Zloth

Alternative comparison

Eightify alternative

If Eightify feels broader than what you need, Zloth is a focused YouTube summarizer Chrome extension built around one click from the YouTube feed.

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Key Takeaways

  • Zloth is a focused Eightify alternative for Chrome users who want fewer steps.
  • The main difference is the starting point: Zloth starts on the YouTube thumbnail, not in a separate link-paste workflow.
  • Free Quick Prompts let you ask a one-off question right on a thumbnail without saving a prompt or opening the video.
  • Eightify can still be the better pick if you want people who want a mature youtube summarizer with mobile apps, multilingual summaries, and comment overview.

First-party comparison proof

How we compared these YouTube summarizers

Last updated: June 15, 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, free one-off Quick 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, free Quick Prompts (one-off custom questions from any thumbnail), Pro saved 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

A free alternative to 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.

  • Zloth: summarize from thumbnails, avoid tab switching, save summaries into folders, sync across devices.
  • Eightify: People who want a mature YouTube summarizer with mobile apps, multilingual summaries, and comment overview.

When Eightify is the better pick

Eightify is a good pick if mobile apps, top comment summaries, or 40+ language coverage matter more than building a saved summary library inside Chrome.

Public pricing note: Chrome Web Store listing mentions a 7-day free trial and in-app purchases; public pages checked did not expose a simple monthly price.

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
Best fit YouTube-first Chrome users who want summaries before opening videos. Power users who want mobile apps and comment overview.
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.
No copy-pasting links Yes. The core workflow happens inside YouTube. Yes for extension use on YouTube videos.
Clickable timestamps Yes in Summary mode. Yes. Timestamped navigation is promoted publicly.
Custom prompts Yes. Save a reusable custom prompt on Pro that powers the default Summarize button. Customization is promoted for focus, format, length, grouping, emojis, and titles.
Quick Prompts (ask from the thumbnail) Yes, free for everyone. Type a one-off question on any YouTube thumbnail with the Ask button - no saved prompt and no opening the video. Customization options are promoted, but not as a one-off prompt typed on a thumbnail on pages checked.
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.
Text-to-speech Yes. Built-in TTS, with Pro AI TTS minutes. Not a primary public YouTube summarizer claim on pages checked.
Free tier Free to start with 120 summary credits per month. Chrome Web Store listing mentions a 7-day free trial.
Entry paid price $5.99/month or $49.80/year for Pro. In-app purchases; simple public monthly price not found on checked pages.
Chrome-only focus Yes. Focused on Chrome and YouTube. No. Chrome, iOS, Android, and web/mobile are promoted.
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.

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.

Zloth folder library with saved YouTube summaries

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.

Eightify feature notes

Summaries, key insights, timestamped navigation, top comment overview, transcript generation, and 40+ language support are promoted publicly.
Chrome Web Store listing says Eightify summarizes videos up to 10 hours and works on Chrome, iOS, and Android.
The public listing describes customization for insight focus, format, length, grouping, emoji usage, and titles.

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 returns timestamps and key takeaways, or answers a free one-off Quick Prompt typed on the thumbnail.
  • 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.

Try Zloth free in Chrome

Use the next YouTube thumbnail as the test. If the summary answers the question, you can skip the video or save it for later.

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Frequently Asked Questions

Is Zloth a free Eightify alternative?

Yes. Zloth is free to start and is a focused Eightify alternative for Chrome users who want to summarize YouTube videos from thumbnails and save results into folders. Eightify is a good pick if mobile apps, top comment summaries, or 40+ language coverage matter more than building a saved summary library inside Chrome.

What does Eightify do well?

Eightify is a good pick if mobile apps, top comment summaries, or 40+ language coverage matter more than building a saved summary library inside Chrome.

Does Zloth summarize YouTube videos without copying links?

Yes. Zloth adds a Summarize button directly to YouTube thumbnails and watch pages, so you can stay in YouTube instead of pasting links into another tab.

Is Zloth free?

Yes. Zloth is free to start with 120 monthly summary credits. Pro is $5.99/month or $49.80/year for heavier use.

Does Zloth save summaries?

Yes. Every summary is saved into your personal library, and you can organize summaries in folders and sync them across devices.

Sources checked

Competitor features and pricing change. These public pages were checked on June 14, 2026 for the first-pass comparison.

Eightify website (June 14, 2026) Eightify Chrome Web Store listing (June 14, 2026) Glasp YouTube summarizer page (June 14, 2026) Glasp pricing (June 14, 2026) NoteGPT YouTube summarizer page (June 14, 2026) NoteGPT pricing (June 14, 2026)