15 Free Websites to Convert MP4 to WebM Online

Here is a list of 15 free websites to convert MP4 to WebM online. MP4 and WebM, both are video file formats. MP4 is a popular video format that is compatible with most devices and operating systems. Whereas, WebM is specifically designed for the Web. It is compatible with HTML5 and can support subtitles, captions, chapters, metadata tags, etc. In short, it is good to embed videos in WebM format compared to any other.

These 15 websites can help you easily convert MP4 video files to WebM video format. All websites work in a similar way where you can upload the video, pick the output format and convert the file. The difference is what additional features a website offers. For example, each website has a different allowed file size upload limit. Some websites support batch operation where you can convert multiple files simultaneously. Then there are websites with options to edit and configure various aspects of the output video file. You can check these websites yourself and pick the one that suits your needs.

My Favorite Website to Convert MP4 to WebM Online

WebM.to is my favorite website to convert MP4 to WebM online. Unlike others, this is a dedicated website for WebM files. It can convert various video, audio, and image file formats to WebM and vice versa. It supports batch processing. The main highlight of this website is that it can convert files up to 1 GB in size. That’s not all, you can extend this file size limit up to 100 GB simply by signing up for an account.

You can also check out our lists of the best free Online MP4 Converter Websites, Online Stop Motion Video Maker Websites, and Online Video Aspect Ratio Changer Websites.

WebM.to

WebM.to is a free online WebM converter website. This website can convert various video, audio, and image file formats to WebM and vice versa. Here you can find an online MP4 to WebM converter. One of the main highlights of this website is that it allows up to 2 GB of file size. And, you can extend it to up to 100 GB simply by signing up. Once the file is converted, you can copy its link and share the converted file directly with others. You can also zip the files and email them directly from the website.

How to convert MP4 to WebM with WebM.to?

Go to the WebM.to website and select “MP to WebM” under Video Converter.
Drop the MP4 video on the screen and click “Convert”.
Once the processing is done, download the converted file or copy the file link to share online.

Main Highlights:

Convert up to 2 GB of a video file without an account
Get sharing a link to the converted file
Convert any video, photo, and audio file formats to WebM

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Free Convert

Free Convert is a free converter website that can convert MP4 to WebM online. This website can convert various types of files. While converting the video file, it offers additional options including aspect ratio, screen resolution, codec, and more. You can customize those options if you want to. Otherwise, you can just go ahead and start the conversion. This website can handle videos up to 1 GB in size and process multiple files at once. There is a limited monthly quota, the limitations are good enough for occasional use.

How to convert MP4 to WebM with Free Convert?

Go to the Free Convert website using the link given below.
Click the “Choose Files” button to upload your MP4 files.
Select WebM video format from the “Convert To” drop-down list.
(Optional) Click on the “Advanced Options” button next to the output format.
Click on the “Convert” button to start the conversion.

Additional Features:

This website offers many other converters and features. Some of those features are:

Online Converters: Convert Images, Videos, Audio files, Documents, Ebooks, Archives, and Units online.
Configure video resolution, codec, frame rate, add subtitles, audio codec, and more.
Crop and Trim Video online.
Online Compressors: Compress Video, Image, GIF, MP3, and other file types to reduce the size.

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Cloud Convert

Cloud Convert is a free website to convert MP4 to WebM online. It is basically a cloud-based file conversion service. It supports over 200 file formats that you can convert. In the case of MP4, you can convert other video formats to MP4 and vice versa. All you have to do is upload the file and select the output file format, which is WebM in this case. There is no upload size limit here but you get only 25 conversion minutes per day. It is a decent limit for occasional needs. You can always unlock an additional quota by going with the premium plans.

How to Convert MP4 to WebM with Cloud Convert?

Visit the CloudConvert website and pick ‘Video Converter’ under tools.
Select MP4 as input format and WebM as output format for the conversion.
Upload the video file and start the conversion.

Other Highlights:

Upload from the web, Google Drive, Dropbox, and OneDrive directly
Convert over 200+ file formats online
Change aspect ratio, resolution, framerate, audio bit rate, etc. while converting
No upload file size limit
Convert up to 5 files simultaneously
25 free conversion minutes per day

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123 Apps

123 Apps is a free online file converter and utility website. Its video converter supports over 300 file-formats including h265/HVEC support. This website can convert MP4 to WebM and vice versa. The process is really simple and straightforward. The main highlight of this website is that you can upload a file up to 700 NB in size. Most websites limit the upload size to 100 MB. But with this website, you can easily convert your large video files with ease.

How to Convert MP4 to WebM with 123 Apps?

Visit the Convert-Video-Online website. Click on the ‘Open file’ button to upload the video file.
Select WebM as the output format for the conversion.
(Optional) Adjust the resolution and video codec.
Convert the video.

