SponsorBlock — Skip YouTube Sponsors Automatically

Introduction

SponsorBlock is a community-powered browser extension that lets viewers skip sponsor segments, self-promotions, interaction reminders, and other non-content sections in YouTube videos. Users submit segment timestamps, which are then shared with everyone through a public API, creating a crowdsourced database of skippable moments.

What SponsorBlock Does

• Automatically skips sponsor reads, paid promotions, and product placements
• Skips intros, outros, subscription reminders, and filler content
• Highlights key moments and marks chapters submitted by the community
• Provides a voting system to ensure segment accuracy
• Exposes a public API used by third-party players and apps

Architecture Overview

SponsorBlock consists of a browser extension client and a self-hosted server. The client detects the current YouTube video ID and queries the server for known segments. When the video playback reaches a marked segment, the extension fast-forwards past it. The server stores all submissions in a PostgreSQL database and serves them through a REST API. Community voting and a reputation system keep submissions accurate.

Self-Hosting & Configuration

• Install the extension from Chrome Web Store, Firefox Add-ons, or sideload on Android
• Configure which segment types to skip, mute, or highlight in settings
• Set the skip behavior to automatic, manual prompt, or show in the progress bar only
• The server component can be self-hosted using the open-source SponsorBlockServer repository
• Third-party apps like NewPipe, FreeTube, and mpv integrate via the public API

Key Features

• Crowdsourced database with millions of submitted segments
• Supports multiple segment categories: sponsor, intro, outro, filler, music off-topic
• Voting system and user reputation to maintain data quality
• Public API enables integration in third-party video players
• Privacy-focused with minimal data collection

Comparison with Similar Tools

• uBlock Origin — blocks ads served by YouTube; SponsorBlock skips in-video sponsor reads
• Return YouTube Dislike — restores dislike counts; SponsorBlock focuses on skipping segments
• DeArrow — replaces clickbait titles and thumbnails; SponsorBlock addresses in-video content
• Enhancer for YouTube — adds playback controls; SponsorBlock specializes in segment skipping

FAQ

Q: How accurate are the segment submissions? A: A voting and reputation system helps maintain quality. Popular videos typically have well-verified segments, while newer or obscure videos may have less coverage.

Q: Does SponsorBlock work on mobile? A: It works on Firefox for Android. On iOS, third-party apps like Vinegar integrate SponsorBlock data.

Q: Can I submit segments myself? A: Yes. Press the SponsorBlock button during playback to mark segment start and end times and submit them to the database.

Q: Does this hurt creators? A: SponsorBlock skips the sponsor read but does not block the ad revenue YouTube pays creators for pre-roll and mid-roll ads.

Sources

• https://github.com/ajayyy/SponsorBlock
• https://sponsor.ajay.app