LogoAI Jet
Icon for Glarity

Glarity

Free ChatGPT-powered browser extension for YouTube video summarization, webpage translation, PDF analysis, and AI writing assistance across multiple browsers.

Introduction

Glarity: Your AI-Powered Cross-Language Reading & Writing Assistant

Glarity is a free, open-source browser extension that leverages ChatGPT and other advanced AI models to provide comprehensive content summarization and translation capabilities. Trusted by over 1,000,000 users, Glarity transforms how you interact with online content across multiple platforms and languages.

What is Glarity?

Glarity is a versatile AI copilot that integrates seamlessly into your browsing experience. It works across major browsers including Chrome, Edge, Safari, Firefox, and Opera, offering powerful tools to summarize, translate, and interact with web content.

Core Capabilities
Video Summarization

Glarity excels at summarizing YouTube videos, generating summaries in over a dozen languages, creating timestamped highlights, FAQs, and even translating video subtitles. Users can engage in AI chat to extract and discuss video content.

Webpage Translation & Summarization

The extension provides real-time full-page translation, text selection translation, PDF text selection translation, and image translation capabilities. It can summarize any webpage and enable AI-powered conversations about the content.

AI-Powered Reading & Writing

With its AI Reader feature, Glarity offers PDF analysis and chat capabilities. The AI Writing Assistant helps generate and improve articles, emails, and social media responses up to 20 times faster with human-like quality.

Technology Stack

Glarity is powered by multiple AI models including ChatGPT, OpenAI API, Claude 3.5, GPT-4o, and Gemini Pro, ensuring versatile and high-quality AI assistance for various content tasks.

Target Audience

Students, researchers, content creators, professionals who consume multilingual content, and anyone seeking to improve their online reading and writing productivity

Key Features
  • YouTube video summarization with timestamped highlights
  • Real-time full-page webpage translation
  • PDF summarization and AI-powered analysis
  • Text selection translation for webpages and PDFs
  • AI writing assistant for articles, emails, and social media
  • Google search result summarization
  • Twitter and Gmail content summarization
  • AI Chat with 10+ models and 200k context window
  • Cross-language summary generation in 12+ languages
  • Image translation capabilities
Use Cases
  • Summarizing YouTube videos for quick content consumption
  • Translating foreign language webpages in real-time
  • Analyzing and summarizing PDF documents
  • Assisting with email writing and social media responses
  • Extracting key information from Google search results
  • Creating multilingual content summaries
  • Engaging in AI conversations about web content
  • Generating video subtitles and translations
Pros
  • Completely free and ad-free
  • Supports multiple browsers (Chrome, Edge, Safari, Firefox, Opera)
  • Powered by multiple advanced AI models
  • Open-source project
  • Trusted by over 1 million users
  • Comprehensive feature set covering summarization, translation, and writing
  • Supports 12+ languages for summaries
Cons
  • Requires browser extension installation
  • Some advanced features may require API keys
  • Dependent on third-party AI model availability
Pricing

Free to use with optional premium features

Latest News

Update history | Glarity

Update history | Glarity

8/5/2026

Supports Yahoo! JAPAN News summaries. Supports PubMed free article summaries. Customize Prompt updated UI and interaction, added Clickbait scoring.

Glarity Extension Update history | Glarity Blog

Glarity Extension Update history | Glarity Blog

8/5/2026

Hide Page Summary icon Update interaction, add description. Version 1.6.0 (2023.3.27) Support YouTube Comment Summary. Version 1.5.0 (2023.3.26) Support Amazon product reviews summary. Version 1.4.2 (2023.03.24) Page Summary supports custom prompts. The Glarity box limits the maximum height and auto...

What are the recent updates in the Windsurf changelog? - Ask and ...

What are the recent updates in the Windsurf changelog? - Ask and ...

8/5/2026

- The latest updates focus on improving chat experiences, providing better models, improved context, and more control over code items that Windsurf analyzes [4]. For a complete list of all updates and changes, you can visit the official changelog page here [1]. ... How can I legally rent out an apar...

Glarity - Free ChatGPT YouTube Summary/Translate Webpage Extension ...

Glarity - Free ChatGPT YouTube Summary/Translate Webpage Extension ...

8/5/2026

Glarity is a free ChatGPT extension that uses ChatGPT4o AI to summarize YouTube videos and translate web pages. It also supports GPT-4o, Claude 3.5, and Gemini for AI chat, video summaries, AI search, ChatPDF, and AI image generation. }

Introduction to Glarity | Glarity

Introduction to Glarity | Glarity

8/5/2026

ニュース, PubMed, PMC, NewsPicks, Github, Nikkei, Bing, Google Patents, Twitter, Gmail, PDF, and provides summaries for any webpage. Glarity also supports a side-by-side translation feature and serves as a Writing Assistant. 3.Is Glarity - Summary for Google/YouTube (ChatGPT) free to use? Yes, using the...

FAQ

More Products

TinyPNG is Tinify’s browser-based image compressor and converter. This review explains how its web tool differs from its Developer API, what each free allowance covers, and when its compression, conversion, resizing, and cropping features may fit an image workflow.

Zamzar is an online file conversion and compression service for documents, images, video, sound, and other formats. Its free web service has daily file and upload-size limits.

iLoveIMG is a browser-based image service for compression, resizing, cropping, conversion, and editing, with a free Basic plan and paid options.

Smallpdf is an online PDF toolkit for conversion, compression, editing, merging, signing, and more. Its Free plan includes 30+ tools but limits downloads.

Convertio is a browser-based service for converting files between supported formats, with optional settings for many conversion types.

FreeConvert is an online file converter with more than 1,500 listed conversion types and a free allowance of 20 conversion minutes per day.

HiPDF is an online PDF service with conversion, editing, compression, merging, cropping, image tools, and AI features.

123apps is a browser-based suite of video, audio, PDF, and file-conversion tools. Its apps are free to use with limits on file size and daily operations.

ChatPDF summarizes PDFs and answers questions about them. Its free plan allows two document analyses per day, with no account needed to get started.

CloudConvert is a browser-based converter for more than 200 file formats, including documents, images, audio, video, archives, and specialist formats.

OCR.space provides free browser-based OCR for images and PDFs, searchable PDF creation, and a separate API for adding text recognition to software.

Free online itinerary maker with 900+ trip plans across 96 countries. Edit day-by-day in the browser; export to PDF, Excel, CSV, Google Sheets or .ics. Free account required to download/print. Optional Pro adds premium themes; AI chat helps draft plans.

AI manga translator that re-letters your language into the art

TasteDir is a curated directory of finished, well-crafted software from indie makers and small teams. Every listed tool is reviewed by hand.

An AI meeting copilot that combines live transcripts, screenshots, and project documents to deliver contextual answers, response drafts, and meeting recaps.

Create professional invoices free in your browser: live preview, any currency, tax and discounts, custom templates, and no-watermark PDF. No signup needed.