Other Highlights:

Convert over 300 file formats online
Upload up to 700 MB of file for conversion
Device-specific video conversion
Set video resolution
Configure video and audio codec
Set the output file size for conversion
Cut, crop, and rotate, and loop video
Add text and image to the video
Apply stabilization to full length or specific parts of the video
Remove watermark from the video

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Convertio

Convertio is a free online file converter service. You can use this website to convert MP4 to WebM online. You can upload videos from local storage or import videos directly from Google Drive or Dropbox. The overall conversion process is very simple and only takes a few seconds. This converter allows 2 concurrent conversions to the free users with a limit of 10 conversion minutes per day. And, the maximum supported file size is 100 MB here.

How to Convert MP4 to WebM with Convertio?

Visit the Convertio website and select ‘Video Converter’ from the ‘Convert’ dropdown.
Upload the MP4 video file to the converter.
Select WebM as the output format.
(Optional) Configure the video quality and codec accordingly.
Click the ‘Convert’ button to convert the video file.

Other Highlights:

Convert MP4 videos online
Convert over 1000 file formats online
Convert multiple files together
Upload files up to 100 MB in size
Free 1o conversion minutes per day
Upload from the web, Google Drive, and Dropbox directly
Configure video and audio quality

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Online Converter

Online Converter is a free file converter service that can convert MP4 to WebM online. It supports hundreds of file formats for videos, audio files, images, documents, ebooks, archives, and more. This service is simple to use. You can add the file and then pick a file format for the conversion. In this case, you can upload the MP4 file and then select WebM as output from the video section. Apart from that, you have to make sure that your file is under 200 MB in size.

How to Convert MP4 to WebM with OnlineConverter?

Go to the Online Converter website and select the “Video Converter”.
In the Video Converter, select “MP4 to WebM”.
Then click the “Choose file” button to add your video file.
Click “Convert” to start the conversion.

Additional Features:

Watermark Video: Add a watermark to the video
Compress Video: Reduce video file size
Cut Video: Video cutter to split video files
Resize Video: Video resizer to scale video size
Merge Video: Video joiner to combine multiple video files
Rotate Video: Flip and transpose video
Add Audio to Video: Add or replace background music in videos
Brighten Video: Brighten and lighten a video
Change Video Speed: Speed up or slow down the video
Repair MP4: Fix corrupted MP4, MOV, M4V, 3GP videos

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Video2Edit

Video2Edit offers a set of free online video tools. It has video converters for various video file formats. There is a converter for MP4 to WebM as well. You can simply upload the video file from local storage or fetch it from Google Drive, Dropbox, or web. There is a limit of maximum upload file size. However, the converter allows you to configure various video aspects for the output such as resolution, code, quality, etc. You can simply upload the MP4 file and get it converted to WebM.

How to Convert MP4 to WebM with Video2Edit?

Go to the Video2Edit website and click on the “Convert to WebM” option.
Upload the MP4 video file there.
(Optional) Configure the output video setting and quality.
Start the conversion.

Other Highlights:

Change Framerate, resolution, and video codec
Rotate and cut videos
Convert Video to MP3
Compress videos online
Audio editor

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Aconvert

Aconvert is a free website to convert image, video, audio, document, and many other types of file formats. It can convert MP4 to WebM file format. There is a 200 MB maximum upload size limit for video conversion. You can simply upload the video file and select WebM as the target format. Apart from that, you can also configure the conversion settings including video resolution, frame rate, etc.

How to Convert MP4 to WebM with Aconvert?

Visit the Aconvert website using the link given below. It takes you directly to the MP4 to WebM conversion page. Alternatively, you can go to the ‘Video’ section from the left side of the screen.
This opens a convert screen. Simply upload the video file for conversion.
Make sure the output format is set to WebM.
(Optional) Configure the optional video settings if you want to.
Start the conversion to get the video in WebM file format.

Other Highlights:

Convert MP4 and other video files online
Convert document, image, audio, video, etc.
Upload size is limited to 200 MB for each file
Convert up to 10 files simultaneously
Upload files from the web, Google Drive, or Dropbox directly
Delete your files from the server after download

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Online-Convert

Online-Convert is a free online file converter website to convert MP4 to WebM. This website offers various types of file converters including media, documents, compressed files, image files, and more. The video converter of this website can easily convert MP4 videos to WebM and vice versa. While converting, you can define the configuration for the output file including the final output size you expect. All you have to keep in mind is that your input video is within 100 MB in size.

How to Convert MP4 to WebM with Online-Convert?

Go to the Online-Convert website and expand the “Video Converter” section.
Select “Convert to WebM”’ for the conversion.
Upload the MP4 video file to the converter.
(Optional) Configure the video and audio settings accordingly.
Convert and download the WebM video.

Highlights:

Online convert file formats of media, documents, etc.
Upload and convert multiple files simultaneously
Up to 100 MB file size upload limit
Import from Web, Dropbox, and Google Drive
Change video dimensions
Rotate, cut, crop, and flip video
Change frame rate and bitrate
Set approximate conversion file size
Change audio channel, quality, and codec

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Free File Convert

Free File Convert is another free cloud-based converter service. It can converter the file format of various types of files including videos, images, audio files, documents, units, ebooks, fonts, vectors, and presentations. You can use this website to convert MP4 to WebM online. This website can convert up to 5 files simultaneously as long as the total size is under 300 MB combined. It is simple to use and can also fetch files directly from Google Drive, Dropbox, and from the web via URL.

