Both YouTube Spoiler and Eightify are AI-powered Chrome extensions that summarize YouTube videos. But they solve different problems and are built around different workflows. This comparison will help you decide which one actually fits how you use YouTube.
The Core Difference
Eightify activates on the watch page — you open a video, and the extension surfaces a summary panel below the player. The summaries are well-structured, timestamped, and useful for navigating long-form content you have already decided to watch.
YouTube Spoiler operates a step earlier: on the thumbnail. You hover over any video on your YouTube homepage, search results, or feed, click the Spoil button, and get AI bullet points without ever opening the video. It answers "is this video worth my time?" before you commit to clicking.
That distinction shapes everything else about how these tools feel day-to-day.
Feature Comparison
| Feature | YouTube Spoiler | Eightify |
|---|---|---|
| Works from thumbnail (no video open) | Yes | No |
| Works on YouTube homepage / feed | Yes | No |
| AI bullet-point summaries | Yes | Yes |
| Timestamped chapters | No | Yes |
| Real-time streaming output | Yes | No |
| Language support | 35 languages | ~15+ languages |
| Account required | No | Yes |
| Free tier | 3/day free | Limited free |
| Pro / unlimited price | $3.99/mo | from ~$8/mo |
Pricing
YouTube Spoiler's free tier gives you 3 summaries per day at no cost, no account needed. Pro is $3.99/mo for unlimited summaries.
Eightify offers a limited free tier (a small number of summaries per day) and a premium subscription. Public pricing has varied, but expect to pay roughly $8–$10/mo for unlimited access. Check Eightify's website for current rates as their pricing has changed over time.
When to Use YouTube Spoiler
- You want to scan and triage your YouTube feed quickly
- You are deciding whether a video is worth watching before clicking
- You do not want to create an account or log in to anything
- You want summaries in one of 35 languages
- You want the cheapest unlimited option ($3.99/mo)
When to Use Eightify
- You are already on a video's watch page and want to navigate it faster
- You need timestamped chapter breakdowns to jump to specific moments
- You watch long-form lectures or podcasts and want structured chapter outlines
- The "decide before opening" workflow is not a priority for you
The Honest Take
Eightify is a polished tool for getting more out of videos you are already watching. If you routinely sit through 1-hour podcasts and need to find the section you care about, timestamped chapters are genuinely useful.
But the more common problem is not navigating a video you have opened — it is avoiding the ones you should never have opened. That is where YouTube Spoiler wins clearly. The hover-on-thumbnail workflow is faster, requires no account, costs less, and covers more languages.
If you only install one: YouTube Spoiler for feed triage. Eightify if you primarily want in-video chapter navigation and do not mind the higher price.
Frequently Asked Questions
What is the main difference between YouTube Spoiler and Eightify?
The core difference is when summarization happens. YouTube Spoiler works directly from thumbnails — you hover over a video on any YouTube page and get a summary without opening the video. Eightify requires you to navigate to the video's watch page first. If you are triaging a feed of 20 videos, YouTube Spoiler is dramatically faster.
Is Eightify free?
Eightify offers a limited free tier with a small number of summaries per day. Unlimited access requires a paid subscription (from around $8–$10/mo, though pricing changes). YouTube Spoiler offers 3 free summaries per day at no cost, with Pro unlimited at $3.99/mo.
Does Eightify work without opening the video?
No. Eightify only activates on the video watch page. You must navigate to the video before you can generate a summary. YouTube Spoiler is the only extension that summarizes from the thumbnail, letting you check any video before deciding to open it.
Which is better for quickly scanning a YouTube feed?
YouTube Spoiler, by a wide margin. Its thumbnail-hover workflow means you can spoil a dozen videos in under a minute without leaving the homepage. Eightify requires opening each video individually, which defeats the purpose of quick feed triage.
Related: YouTube Spoiler vs Glasp • YouTube Spoiler vs NoteGPT • Best YouTube Summarizer Extensions