The easiest way to compress WebM files is to use dedicated compression tools, such as MiniTool Video Converter or XConvert, as described in this article. The general process involves controlling the compression level or video parameters, selecting the output format, and then performing the compression.

Why Compress WebM File

WebM is a video format widely supported by web browsers, like Safari, Chrome, Edge, etc. Although WebM files are highly compressed, a large WebM video will still increase the loading time of a website and lead to a less enjoyable viewing experience for visitors with slower broadband speeds. That’s why we should compress WebM files.

How to compress WebM file on Windows easily and quickly? Keep reading this article.

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How to Compress WebM File Offline

  • Import a WebM video file
  • Control the compression level or video parameters
  • Choose an output format
  • Start compression

In this section, I’d like to recommend two reliable WebM compressors:

  • MiniTool Video Converter
  • XConvert

Comparison Table

ToolMiniTool Video ConverterXConvert
Batch ComparisonYesYes
Maximum File SizeNo limit1GB
WatermarkNoNo
Compression Level10%-100%1%-100%

Option 1: MiniTool Video Converter

MiniTool Video Converter is a free, clean, and professional video compressor that can compress videos efficiently. It supports various input formats, such as WebM, MP4, MOV, MKV, 3GP, AVI, and so on. Plus, you can choose the output estimated file size based on your needs.

To speed up the compression process, you can compress up to 5 files at the same time. The compressed videos have no watermarks. Now, just follow the step-by-step guides below to reduce WebM file size.

vc-1-logo MiniTool Video Converter

  • Batch convert video/audio files among 1000+ formats.

  • Quickly compress videos for easy storage and transfer.

  • Accurately extract subtitles from video/audio files.

  • Effectively enhance video quality.

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1: Click the download above below to download and install MiniTool Video Converter on your PC. Then, launch it.

2: In the main interface, click the gear icon to access the Settings window. Next, go to the Compress tab to set the maximum number of simultaneous compression tasks. Then, click OK to save the changes you just made.

MiniTool Video Converter Settings interface showing how to set the maximum compression task.

3: Navigate to the Compress Video section and click the Add Files button to import the target WebM video.

Tips:
Click the Add Folder button to import more than one video.

4: Click the Settings icon on the target video to open the Compression Settings window. There, you can drag the red dot icon to select the output estimated file size or use the recommended compression ratio by default. Also, you can expand the Format option to select the output format you want. Then, click OK.

MiniTool Video Converter interface showing how to set the video compression parameters.

Tips:
To batch compress videos, expand the Compress all files to option and select the compression ratio you want for all videos.

5: Expand the Output option at the bottom and choose a destination folder. After that, click the Compress button to start compression.

6: Once completed, this tool will go to the Completed section automatically. You can click the Play icon to view the video or click the Folder icon to locate it.

MiniTool Video Converter interface showing how to view and locate the compressed video under the Completed tab.

With MiniTool Video Converter, you can reduce MB of WebM with no effort!

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Option 2: XConvert

Don’t want to install any extra software on your computer? Then try an online video compressor! XConvert is definitely worth a try. One of the biggest features of XConvert is the fast WebM compression speed. This online video compressor also enables you to compress WebM file by adjusting the bitrate, file size percentage, quality, etc.

You can also set a preset compressed file size and convert multiple files at once. With XConvert, you can easily compress WebM files on Windows. However, this tool has a maximum file size limit of 1 GB.

1: Launch the browser on your computer, search for XConvert, and enter its user interface.

2: Type Compress WebM into the search box, then click the Go option next to the target tool to enter the WebM compression interface.

XConvert interface showing how to enter the WebM compressor interface.

3: Click the Add video files button to import the WebM file to XConvert.

4: Then, you can change the video codec, file size percentage, variable bitrate, and more settings.

XConvert WebM compression interface with the File Compression area selected.

5: After that, click Compress to start compression. Once done, click the Download button to save the file to your local file.

XConvert helps you compress WebM file with no hassle!

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Looking for a fast video compressor to cut file size? Try MiniTool Video Converter, HandBrake, FreeConvert, and RedPanda.

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Conclusion

This post provides 2 professional video compressors to help compress WebM files offline & online. MiniTool Video Converter offers flexible compression settings for desktop users, while XConvert provides a convenient browser-based solution.

You can send an email to support@minitool.com if you have any questions about using MiniTool Video Converter.

People Also Ask

Is WebM bigger than MP4?
No. Generally speaking, WebM files are smaller than MP4 files. Because they utilize advanced codecs like AV1 or VP9, ​​they can minimize file size while maintaining video quality.

Can I change a WebM to MP4?
Yes, you can. The most direct way to upscale the video is by using a video conversion tool, such as MiniTool Video Converter. Alternatively, you can convert it to MP4 format during the video compression or editing process by selecting MP4 as the output format.

What are the disadvantages of WebM?
The primary drawback of WebM lies in its compatibility. Compared to MP4, WebM has poorer compatibility and is less suitable for use on some older devices or applications.

Is a WebM file safe?
Yes. WebM is inherently a secure video format. However, if you encounter a security issue with such a file, it is typically because the file is being used to deliver malicious content by exploiting vulnerabilities in the media player or platform.

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About The Author

Jade
Jade

Position: Columnist

Jade is an experienced multimedia tech writer who has authored hundreds of guides on screen recording, video editing, and software troubleshooting. Dedicated to bridging the gap between complex technical concepts and user-friendly solutions, she specializes in providing clear, actionable advice.

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