Last updated 08-30-2026
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Glarity
Glarity is a free browser extension from Felo Inc. that summarizes and translates pages as you browse. Install it on Chrome, Edge, Safari, Firefox, or Opera to get summaries for YouTube videos, Google results, Twitter posts, Gmail threads, PDFs, and any open webpage. It runs on models including GPT-4o, Claude 3.5, and Gemini Pro, and the core extension is ad-free.
Most standalone chat tools make you copy URLs into a separate window. Glarity embeds summaries, side-by-side translation, and page Q&A directly in the sites you already use, including an open-source extension repo on GitHub. Compared with default ChatGPT limits, Glarity membership advertises unlimited-duration YouTube summaries and PDF handling for roughly 300 pages versus four-page caps on the free ChatGPT side.
It suits readers working across languages, researchers who want quick digests of pages and videos, and anyone who prefers AI helpers inside Google, YouTube, and Gmail rather than switching tabs. Paid Glarity Standard, Pro, and Plus plans add higher monthly token limits and advanced query allowances when the free tier is not enough.
Summarize YouTube videos with highlights, FAQs, subtitles, and timestamped key moments in over a dozen languages
Generate summaries for Google search results, Twitter posts, news pages, and any webpage with custom extraction prompts
Translate full webpages side by side with up to 10 parallel translation streams per second
Chat with PDF and webpage content; Glarity advertises PDF summaries for documents of roughly 300 pages
Draft Gmail replies with quick responses, summaries, and sender intent analysis from the extension
Use Felo AI Chat with 10+ models, a 200k context window, and image generation
Covers summarization and translation across YouTube, search, email, PDFs, and general webpages in one extension.
Available on Chrome, Edge, Safari, Firefox, and Opera, with an open-source GitHub repo and an online YouTube summarizer.
Free extension is ad-free, with paid Standard, Pro, and Plus plans for higher token and advanced query limits.
Paid plans cap monthly GPT reading tokens and advanced queries; limits vary by Standard, Pro, and Plus tier.
Glarity accounts are for individual use only; the site warns that robot or multi-user access can lead to suspension.
The Plus plan is still in a testing phase and may change as upstream providers like OpenAI and Anthropic adjust policies.
How does Glarity summarize YouTube videos?
Glarity generates video summaries in more than a dozen languages, creates timestamped highlights, builds video FAQs, generates and translates subtitles, and lets you chat with the video to pull out specific details.
Can Glarity summarize any webpage?
Yes. The Glarity extension can summarize any webpage you open, and you can chat with that page content or use custom prompts to extract specific information.
What translation features does Glarity offer?
Glarity provides real-time full-page translation, side-by-side webpage translation, selected text translation, PDF text translation, and image translation through its free translation extension.
Do I need a ChatGPT or OpenAI account to use Glarity?
Glarity works with your own ChatGPT or OpenAI API key, but the paid Glarity Plan offers more stable service and longer text and video summaries for users who do not want to bring their own key.
Which browsers support Glarity?
Glarity offers extensions for Chrome, Edge, Safari, Firefox, and Opera, plus an online YouTube summarizer that works without installing the extension.
What models does the Glarity Plan support?
Glarity Pro supports multiple models, including GPT-4o, Claude 3.5, Gemini 1.5 Pro, and LLAMA 3. The pricing page also lists Claude 3.5 Sonnet and Gemini 1.5 Pro for membership tiers.