YouTube via iFrame (ad-free)

Nostrum

This YouTube AdBlock iFrame module allows you to replace YouTube videos with iframes. Ads are blocked on iframes due to cross-origin resource sharing (CORS) restrictions.

Screenshots from Mozilla Add-ons

Discovery

SponsorBlock - Skip Sponsorships on YouTube

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Users: 820k
Rating: 4,8
Reviews: 3,244

Enhancer for YouTube™

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Users: 602k
Rating: 4,7
Reviews: 12,436

Tab Session Manager

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Users: 172k
Rating: 4,2
Reviews: 1,247

Unhook: Remove YouTube Recommended Videos Comments

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Users: 171k
Rating: 4,6
Reviews: 1,200

Tree Style Tab

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Users: 141k
Rating: 4,5
Reviews: 2,276

Immersive Translate -Translate Website, PDF, Video

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Users: 113k
Rating: 3,7
Reviews: 494