Media Source ExtensionsMedia Source Extensions Market Share & Usage Stats
Media Source Extensions (MSE) is a W3C specification that allows JavaScript to send byte streams to media codecs within web browsers that support HTML5 video. Among other possible uses, this allows the implementation of client-side prefetching and buffering code for streaming media entirely in JavaScript.
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Get Key InsightsSite Totals
630
Market share
<0.01%
Category
Audio Video Media
Sub-category
Audio Video Media
Paid or free
Free
As of April 13, 2026, a total of 630 websites have been identified using this technology. The highest concentration of usage is in India, showcasing its widespread adoption in the region. Among all sites leveraging this platform, assessmentday.co.uk stands out as the most visited, demonstrating the significant role this technology plays in the digital landscape.
Media Source Extensions usage by country
Media Source Extensions's is primarily used in India, followed by United States and Germany.
Top Countries
Media Source Extensions alternatives & related technologies
The top alternative to Media Source Extensions is YouTube, followed by Vimeo. Click below to analyze and compare these technologies' market share and audience.
YouTube
Vimeo
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