Zloth vs Eightify
Zloth is the cleaner Eightify alternative when your main job is deciding from the YouTube feed, saving the result, and organizing summaries without opening every video first.
YouTube summarizer comparison
Best free YouTube summarizer 2026?
Compare Zloth vs Eightify, Glasp, and NoteGPT for the real workflow: summarize faster, avoid copy-pasting links, keep useful summaries, and decide what is worth watching.
Key Takeaways
- Zloth is the best free YouTube summarizer for people who want to summarize from the YouTube thumbnail before opening a video.
- Eightify, Glasp, and NoteGPT are stronger when you want broader ecosystems: mobile apps, highlighting/export workflows, or batch study tools.
- Zloth is free to start with 120 monthly summary credits, then Pro is $5.99/month or $49.80/year.
- The main Zloth difference is workflow: no copy-pasting links, no tab switching, and every summary is saved into a library with folders.
- If you live inside YouTube and Chrome, Zloth is intentionally narrower, faster, and easier to keep using.
First-party comparison proof
How we compared these YouTube summarizers
Last updated: June 14, 2026
- We compared Zloth, Eightify, Glasp, and NoteGPT using public product pages, pricing pages, and Chrome Web Store listings where available.
- We focused on YouTube-summary workflow, free tier, pricing, clickable timestamps, custom prompts, saved-summary organization, and whether users can avoid copy-pasting links.
- Competitor claims are limited to facts visible on public pages checked on June 14, 2026. Pricing and feature limits can change.
- Zloth claims are first-party product claims based on the current Chrome extension: thumbnail summaries, Summary and Analysis modes, Pro custom prompts, saved folders, sync, and text-to-speech.
| Source | Checked | Used for |
|---|---|---|
| Eightify website | June 14, 2026 | Feature claims, positioning, platform coverage |
| Eightify Chrome Web Store listing | June 14, 2026 | Free trial, Chrome extension claims, feature list |
| Glasp YouTube summarizer page | June 14, 2026 | YouTube summary features, model/prompt claims |
| Glasp pricing | June 14, 2026 | Free and paid plan limits |
| NoteGPT YouTube summarizer page | June 14, 2026 | YouTube summary features, batch/playlist claims |
| NoteGPT pricing | June 14, 2026 | Paid plan pricing and quota claims |
Zloth vs Glasp
Zloth is the simpler Glasp alternative when you want YouTube-first summaries from thumbnails, a private saved library, folders, and Chrome-only focus.
Zloth vs NoteGPT
Zloth is the lighter NoteGPT alternative when the important workflow is one-click YouTube browsing, saved summaries, folders, and no link-copying loop.
YouTube summarizer comparison table
A practical feature comparison focused on workflow, free tier, organization, and pricing.
Competitor facts checked against public pages in June 2026.
| Criteria | Zloth | Eightify | Glasp | NoteGPT |
|---|---|---|---|---|
| Best fit | YouTube-first Chrome users who want summaries before opening videos. | Power users who want mobile apps and comment overview. | Learners who also highlight, export, and build a public knowledge trail. | Students who want batch processing and an all-in-one AI study suite. |
| Summarize from thumbnail | Yes. Zloth adds a Summarize button directly to YouTube thumbnails and watch pages. | Primarily promoted as a YouTube-tab extension button after opening a video. | Promoted as a Chrome extension and URL-based summarizer with on-page summaries. | Primarily promoted as paste/add-link online summarization and batch processing. |
| No copy-pasting links | Yes. The core workflow happens inside YouTube. | Yes for extension use on YouTube videos. | Yes with the extension; URL paste is also promoted. | No for the main web workflow; users paste or add video links. |
| Clickable timestamps | Yes in Summary mode. | Yes. Timestamped navigation is promoted publicly. | Yes. Timestamped transcripts and summaries are promoted publicly. | Yes. Timestamped video notes are part of its learning workflow. |
| Custom prompts | Yes on Pro. | Customization is promoted for focus, format, length, grouping, emojis, and titles. | Yes. Custom prompt support is promoted publicly. | Yes. Custom prompt and summary length are promoted publicly. |
| Saved and organized library | Yes. Summaries save to a personal library with folders and sync. | Sharing and articles are promoted; a Zloth-style folder library is not the public focus. | Yes, as part of a broader highlights, notes, and exports workflow. | Yes, through NoteGPT notes, but the YouTube page emphasizes generated online summaries. |
| Text-to-speech | Yes. Built-in TTS, with Pro AI TTS minutes. | Not a primary public YouTube summarizer claim on pages checked. | Not a primary public YouTube summarizer claim on pages checked. | Voice tools exist in the broader product suite. |
| Free tier | Free to start with 120 summary credits per month. | Chrome Web Store listing mentions a 7-day free trial. | Free plan lists 3 basic YouTube summaries per day. | Free online summarizer is promoted; paid plans add quotas and processing power. |
| Entry paid price | $5.99/month or $49.80/year for Pro. | In-app purchases; simple public monthly price not found on checked pages. | $12.50/month when billed annually for Pro. | $9/month for Pro. |
| Chrome-only focus | Yes. Focused on Chrome and YouTube. | No. Chrome, iOS, Android, and web/mobile are promoted. | No. Chrome, Safari, Edge, Firefox, iOS, and Android are promoted. | No. Broad web app and AI learning suite. |
| When Zloth is the better pick | When you want the fastest in-flow decision: summarize from the feed, save it, organize it, and move on. | Choose Zloth over Eightify if thumbnail-first workflow and a saved folder library matter most. | Choose Zloth over Glasp if you do not want a broader social highlighting system. | Choose Zloth over NoteGPT if you want less copy/paste and fewer all-in-one app surfaces. |
Screenshots and media
See the Zloth workflow
These are first-party product captures: thumbnail summaries, timestamp output, and the saved summary library.
