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Wondershare UniConverter

  • Merge multiple MP4 files into one with one-click and no quality loss.
  • Edit MP4 videos with trimming, cutting, croppping, adding subtitles, etc.
  • Convert MP4 to 1000+ video formats like MOV, MKV, FLV, AVI, MPEG, etc.
  • All-in-one tool: video compressor, screen recorder, DVD burner, and more.
merge mp4 online

Merge MP4 Online: Top 8 MP4 Joiners Online Free 2024

by Christine Smith • 2024-02-20 11:37:34 • Proven solutions

To combine multiple video clips into a single file, video merging tools are required. With compatibility with all types of devices and programs, MP4 is one of the most popularly used formats and for joining your MP4 files, many software and online tools are available. We have picked up the reputed MP4 joiner online tools for your convenience. Read the following parts to learn the details about how to merge MP4 online.

Part 1. Best tool to merge multiple MP4 files together without limitations.

You can merge MP4 online using a simple tool, but they come with several limitations like internet dependency, size limit, and others. So if you are in search of a program that allows merging MP4 files in a hassle-free manner and without any limitations, we suggest Wondershare UniConverter as the best choice.

This professional desktop software supports almost all popular video formats including MP4 for processing. The files can be merged in a few simple steps without losing quality. Option for change in output format, resolution, and other formats is also supported. Additional software features include video conversion, editing, transfer, download, and others. Windows and Mac version of the software is available for download.

video converter icon Wondershare UniConverter - Best MP4 Merger for Windows/Mac

video merger
  • Merge multiple MP4 videos into one with super fast speed and no quality loss.
  • Edit MP4 videos with trimming, cropping, rotating, adding subtitles, and more others.
  • Support 1000+ video/audio formats including MP4. MOV. WMV, FLV, AVI, MKV, etc.
  • Optimized presets for almost all devices, like iPhone, iPad, Huawei phone, etc.
  • 90X faster conversion speed than common converters with unique APEXTRANS technology.
  • Burn videos to DVD or Blu-ray disc with free DVD menu templates.
  • Transfer videos from computer to iPhone, iPad, and other devices directly and vice versa.
  • Versatile toolbox: Add video metadata, GIF maker, cast video to TV, video compressor, and screen recorder.
  • Supported OS: Windows 10/8/7/XP/Vista, macOS 11 Big Sur, 10.15 (Catalina), 10.14, 10.13, 10.12, 10.11, 10.10, 10.9, 10.8, 10.7, 10.6.
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Steps to merge MP4 videos using Wondershare UniConverter.

Step 1 Load MP4 videos to Wondershare UniConverter.

Run Wondershare UniConverter on your system and select the Converter section from the main interface. Click on the add files icon in Wondershare UniConverter button to browse and add the local MP4 videos. You can also drag and drop the files.

add mp4 files to merge

Step 2 Choose the target format for MP4 files.

After the files are added, select the target format by expanding the drop-down menu at the Output Format: option in the top-right corner. From the Video tab, select MP4 or other desired format as the target file in which all the videos will be merged. Also, choose the video resolution.

choose MP4 as output

Step 3 Merge MP4 files and start processing.

At the bottom of the software, interface move and enable the slider at Merge All Video. Select the destination folder on the PC to save the processed file at the Output tab. Finally, hit on the Start All button to start merging the added files.

merge MP4 files

Part 2. Top 8 easy ways to merge MP4 online and free.

To combine MP4 online without installing any third-party software, listed below are the best tools.

1. Clideo

You can join MP4 online using this simple program that works from the browser interface. The files to be merged can be added from the local system, Google Drive, Dropbox, and through URL in case of online videos. In addition to MP4, other popular video formats like AVI, MPG, MOV, and others are supported. To merge your videos seamlessly, you can adjust the size and the borders. Option for selecting the output file resolution, quality, and format is also available.

Merge MP4 Online - Clideo


  • Allows to adjust the size and the borders
  • No limitation to the number of videos that can be added
  • Option to select the output file resolution and other parameters


  • Internet dependency
  • File processing speed is slow

2. Online Converter

To merge MP4 videos online simply and quickly, this program works as a great option. The interface is user-friendly and allows adding multiple files within the size limit of 200MB. All popular formats like MP4, AVI, MOV, M4V, and others are supported as the input format by the program. The files are connected in the order they are added to the interface.

