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Video Tools2 formats supported

Free online video merger

Use this free online video merger to combine video clips in your browser. Merge MP4, MOV, WebM, AVI, and MKV files without uploading them to a remote server.

  • Join multiple video clips in sequence
  • Reorder files with drag-and-drop
  • Concat without re-encoding for same-format files

Supported formats

MP4WebM

Arrange files and merge

Add your files, set their order, and combine them into one output.

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Drag & drop Video Mergers

or click to browse

Supported: MP4, WebM, MOV, AVI

How It Works

A simple three-step flow from upload to download.

  1. 1

    Upload multiple video files and arrange them in your desired order.

  2. 2

    The merger will concatenate them sequentially.

  3. 3

    Download the single merged video file.

Features

Key capabilities surfaced as quick-scan cards.

  • Join multiple video clips in sequence

  • Reorder files with drag-and-drop

  • Concat without re-encoding for same-format files

  • Automatic format normalization when needed

Related Tools

Nearby workflows people often use before or after this video tool.

Video Trimmer

MP4 · WebM · MOV

Cut and trim video segments with precise start and end time controls.

Open tool

Video Converter

MP4 · WebM · AVI

Convert videos between MP4, WebM, AVI, MOV, MKV, and more with quality control.

Open tool

Video Compressor

MP4 · WebM

Reduce video file size without significant quality loss using CRF optimization.

Open tool

Video Effects

MP4 · WebM · MOV

Apply filters, speed changes, reverse, rotation, and more to your videos.

Open tool

How to merge videos online

  1. 1

    Upload your video clips

    Choose two or more video files from your device or drag them into the merger. Common formats like MP4, MOV, WebM, AVI, and MKV are supported.

  2. 2

    Arrange the clip order

    Drag the clips into the sequence you want. This lets you combine short recordings, split exports, or multiple scenes into one final video.

  3. 3

    Merge and download

    Start the merge and download the combined video when it is ready. The process runs in your browser, so you can merge videos online without sending the files to a remote server.

Understanding the settings

If the clips already share the same format, resolution, and similar encoding settings, merging can often happen much faster because the tool can avoid heavy re-encoding. If the clips are very different, the merge may need to normalize them first so the final video plays properly. In general, keeping your clips in the same format before merging produces the most predictable result and the fastest processing experience.

Compatibility, privacy, and limitations

Browser and device support

These tools are designed for modern browsers. Actual speed and maximum practical file size depend on device memory, processor speed, and how much media your browser can safely keep in memory during processing.

Format safety

If you are unsure which output to choose, start with broadly compatible formats such as MP4, WebM. They are usually the safest fallback for everyday sharing and playback.

Privacy explanation

This media job runs locally in your browser, which is useful for personal recordings, internal assets, and other files you would rather not send through a remote upload service for a routine edit.

Things to keep in mind

  • Very large files can take longer to inspect and process because browsers have less memory headroom than native desktop editors.
  • FFmpeg-based browser processing is flexible, but long or high-resolution media can still be slower than a native desktop workflow.
  • Batch and multi-file jobs depend on total file size as well as per-file size, so large runs may need to be split into smaller batches.

Frequently asked questions