Choose Files:

Drop WEBM files here

Settings:

Output Files:

To compress all output files in a ZIP file, click "" icon on the right, then click "Add to ZIP". To download one single file, simply right-click on file link and click "Save link as...".

File Name Original Size Output Size Size Compressed Actions

Steps:

  1. Settings

    Set WEBM video quality first. WEBM video quality value can be 1 (lowest video quality and highest compression) to 100 (best quality but least effective compression). You can also select "Change specified video parameters" option to set video size, bitrate, frame rate or aspect etc. All audio tracks in video file can be removed, this will significantly reduce file size. The settings are optional, you can close "Settings" section by clicking the "X" on the right.

  2. Add Files

    You can drag multiple WEBM files to the "Add Files" section. Each file can be up to 200m.

  3. Compressing

    The batch compression automatically starts when files are uploaded. Please be patient while files are uploading or compressing.

  4. Output Files

    The output files will be listed in the "Conversion Results" section. To compress all output files in a ZIP file, click "" icon on the right, then click "Add to ZIP". You can right-click on file name and click "Save link as..." to save the file. The output files will be automatically deleted on our server in two hours, so please download it to your computer or save it to online storage services such as Google Drive or Dropbox as soon as possible.

About:

WebM is an audiovisual media file format. It is primarily intended to offer a royalty-free alternative to use in the HTML5 video and the HTML5 audio elements. It has a sister project WebP for images. The development of the format is sponsored by Google, and the corresponding software is distributed under a BSD license. The WebM container is based on a profile of Matroska. WebM initially supported VP8 video and Vorbis audio streams. In 2013, it was updated to accommodate VP9 video and Opus audio.

The exclusive "Overall Video Quality" option on our website is inspired by "JPEG Quality" option in image compression. It's more intuitive than setting all kinds of video parameters such as video size, bitrate, frame rate or aspect etc.