Locus records 615 monthly visits with -85.1% month-over-month growth and Freemium, Free Trial pricing. MARK•R records 43 monthly visits with -95.1% growth and Freemium pricing.
Ctrl+F, reimagined with AI for web pages and PDFs
Highlight any web text and query it with conversational AI, right on the page
| Dimension / Metric | | |
|---|---|---|
| Official Domain | locusextension.com | mark-r.com |
| Pricing Model | Freemium, Free Trial | Freemium |
| Monthly Visits | 615 (615) | 43 (43) |
| MoM Traffic Delta | -3.51K (-85.1%) | -825 (-95.1%) |
| Primary Market & Share | 🇺🇸 United States (100%) | 🌐 Global (—) |
| Direct Visits / mo | 239 | 16 |
| User Rating | 4.1 | 4.2 |
| Supported Platforms | Website | Website |
Ctrl+F, reimagined with AI for web pages and PDFs
Use everyday language to find the exact section you need on any web page or PDF, catching matches that exact keyword search cannot.
Summarize entire pages or selected portions to save time and get the key takeaway quickly.
Locus AI helpers brainstorm research topics, suggest further reading, and generate note cards to help you retain information.
Choose from current models including OpenAI GPT-4o-family options, Anthropic Claude, and Google Gemini, with new releases added within days.
Highlight any web text and query it with conversational AI, right on the page
Selecting any passage on a page activates a dynamic icon and AI prompt field, so a question can be asked at the exact place you are reading rather than in a separate chat window.
Responses draw on the surrounding article or page, not just the highlighted fragment, which supports deeper questions about argument, terminology and implications.
Ask for an executive summary, a white-paper outline, slide talking points, suggested email replies or rewritten copy without leaving the browser.
Explain difficult terms, unpack technical or legal jargon and request simpler phrasing, which helps with dense academic, medical and financial material.
Real-time AI answer engine and research workspace combining live web citations with frontier reasoning models.
Real-time AI answer engine and research workspace combining live web citations with frontier reasoning models.
All-in-one AI assistant across web, browser, desktop and mobile
All-in-one AI assistant across web, browser, desktop and mobile
AI research platform for reading, understanding and writing scientific papers
AI research platform for reading, understanding and writing scientific papers
AI sidebar and browser agent for reading, writing and research
AI sidebar and browser agent for reading, writing and research
One AI assistant that plugs ChatGPT, Claude and Gemini into every tab
One AI assistant that plugs ChatGPT, Claude and Gemini into every tab
One-click AI assistant for browsing, writing and research
One-click AI assistant for browsing, writing and research
Chat with any PDF, video, or website and get cited answers in seconds
Highlight the web, learn in public, and build your AI clone
Highlight the web, learn in public, and build your AI clone
One browser agent that combines every major AI model with web automation
Free / Open-sourceSummarize YouTube, Google, and any page with AI — free in your browser
Free / Open-sourceSummarize YouTube, Google, and any page with AI — free in your browser
Summarize, bookmark and write with AI right in your browser
Summarize, bookmark and write with AI right in your browser
Turn long articles, videos and PDFs into structured summaries you can actually search.
Turn long articles, videos and PDFs into structured summaries you can actually search.
