Casper AI records 0 monthly visits with — month-over-month growth and Freemium pricing. ChatPDF records 1,044,477 monthly visits with -3.7% growth and Freemium pricing.
Summarize any page or PDF without reading it all
Chat with any PDF, video, or website and get cited answers in seconds
| Dimension / Metric | | |
|---|---|---|
| Official Domain | chrome.google.com | chatpdf.com |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 0 (0) | 1.04M (1,044,477) |
| MoM Traffic Delta | 0 (—) | -40.47K (-3.7%) |
| Primary Market & Share | 🌐 Global (—) | 🇺🇸 United States (9.6%) |
| Direct Visits / mo | 0 | 457.79K |
| User Rating | 4.2 | 4.2 |
| Supported Platforms | Browser Extension | Website |
Summarize any page or PDF without reading it all
Condense long articles and pages into short summaries directly from the browser, without copying text into another app.
Work through reports and papers in PDF form and pull out the central points rather than reading cover to cover.
Surfaces the most important new information in a document so you can focus attention where it matters.
Turn what you have read into concise notes you can forward to colleagues and stakeholders.
Chat with any PDF, video, or website and get cited answers in seconds
Every response is anchored to your source document with clickable citations that scroll to the exact passage, so verification takes seconds instead of page-by-page searching.
Organize documents into folders and query many files in a single conversation to compare arguments, cross-reference findings, or study a whole syllabus at once.
Condense long papers, reports, and contracts into key takeaways, and translate or query documents in any language — including mixing a source language with a different question language.
Generate flashcards and slide decks from your material, and use the built-in AI writer and AI detector for drafting and checking academic text.
SpecialistAnthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.
SpecialistAnthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.
Free / Open-sourceCompletely free PDF reading and editing tool with AI assistant, though basic compared to dedicated platforms.
AI sidebar and browser agent for reading, writing and research
AI sidebar and browser agent for reading, writing and research
Free AI-powered PDF editor, converter and reader for every device
Free AI-powered PDF editor, converter and reader for every device
One AI assistant that plugs ChatGPT, Claude and Gemini into every tab
One AI assistant that plugs ChatGPT, Claude and Gemini into every tab
Combines full desktop PDF editing software with AI chat, but requires software installation for full features.
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
Includes robust developer APIs for custom document workflows, but free tier limits document page counts.
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
Strong multi-format document chat and form filling capabilities, but interface can feel slightly more cluttered.
Strong multi-format document chat and form filling capabilities, but interface can feel slightly more cluttered.
