SponsorBlock depends on community-submitted segment data.
A video may lack coverage, and submitted timings or categories can be contested or corrected by votes.
Evidence source ↗
SponsorBlock
SponsorBlock is an open-source extension that uses community-submitted timestamps to skip sponsored segments and other selected sections in YouTube videos.
Editorial overview
Aggregated Overview
The documented feature set includes crowdsourced segment skipping, configurable categories, user submissions, and a public API. No verified third-party rating or review sample was found, and these scores are editorial assessments rather than user ratings.
This profile combines documented product information and independent evidence where available. It is not a hands-on test unless TechZella explicitly identifies one.
SponsorBlock Decision Snapshot
A quick way to understand who this product may suit, where its limits matter, and which facts are most relevant before you compare alternatives.
Best suited to
People who watch YouTube in supported browsers and want community-marked sponsor segments, intros, outros, or other selected sections skipped.
Look elsewhere if
People seeking a general ad blocker, a privacy suite, guaranteed coverage for every video, or official native support across all video apps.
Platforms
Android, Chrome extension, Firefox, Microsoft Edge, Safari
TechZella assessment
7.2/10
Overview
SponsorBlock is an open-source project for skipping community-marked sections in YouTube videos. Its browser extension checks for submitted timestamps and can skip configured categories, including sponsor segments, intros, outros, and subscription reminders.
Users can submit and vote on segments. Since coverage depends on community contributions, a video may have no matching data or may contain submissions that need correction. The project also publishes a public API and downloadable database for compatible tools.
SponsorBlock — What Sets It Apart?
These are the product-specific differences that may matter when deciding whether the software fits your workflow. They are based on documented evidence rather than a universal ranking.
- The project combines viewer-submitted timestamps with automatic skipping, voting, and correction of existing segments.
- A public API and downloadable database let developers build compatible clients, subject to the published license.
- The developer describes a k-anonymity approach for segment lookups rather than sending the watched video directly to the server.
6 key claims verifiedOur editorial team checked this profile against vendor documentation, product documentation, supporting sources. Supported by 4 documented sources.
SponsorBlock Pros & Cons
Pros
- The core extension is available free and its code is open source.
- Community submissions can provide segment data across supported clients.
- Users can configure categories and contribute corrections.
- The project publishes a public API and downloadable database.
Cons
- Coverage depends on community submissions and may be absent or inaccurate for some videos.
- The official extension is primarily for YouTube rather than a general-purpose video ad blocker.
- The API and database have non-commercial license conditions unless separate permission is granted.
- Some mobile and media-player options are third-party ports rather than official extensions.
SponsorBlock Gotchas & Operational Limits
These are documented constraints or practical friction points that may matter before you adopt the product.
SponsorBlock's public API and database have a stated license, and automated submissions are prohibited.
Developers should review attribution and non-commercial requirements before building commercial services or automated submission tools.
Evidence source ↗SponsorBlock Pricing & Plans
Core extension
$0
Free
The browser extension is available free of charge. Voluntary donations are available. Safari App Store distribution is paid, but the price was not verified.
Check current pricing →Pricing may change. Verify current plans on the vendor's website.
SponsorBlock Features
Segment skipping
- Automatically skips available community-marked video segments
- Supports sponsorship, intro, outro, and other segment categories
- Allows users to configure which categories are skipped
Community contributions
- Submit timestamps for video segments
- Vote on existing segment submissions
- Create personal segments stored locally without submitting them
Developer access
- Public API for segment and related data
- Downloadable segment database
- API and database use subject to published license terms
Alternatives
No directly comparable alternative was verified in this research. SponsorBlock’s third-party ports and compatible clients are ways to use its segment data in other environments, rather than independent alternatives to the project.
