# Zloth

> Zloth is a free Chrome extension that summarizes YouTube videos directly from their thumbnails. It adds a Summarize button to YouTube thumbnails and watch pages, returns timestamped summaries and key takeaways, and saves every result into a personal library with folders and cross-device sync.

Last updated: 2026-07-30

Key facts:
- Platform: Chrome extension, focused on YouTube.
- Free to start with 120 credits per month (1 credit = 1 minute of video, so about two hours of video). Pro is $7.99/month or $59.88/year and includes 1,500 credits per month.
- Core workflow: summarize from the thumbnail before opening a video, so you can decide what is worth watching without copy-pasting links or switching tabs.
- Quick Prompts (the "Ask" button): type a one-off custom question directly on any YouTube thumbnail and get an answer for that specific video. Free for everyone, no saved prompt and no opening the video required.
- Other features: Summary and Analysis modes, clickable timestamps, saved folders, sync, built-in text-to-speech (Pro AI TTS minutes), and a Pro saved custom prompt that powers the default Summarize button.
- Maker: Alexander Specht. Not affiliated with YouTube or Google.

## Main pages
- [Zloth home](https://www.zlothai.com/): Product overview, features, demo, pricing, and FAQ.
- [About Zloth](https://www.zlothai.com/about/): The maker and the product philosophy.
- [Contact](https://www.zlothai.com/contact/): How to reach the Zloth team.
- [Feedback](https://www.zlothai.com/feedback/): Submit feature requests and feedback.

## Free tools
- [Free YouTube transcript generator](https://www.zlothai.com/youtube-transcript-generator/): Paste a YouTube URL and get the full video transcript with timestamps. Free, no signup; works with auto-generated captions and Shorts.

## Guides
- [Guides hub](https://www.zlothai.com/guides/): All YouTube summary and transcript guides.
- [How to summarize a YouTube video with ChatGPT](https://www.zlothai.com/guides/summarize-youtube-video-with-chatgpt/): ChatGPT cannot watch videos; the transcript-paste workflow that works, purpose-specific prompts, handling long videos, and the one-click alternative.
- [How to get a transcript of a YouTube video](https://www.zlothai.com/guides/get-transcript-of-youtube-video/): Three ways — free one-paste tool, YouTube's built-in transcript panel, and what to do when a video has no captions.

## Comparisons
- [Best free YouTube summarizer 2026](https://www.zlothai.com/best-youtube-summarizer/): Hub comparing Zloth against Eightify, Glasp, and NoteGPT on workflow, free tiers, timestamps, custom prompts, Quick Prompts, saved libraries, and pricing.
- [Eightify alternative — Zloth vs Eightify](https://www.zlothai.com/eightify-alternative/): Full comparison of Zloth and Eightify, and when each is the better pick.
- [Glasp alternative — Zloth vs Glasp](https://www.zlothai.com/glasp-alternative/): Full comparison of Zloth and Glasp, and when each is the better pick.
- [NoteGPT alternative — Zloth vs NoteGPT](https://www.zlothai.com/notegpt-alternative/): Full comparison of Zloth and NoteGPT, and when each is the better pick.

## Install
- [Chrome Web Store listing](https://chromewebstore.google.com/detail/youtube-video-summarizer/jfhjaflfbgpikpppkmmgbejjnehjfhim): Install Zloth for Chrome.

## Legal
- [Privacy Policy](https://www.zlothai.com/privacy/)
- [Terms of Service](https://www.zlothai.com/terms/)
- [Refund Policy](https://www.zlothai.com/refund-policy/)
- [Impressum](https://www.zlothai.com/impressum/)