YourCodecs lets Firefox users choose H.264, VP9, or AV1 codecs for YouTube video streams.
Extra Themes
Choose among YouTube layouts from different years with StarTube, a userscript designed for the V3 client.

About Extra Themes
StarTube is an open-source userscript that lets you choose your YouTube layout. It is designed to work with Vorapis 2013 (V3), a separate YouTube client that restores the 2013-2014 YouTube layout. StarTube is described as the successor to CustomTube and supports almost every layout from 2008 to 2024.
To use it, you first install V3, then install the StarTube script with a userscript manager such as Tampermonkey on Firefox, Edge, or Chrome. The project offers regular, Beta, and Legacy versions, with Legacy intended only for older browsers when the regular version does not work. Settings are accessed through the userscript manager icon in the browser toolbar, and you refresh the page to apply layout changes.
StarTube suits people who already use or plan to use V3 and want to switch between older YouTube layouts. It requires some setup, so it fits users who are comfortable installing a client and a userscript.
Key features
- Choose YouTube layouts from 2008-2024
- Designed for use with Vorapis 2013 client
- Access settings from Tampermonkey toolbar icon
- Offers regular, Beta, and Legacy versions
- Open source under MIT license
- Supports layouts from 2008-2024
- Open source under MIT license
- Includes Legacy version for older browsers
- Requires V3 to function
- Greasemonkey is known to cause issues
- Legacy version is missing features
Extra Themes at a glance
- Category
- Social & Communities › YouTube Tools
- Type
- Open-source project
- Pricing
- Not confirmed. Check the site
- Open source
- Yes · Source code
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
Extra Themes alternatives
Tools and sites you could use instead, ranked by how closely they match.
Watch YouTube through a browser-based client that routes requests through Tor, except for the video file host.
FreeTube is an open-source YouTube app described as being designed for privacy.
Unsubscribe from multiple YouTube channels with a browser script that works from the subscriptions page.
yt-fts searches YouTube channel subtitles from the command line to support full-text transcript searches.
ytclipper marks up YouTube or local videos in a browser and generates video clips.
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Extra Themes FAQ
What is StarTube?
Does StarTube work without V3?
How do I change my layout in StarTube?
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