Merge MP4 Online - Online Converter


  • Simple interface
  • No software download or installation needed
  • Popular formats are supported as input files


  • File size limit is 200MB
  • MP4 is the only supported output format
  • No option for selecting output file parameters

3. AConvert

This free to use browser-based software allows merging multiple MP4 and other format files into a single video. The added files can be up to 1GB in size and they all must have the same format, size, resolution, and other parameters. Files can be added from the local system, Google Drive, Dropbox, and URL. The files are merged in the order in which they are added to the program. Processed video can be downloaded from the interface.

Merge MP4 Online - AConvert


  • Simple and user-friendly interface
  • Files from multiple-sources can be added
  • This MP4 joiner online free support all major formats as input files


  • Video file size can be 1GB
  • All the added files must have the same file parameters
  • No option to select the order in which files can be added.

4. Pixiko

This online tool supports multiple video editing functions including video merging. MP4 and other format videos can be added to the interface for the merging process. The order in which you want to merge the videos can be selected using the tool.

Merge MP4 Online - Pixiko


  • Allows changing the order of the merged file as needed
  • Option to edit the uploaded video before merging


  • Internet dependence
  • The processed file needs to be downloaded

5. APowersoft

The program works from the browser and supports all major formats like MP4, AVI, MOV, WebM, and others. A maximum of 5 files can be added at a time for merging and you can rearrange their merging order as required. The processed file is downloaded to your system and for the safety of your files; they are deleted from the program interface within 24 hours.

Merge MP4 Online - APowersoft


  • All major formats like MP4, MOV, AVI, WebM, and others supported
  • The merged file is downloaded to your PC
  • This MP4 video joiner online has an option to re-arrange the order of the files


  • Only 5 files at a time can be added
  • No option for selecting the output file parameters
  • Slow file uploading and processing speed

6. Kapwing Montage Maker

You can merge MP4 online free using this Kapwing tool that allows adding local as well as online videos. There is also an option to add photos or GIF files to be merged with the videos. Videos can be arranged in the desired order and the option for trimming and cutting the unwanted part is also there. File editing option by putting an outro, adding a watermark, inserting a title slide, and others are also supported.

Merge MP4 Online - Kapwing Montage Maker


  • Option to add photos and GIF along with videos for merging
  • Option to select aspect ratio, background color, and edit files
  • Files can be arranged in the order to be merged


  • Supported formats include gif, .jpg, .png, .mp4, .mov, .webm, .ogg, and .mpeg
  • Dependency on internet availability

7. Movie Maker Online

This is a decent tool to merge video online mp4 for free without any need for software download, installation, or registration. The files to be merged can be simply dragged and dropped to the interface. By default, the files are merged in the order in which they are added but there is also an option to manually select the order. Option to trim and cut the video files is also there. Using this online video merger mp4 you can process files with transitions or without transitions.

Merge MP4 Online - Movie Maker Online


  • Allows to select the order of file merging
  • Option to merge videos with transitions or without transitions as needed


  • The interface is not user-friendly
  • Dependency on internet connectivity

8. FlexClip

Using this free online tool your multiple MP4 videos can be merged into a single file in no time. All popular video file formats from your system can be added to the interface which is then added in storyboard mode. The order of the file can be manually arranged as needed and you can even preview the video before merging. The merged files can be downloaded in MP4 format and the option to select output resolutions is also there.

Merge MP4 Online - FlexClip


  • Support arranging the files for merging as needed
  • Output file resolution can be selected from 480p, 720p, and 1080p
  • User-friendly interface


  • The output file can be downloaded only in MP4 format
  • Signing-up with the program is required to merge files

Wondershare software allows merging without any limitations and in a quick and hassle-free manner while the online tools are simple to use but comes with size and feature limitations. So access your merging requirements and merge videos online mp4 or using the professional Wondershare UniConverter.

Christine Smith

Christine Smith

chief Editor

Resource > Merge Videos > Merge MP4 Online: Top 8 MP4 Joiners Online Free 2024