Demo & Screenshots
SponsorBlock Specifications
| License | GNU GPL version 3 or later |
|---|---|
| Primary service | YouTube; README also lists Invidious support |
| API | Public API available; automated submissions are not allowed |
| API and database license | CC BY-NC-SA 4.0 unless separate permission is granted |
| Free trial | Not applicable; the core extension is free |
| Safari distribution | Paid App Store option; self-build option documented as free |
Deployment & System Footprint
Verified installation, hosting, administration, or environment details that can affect implementation.
| Installation or hosting | Users install a browser extension; the project also documents third-party ports and publishes server code. Source ↗ |
|---|
Our evidence-based assessment
TechZella Score
A proprietary editorial score based on product capabilities, usability, value, performance, support and user sentiment evidence.
7.2/10Low confidence
The documented feature set includes crowdsourced segment skipping, configurable categories, user submissions, and a public API. No verified third-party rating or review sample was found, and these scores are editorial assessments rather than user ratings.
Methodology v1.0. The assessment weighs feature coverage (25%), ease of use (15%), value for money (20%), performance (15%), support (10%) and user sentiment (15%), using researched product evidence and verified review evidence where available. It is a TechZella editorial assessment, not a direct user-review average.
Editorial transparency
Our Review Methodology
Key claims are linked to the sources used to verify them. This evidence record is separate from third-party user ratings.
TechZella evaluates software using documented product capabilities, pricing information, usability and value considerations, independent user evidence where available, and competitive context. The assessment is an editorial review, not a hands-on test unless one is explicitly identified. Our editorial assessment is based on 4 documented sources.
What TechZella adds
- The project combines viewer-submitted timestamps with automatic skipping, voting, and correction of existing segments.
- A public API and downloadable database let developers build compatible clients, subject to the published license.
- The developer describes a k-anonymity approach for segment lookups rather than sending the watched video directly to the server.
Important limitations
- Coverage depends on available community submissions, so some videos may have no segments or incorrect timestamps.
- The official browser extension is centered on YouTube; support in other apps is through third-party ports or clients.
- The public API and database have a non-commercial license unless the maintainer grants separate permission.
Evidence-backed claimsSponsorBlock is an open-source, crowdsourced extension for skipping YouTube video segments. The extension supports categories beyond sponsorships, including intros, outros, and subscription reminders. SponsorBlock publishes a public API and downloadable database. The API and database have a stated license, and automated submissions are not allowed. The project documents Firefox use on Android with mobile YouTube. The developer describes a k-anonymity method for segment lookups.
The project README describes community-submitted segment data and automatic skipping of known segments.
View source ↗Verified 2026-10-05The project README names these additional segment types.
View source ↗Verified 2026-10-05The API documentation identifies the public API and database download and lists supported endpoints.
View source ↗Verified 2026-10-05The API documentation states the submission restriction and links to the applicable license.
View source ↗Verified 2026-10-05The Android guide describes using SponsorBlock with Firefox on m.youtube.com.
View source ↗Verified 2026-10-05A developer post on Mozilla's forum says the extension uses k-anonymity so the server does not know which video is being fetched.
View source ↗Verified 2026-10-05Community feedback
Reviews
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FAQ
Is SponsorBlock free?
The core extension is available free of charge. Donations are voluntary. The Safari App Store version is described as paid, but its current price was not verified.
What does SponsorBlock skip?
It can skip community-marked sponsorships and other configured categories, such as intros, outros, and subscription reminders.
Does it work on Android?
The project documents using SponsorBlock with Firefox on Android while viewing m.youtube.com. Various separate third-party apps also support its data.
Does SponsorBlock have an API?
Yes. The public API provides segment and related data endpoints. API and database reuse is subject to published license terms, and automated submissions are prohibited.
Does SponsorBlock use AI to mark segments?
The project FAQ says visible SponsorBlock segments are human-made, as far as the maintainers know. It describes NeuralBlock as a separate moderation aid with a limited role.
Is SponsorBlock a general ad blocker or privacy suite?
No. Its documented primary function is skipping user-submitted sections within videos. It should not be treated as a general ad blocker or a full privacy product.
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