Glarity - Free AI-powered page summarization and real-time translation extension

What is Glarity

Ever found yourself staring at a 40-minute YouTube tutorial thinking "I just need the key points"? Or perhaps you've discovered a brilliant research paper in Japanese or German, only to spend hours struggling through it with translation tools that feel clunky and slow? Maybe you're drowning in a sea of Twitter threads, newsletters, and long-form articles that you simply don't have time to read thoroughly.

You're not alone. Information overload is a real challenge in our content-saturated world, and the tools we've been using often feel like they're part of the problem rather than the solution.

Glarity is a free, ad-free browser extension and web application that changes how you consume online content. Built on ChatGPT/OpenAI and other leading AI models, Glarity automatically summarizes YouTube videos, web pages, PDFs, and more—then lets you translate everything in real time.

Think of it as having an intelligent research assistant who reads everything for you and presents the essentials in seconds.

What makes Glarity stand out is its capability to handle content that other tools simply can't manage. While ChatGPT supports approximately 4K tokens (about 30 minutes of video), Glarity processes YouTube videos with no time limit and handles PDFs up to approximately 300 pages—versus the 4-page limit you'd encounter with standard ChatGPT. The translation engine delivers content at 10 times the speed of conventional tools, and you can choose from multiple leading AI models including GPT-4o, Claude 3.5 Sonnet, and Google Gemini Pro.

Trusted by over 1,000,000 users worldwide, Glarity has earned consistent five-star ratings on the Chrome Web Store. The platform is developed by Felo Inc., a Japanese company also behind Felo AI (AI-powered search) and Felo 瞬訳 (real-time translation)—products that have established strong reputations in the Asian market.

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Core Features That Transform Your Workflow

Glarity isn't just another summarization tool—it's a comprehensive AI-powered content intelligence platform designed for real-world workflows. Here's how each feature serves your specific needs.

YouTube Video Summaries That Actually Work

You can use this feature to extract the core message from any YouTube video—whether it's a 15-minute product review or a 2-hour lecture. Unlike other tools that max out at around 30 minutes of content, Glarity has no time limit, making it ideal for comprehensive tutorials, podcasts, and documentary-style content.

The AI identifies key moments and creates timestamped highlights, so you can jump directly to the sections that matter most. You also get auto-generated FAQs, subtitle translation, and the ability to ask follow-up questions about the video content.

Intelligent Search Results

When you search on Google, you can use Glarity to get AI-generated summaries of search results—showing you the key insights across multiple sources rather than requiring you to click through dozens of links. This semantic understanding approach aggregates information intelligently, saving you significant research time.

Any Web Page, Instant Summary

You can use this to summarize any webpage—news articles, blog posts, or documentation—with a single click. But it goes further: you can engage in an AI conversation about the page content or create custom prompts to extract specific information that matters to your work.

PDF Analysis That Reads Between the Lines

This feature is particularly valuable for researchers, students, and business professionals. You can upload PDFs up to approximately 300 pages and interact with the content through questions and answers. Compare this to ChatGPT's 4-page limitation, and you'll understand why users call this a game-changer for academic research and due diligence.

Real-time Translation Without the Friction

You can use Glarity to translate entire webpages instantly, with support for text selection translation, full-page translation, PDF translation, and even image translation. The parallel processing architecture delivers results at 10 times the speed of traditional translation tools, making multilingual research genuinely practical.

AI-Powered Writing and Communication

When you're drafting emails, articles, or social media responses, Glarity's AI Writing Assistant helps you generate and refine content quickly. For Gmail users, the Smart Reply feature understands context and suggests appropriate responses—significantly cutting down email time while maintaining a professional tone.

Unified AI Chat Interface

You can access over 10 advanced AI models through a single interface, with a massive 200K token context window and unlimited image generation capabilities. Whether you need expert answers, creative content, or code assistance, switching between models happens seamlessly.

Twitter/X Thread Summaries

You can quickly make sense of lengthy Twitter threads by extracting the key points automatically. This is particularly valuable when following complex discussions or tracking trending topics across the platform.

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Who Is Getting Value from Glarity

Glarity serves a diverse range of users, from students to enterprise teams. Here's how different people are using it to solve real problems.

If You're a Student or Researcher

When you're preparing for exams or conducting literature reviews, you often need to process dozens of papers, lecture videos, and online resources in a single session. With Glarity, you can summarize lengthy academic videos to extract key concepts, get instant summaries of research papers in any language, and ask specific questions about PDF documents to clarify complex passages. What previously took hours now takes minutes.

If You're a Content Creator or Marketer

When you're constantly brainstorming new content, responding to comments, and keeping up with industry trends, time is your scarcest resource. Glarity helps you quickly scan YouTube videos for content inspiration without watching entire videos, generate first drafts for articles and emails, get AI-assisted replies for comments and messages, and stay informed by summarizing Twitter threads and industry newsletters efficiently.

If You're a Business Professional

When you deal with international clients, research competitors, or process large volumes of documentation, language barriers and information overload directly impact your productivity. Glarity enables you to translate foreign business documents instantly, summarize long email threads and reports, get quick summaries of YouTube tutorials on new tools or techniques, and extract key insights from news articles about your industry.

If You're in Product or Engineering

When you need to evaluate new technologies, review documentation, or learn from tutorials, you need efficient ways to process technical content. Glarity helps you quickly assess whether a YouTube tutorial is worth watching, summarize technical documentation and API references, translate foreign-language developer resources, and stay updated on tech news without clicking through dozens of articles.

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Pricing Plans for Every Need

Glarity offers a tiered subscription model designed to accommodate everyone from casual users to power users. Whether you're just trying it out or integrating it into your daily workflow, there's a plan that fits.

Understanding the Plans

Glarity Standard at $7.49/month (or $89/year—saving you 25%) gives you 2,000K tokens per month for reading and summarizing content, plus 150 advanced queries monthly. This plan includes access to all Felo AI Chat features, smart search, search summaries, YouTube summaries, PDF summaries, AI chapters, and the "Ask Glarity Anything" feature. This is ideal for individual users, students, and professionals who need solid daily functionality without heavy usage.

Glarity Pro at $12.49/month (or $149/year—saving you 17%) steps up to 5,000K tokens monthly with 600 advanced queries. You also get priority customer support and access to all Pro-exclusive features. This works well for power users, researchers, and content creators who rely on these tools throughout their workday.

Glarity Plus at $15/month (or $179/year—saving you 70%) provides unlimited tokens and unlimited advanced queries, plus priority support. This is the best choice for teams, agencies, or anyone who uses these features extensively and doesn't want to worry about usage limits.

All Plans Include Access to Leading AI Models

Every tier supports GPT-4o, Claude 3.5 Sonnet, and Gemini 1.5 Pro—giving you flexibility to choose the model that best fits your specific task or preference.

Which Plan Should You Choose?

Start with Standard if you're new to Glarity and want to explore the core features. Upgrade to Pro when you find yourself hitting limits regularly. Choose Plus if you're integrating Glarity into professional workflows or sharing it across a small team.

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Frequently Asked Questions