Summarize from the YouTube thumbnail
Zloth places the action before the click, so you can decide whether a video is worth opening.
Clickable timestamp summaries
Summary mode turns long videos into timestamped notes you can jump through.
Saved summary library
Useful summaries become a reusable library with folders and sync.
Actual review
Actual review: where Zloth wins
Zloth is best when the YouTube feed is the starting point. Its strongest advantage is not a longer feature list; it is reducing the steps between seeing a video and knowing whether it is worth your time.
Best for
- Students screening lectures and tutorials before committing to a full watch.
- Researchers and professionals who want timestamped notes without losing their browsing flow.
- People who want summaries saved into folders instead of temporary AI chat output.
Not the best fit for
- Users who need mobile apps more than a Chrome-first workflow.
- Users who want a broad highlighting, PDF, or all-in-one AI study suite.
- Teams that need batch processing of many links at once.
The best free YouTube summarizer depends on your workflow
Zloth is intentionally narrow: it is a Chrome extension for people who already browse YouTube and want the summary before they commit to watching. That is why the thumbnail button, saved folders, and in-browser library matter more than a long menu of unrelated AI tools.
When each tool is the better pick
- Zloth: fastest Chrome workflow, thumbnail summaries, saved folder library, free to start.
- Eightify: mobile apps, comment overview, and broad multilingual support.
- Glasp: highlights, exports, social learning, and a broader personal knowledge system.
- NoteGPT: batch summarization, playlists, and a larger AI study workspace.
Un-copyable proof
Example first-party Zloth summary
A real Zloth-style summary of our own 20-second product demo transcript.
Zloth product demo
- 00:00 - The problem: opening every YouTube video wastes time before you know whether it is worth watching.
- 00:04 - Zloth adds the summary action directly to the YouTube thumbnail.
- 00:08 - The extension can return timestamps, key takeaways, and custom-prompt answers.
- 00:12 - Summaries are saved into folders and synced across devices.
- 00:16 - The CTA is simple: add Zloth to Chrome and learn more while watching less.
Add to Chrome - free
Try Zloth on the next YouTube video you are tempted to open. If the summary is enough, you just got your time back.
Frequently Asked Questions
Is Zloth free?
Yes. Zloth is free to start with 120 summary credits per month. Pro is available for heavier use.
What is the best free YouTube summarizer 2026?
If you want a Chrome extension that summarizes directly from YouTube thumbnails and saves summaries into folders, Zloth is built for that workflow. If you need batch processing, mobile apps, or a broader note-taking suite, compare Zloth with Eightify, Glasp, and NoteGPT first.
Zloth vs Eightify: which is better?
Zloth is better for thumbnail-first YouTube browsing and a saved folder library. Eightify is worth considering if mobile apps, top comment overview, and broad multilingual support are more important.
Zloth vs Glasp: which is better?
Zloth is better if you want a focused YouTube summarizer inside Chrome. Glasp is better if you want highlighting, exports, social learning, and summaries across web pages and PDFs too.
Zloth vs NoteGPT: which is better?
Zloth is better if you want fewer steps while browsing YouTube. NoteGPT is better if you want a broad AI learning suite with batch summarization and many non-YouTube tools.
Does Zloth require copying and pasting YouTube links?
No. Zloth works directly on YouTube thumbnails and watch pages, so you can summarize without switching tabs or pasting links into another tool.
Sources checked
Competitor features and pricing change. These public pages were checked on June 14, 2026 for the first-pass comparison.