How to convert MP4 to WebM with Free File Convert?

Go to the Free File Convert website and select “Video Converter”.
On the next screen, upload your MP4 file there and pick WebM as output.
Click the “Convert” button to start the video conversion.

Additional Features:

Online Converters: Convert videos, photos, audio files, documents, ebooks, archives, fonts, vectors, etc.
Compress, split, encrypt, and decrypt PDF files online.
Perform OCR online.

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Any Conv

Any Conv is an all-in-one cloud-based file converter. It can convert image, document, audio, video, ebook, archive, font, CAD, and mesh. You can pick a converter for the file type that you want and then upload the data and get it converted. In the case of MP4 to WebM, you have to pick the WebM converter. Then you can add an MP4 file and convert it online. The maximum file size upload limit is 100 MB and you can convert multiple files under that limit. All the files automatically get deleted after one hour of conversion.

How to convert MP4 to WebM with Any Conv?

Go to the Any Conv website and pick “WebM Converter” from the Video section.
On the next screen, upload the MP4 video(s) and then click the “Convert” button.

Main Highlights:

Convert any type of file format from one to another
Convert up t0 100 MB of file at a time
Convert multiple files simultaneously
Automatically deletes files after 1 hour of upload/conversion

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Pixiko

Pixiko is an online video editor that offers many online tools for video and audio. It has a versatile video converter that you can use to convert MP4 to WebM online. There is no mention of a maximum file size limit. When you upload the file, it opens it in a new tab where you can pick the output format for conversion. From there, you can also open the video to an online video editor. This website has a waiting queue for free users. This queue can be up to thousands of tasks before yours. But you can avoid the queue by creating a free account.

How to convert MP4 to WebM with Pixiko?

Go to Pixiko MP4 to WebM converter by following the link given below.
Add the MP4 file that you want to convert.
On the next screen, click the “Convert” button.
Wait for it to get converted, and then download the final WebM file.

Additional Features:

Pixiko is a video-focussed website so all its features are around that. On this website, you can Add Text to Video, Add Music to Video, Loop Video, Merge, Video, Trim Video, Rotate Video, Reverse Video, etc.

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File Converter

File Converter is a free cloud-based audio and video converter. It supports various file formats for audio and video including MP4, WebM, and many others. There is a common converter where you can choose different options for your conversion type. You can set it to video converter, add your MP4 file and convert to WebM. While doing so, it also gives you an option to change the resolution of the final video.

How to convert MP4 to WebM with File Converter?

Go to the File Converter website and select “Video Converter”.
Upload the MP4 file to the converter and select WebM as the output format.
(Optional) Set the resolution for the final video.
Click the “Convert” button to start the conversion.

Main Highlights:

Fetch files from Web, Google Drive, and Dropbox directly
Converts one file at a time
Automatically deletes files from the server after 1 hour
No mention of the maximum file upload size limit

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M Converter

M Converter is a free cloud-based conversion service that can convert media, e-book, office, archive formats. It can convert files up to 200 MB in size with ease. There is batch processing as well, which means, you can convert multiple files at once. This website is really simple to use. You can just select the input format, add your file and then pick the output format. While doing so, you can cross-convert different compatible file formats as well. For example, you can convert any video file format to an audio file format.

How to convert MP4 to WebM with File Converter?

Go to the M Converter website and pick MP4 format from the Video Converter section.
Add the MP4 video there for upload.
After upload, select WebM as output format from the given options.
Click the “Convert” to start conversion and get the output.

Main Highlights:

Convert files up to 200 MB in size.
Batch conversion: Convert multiple files at the same time.
No account needed: You can use the converter right away
Multiple Converters: Convert video, audio, image, Office, Archive, and Ebook file formats.

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F Convert

F Convert is yet another free online file conversion website. This website can also convert MP4 to WebM online. The converter has a very basic and simple-to-navigate user interface. You can pick the converter of your choice and then add your file. It can only process one file at a time and you can also mention a URL to fetch the file from the Web. Apart from the file format, it offers a set of additional video settings. You can configure the bitrate, size, audio bitrate, and frame rate for the final video. You can also mention timestamps to precisely cut the video while conversion.

How to convert MP4 to WebM with F Convert?

Go to the F Convert website and select WebM from the video converter.
On the next screen, upload your MP4 video to the converter.
(Optional) Customize the video settings as per your liking or leave those as it is.
Click “fConvert” button to start the conversion.
Once done, you can download the final video just below that.

Highlights:

F Convert offers various types of online converters for image, video, audio, document, vector, ebook, archive, GPS, and many other file types. There is no mention of the maximum file size upload limit but the tool works well. It also gives you an option to reverse the video and audio in the output.

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Web Applications