Multi-source summarization
Generate summaries for YouTube videos, web pages, Google search results, Twitter posts, PDFs, and papers, including timestamps and key moments on YouTube.
Glarity
Glarity is a browser extension for summarizing, translating, and chatting with web content such as YouTube videos, web pages, PDFs, search results, and Gmail. It supports major browsers and combines reading, writing, and translation workflows in one tool.
Overview
Glarity is a browser extension that adds ChatGPT-style summarization, translation, and AI chat to common reading and writing tasks. The site presents it as an AI assistant for YouTube videos, web pages, Google search results, PDFs, email, and other supported content.
The product is positioned around faster information extraction and cross-language reading. Across the site, Glarity shows browser support for Chrome, Edge, Safari, Firefox, and Opera, and it combines summarization, side-by-side translation, Gmail quick replies, and content-based Q&A in one extension.
Key features
Immersive translation
Translate full web pages, selected text on web pages, selected PDF text, and images, with a side-by-side view for comparing original and translated content.
AI chat on content
Chat with supported content such as YouTube videos, web pages, and PDFs, and use custom instructions to extract specific information from a page.
Gmail quick reply
Create Gmail reply suggestions, summarize email threads, and analyze sender intent to speed up email responses.
Multiple model support
Support for GPT-4o, Claude 3.5 Sonnet, and Gemini 1.5 Pro is shown across the site, with the pricing page also mentioning model-based AI services.
Extended workflow limits
The pricing page highlights support for larger workflows such as long YouTube videos, longer PDFs, and broader search or translation tasks than the ChatGPT comparison shown there.
Common use cases
Review long videos faster
Use Glarity to turn long YouTube videos into summaries, key moments, or follow-up questions without watching the full video.
Read across languages
Translate web pages or PDF passages while keeping the original text visible, which helps when reading foreign-language articles or documents.
Handle email more efficiently
Open Gmail and generate suggested replies, summarize long threads, or check sender intent before responding.
Scan web content quickly
Summarize search results, news, Twitter posts, or any accessible web page when you need a faster way to scan information.
Work with documents and papers
Interact with PDFs by asking questions, extracting key points, or generating a summary for study, research, or document review.
Pros and Cons
Pros
- Covers several content types in one extension, including videos, web pages, PDFs, search results, and email.
- Supports side-by-side translation and selected-text translation for web pages and PDFs.
- Offers Gmail-specific workflows such as reply generation, thread summaries, and sender-intent analysis.
- Lists support for multiple major browsers on the product pages.
- Shows support for several advanced AI models, including GPT-4o, Claude 3.5 Sonnet, and Gemini 1.5 Pro.
Cons
- The pricing page says the Plus plan is still in testing and may change over time.
- The source text does not provide public pricing numbers in the rendered pricing content provided here.
- The site describes accounts as intended for individual use only, so multi-user access is not supported.
FAQ
What can Glarity summarize or translate?
Glarity can summarize YouTube videos, web pages, PDFs, and Google search results, and it can also provide side-by-side translation, Gmail quick replies, and AI chat on supported content.
Which browsers does Glarity support?
The source pages show browser add-on buttons for Chrome, Edge, Safari, Firefox, and Opera. The product is presented as a browser extension rather than a standalone desktop app.
Is Glarity free or paid?
The product pages describe free functionality and also mention a Plus plan on the pricing page. The pricing page does not expose public prices in the provided text, but it does say the Plus plan is in testing and that plan changes will be communicated in-app and on the pricing page.
How does Glarity's Gmail quick reply work?
The Gmail feature page says you can install Glarity, open Gmail, click the quick reply button on a message, and then copy or insert the suggested reply into the response box.
Do I need an account to use Glarity?
The PDF page says no registration is required for the PDF interaction flow shown there. The pricing page also notes that Glarity/Felo.AI accounts are intended for individual use only.
Quick Facts
- Category
- AI assistant / browser extension
- Primary use
- Summarization, translation, and AI chat for web content
- Platforms
- Chrome, Edge, Safari, Firefox, Opera
- Supported content
- YouTube, web pages, Google search results, Twitter, PDFs, and Gmail
- Source domain
- glarity.app
- Pricing signal
- Free features are shown; a Plus plan is also mentioned
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