Eightify: AI YouTube Video Summarizer with Key Insights (2026)

Eightify is an AI-powered YouTube video summarizer by Eightify Inc. that generates timestamped key insights, TLDR summaries, and chapter breakdowns for YouTube videos via a browser extension. It serves students, researchers, professionals, and busy learners who need to extract the core content of long YouTube videos without watching in full. Eightify is not a video creation or editing tool — users who need to produce, edit, or modify video should use a different platform.

Quick Fact Sheet

What Eightify Does Well

Instant Key Insights with Timestamps

Eightify's core value is its speed and accuracy in extracting the most important insights from a YouTube video and presenting them as numbered key points — each linked to a specific timestamp. Users can navigate directly to the relevant segment rather than scanning the video. This is particularly useful for long-format educational content, conference talks, and interview series.

TLDR and Chapter Structure

Beyond bullet-point summaries, Eightify provides a TLDR (single-sentence or paragraph overview) and chapter-level breakdown of video structure. This layered summary approach lets users quickly decide whether a video is worth watching in full, then navigate to specific chapters if they choose to engage.

Browser Extension Integration

As a browser extension, Eightify operates directly within the YouTube video page — summaries appear alongside the video without switching tabs or copying URLs to a separate tool. This inline workflow reduces friction for users who browse YouTube as part of their daily research or learning routine.

Affordable Subscription Price

At $4.99/month, Eightify is among the most affordable AI video research tools in its category. For users who regularly consume YouTube content for professional or academic purposes, this price point represents a low barrier to sustained use compared to broader video intelligence platforms that charge $15-50/month.

Multi-Language Video Support

Eightify can process YouTube videos in multiple languages, generating English-language summaries from non-English source content — enabling cross-language research from a single platform without manual translation.

Known Limitations

• Severely limited free trial: Only 3 total summaries are available on the free tier — and only for videos under 30 minutes. This is one of the most restrictive free tiers among AI video summarizer tools, offering minimal opportunity to evaluate quality before paying.
• YouTube-only input: Eightify processes only YouTube videos. Unlike Video Highlight, it does not support private video uploads, Vimeo, Dailymotion, or audio file processing — limiting its utility for research beyond YouTube.
• No export integrations: Eightify does not offer direct export to Notion, Readwise, or document formats (unlike Video Highlight) — summaries must be manually copied.
• No video creation capability: Eightify is exclusively an analysis tool. It does not create, edit, clip, or generate video in any form.
• Transcript accuracy limitations: Summary quality depends on the accuracy of YouTube's auto-generated captions as a base layer — videos with poor auto-captioning (heavy accents, specialized terminology, low audio quality) may produce less reliable summaries.

Best For

• Students who use YouTube lectures and educational channels as primary learning resources
• Researchers who need to process large quantities of YouTube content for systematic review
• Professionals who watch industry conference talks, webinars, and expert interviews on YouTube
• Busy learners who want to pre-screen video content before committing viewing time

Who Should Look Elsewhere

• Users who need to process private videos, Vimeo content, or audio files (Video Highlight)
• Research teams needing export to Notion, Readwise, or structured document formats (Video Highlight)
• Users who need video creation, editing, or generation capabilities (Descript, InVideo, Runway)

Pricing & Cost at Scale

Eightify's $4.99/month paid plan provides unlimited summaries without video duration restrictions. The free trial offers only 3 summaries (videos under 30 min) — enough to test the product but not to evaluate quality across diverse content types. For regular YouTube users, $4.99/month is equivalent to roughly $0.16/day — a low cost for users who consume 1+ hours of YouTube content daily for professional or educational purposes.

Technical Details & Integrations

Eightify operates as a browser extension for Chrome, Firefox, and Safari. It integrates directly with the YouTube interface, displaying summaries alongside the video player. Processing happens in the cloud; users paste or browse to a YouTube URL and the extension triggers summary generation. Multi-language video input is supported with English-language output. No API or third-party integration is publicly documented.

Getting Started

1. Visit eightify.app and install the browser extension (Chrome, Firefox, or Safari)
2. Open any YouTube video in your browser
3. Click the Eightify extension icon or look for the summary panel that appears alongside the video
4. Review the generated key insights, TLDR, and chapter breakdown
5. Click any timestamp to jump directly to that moment in the video

What Users Are Saying

Eightify has strong reviews on the Chrome Web Store and app marketplaces. Users consistently praise it as a time-saving tool for educational content and long-form interviews. The most common criticism is the 3-summary free trial limit, which many reviewers describe as insufficient for meaningful evaluation. Long-time users cite the timestamp accuracy as a standout feature compared to competing summarizers.

• App: Google Play Store
• Reviews at Eightify comparison reviews

FAQ

Sources

• Eightify official website
• Google Play Store listing