there a watermark?**
No. The video is made on your device and saved without a logo.

**Is my file uploaded?**
No. The file is processed in your browser and never sent to our server.

**Is there a file size limit?**
We don't set one. Very large files need enough free memory on your device; a computer handles more than a phone.

**Which browsers work?**
Chrome and Edge on computers and Android work best. Safari works in recent versions. If your browser lacks a codec, the tool tells you.

**Is it free?**
Yes. No account, no watermark, no daily limit.


Source: Shortform Kit (https://shortformkit.com/merge-videos/). Free, no login.