# ChatPDF vs Plume

ChatPDF records 1,044,477 monthly visits with -3.7% month-over-month growth and Freemium pricing. Plume records 0 monthly visits with — growth and Free pricing.

| Metric | [ChatPDF](https://openaitools.app/tool/chatpdf) | [Plume](https://openaitools.app/tool/plume) |
| :--- | :--- | :--- |
| Website URL | https://www.chatpdf.com | https://chromewebstore.google.com/detail/plume/eckjbdlnjcekjolcnadbnfpiihdpbgjg |
| Categories | AI PDF, AI Chatbot, AI PDF Summarizer, AI Summarizer | AI Article Summarizer, AI Summarizer, AI PDF Summarizer |
| Pricing Model | Freemium | Free |
| Monthly Visits | 1,044,477 | 0 |
| MoM Growth Rate | -3.7% | — |
| Primary Market | United States | Global |
| Direct Visits | 457,792 | 0 |
| Review Score | 4.2 | 3.4 |
| Saved Count | 279 | 0 |
| Supported Platforms | Website | Browser Extension |

## ChatPDF

ChatPDF started as a simple "chat with your PDF" utility and has grown into a full research and study workspace. You can drop in a PDF, Word document, PowerPoint deck, Markdown or text file, paste a link, or point it at a YouTube video, then ask questions in natural language. Answers are grounded in your sources and come with clickable citations so you can verify anything straight from the original page.

Beyond one-off Q&A, the platform supports folders and multi-file chats, so you can query a whole reading list at once and compare findings across documents. A side-by-side layout keeps the conversation and the document open together, while translation lets you read material in another language or ask questions in a language different from the source. The team has expanded the suite with an AI writer, AI detector, flashcards, slide generation, and a dedicated research mode.

Access is browser-based and device-agnostic, with desktop and mobile apps available. The free tier covers a limited number of documents per day with no sign-up required for the core experience, while the paid Plus plan removes limits and unlocks advanced features. Enterprise-grade handling (SSL in transit, encrypted storage, SOC 2 Type II storage provider) is advertised, and users can delete their documents at any time.

**Pricing & Plans:** Freemium. A free tier lets you analyze a limited number of documents per day, and the core chat experience works without creating an account. ChatPDF Plus is a paid subscription that adds unlimited document analysis and advanced features — check the site for current plan details and regional pricing.

- **Cited answers:** 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.
- **Multi-file chat and folders:** 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.
- **Summarization and translation:** 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.
- **Study and writing tools:** Generate flashcards and slide decks from your material, and use the built-in AI writer and AI detector for drafting and checking academic text.
- **Side-by-side reading view:** Keep the chat panel and the PDF open together so answers stay linked to the original content while you read along.

**Strengths:** Answers include clickable citations tied to the original page, which makes fact-checking straightforward; Works with PDFs, Word, PowerPoint, Markdown, text, YouTube links, and web pages in one place; No account needed to try the core chat experience, and the free tier covers light daily use; Multilingual: upload in one language and ask questions in another

**Limitations:** The free plan caps how many documents you can analyze each day; Advanced features such as unlimited analysis and the full study toolkit sit behind the paid Plus subscription; Very large documents or heavy multi-file sessions can be slower and may hit size limits

[Profile (Markdown)](https://openaitools.app/tool/chatpdf.md)

## Plume

Plume is a browser extension distributed through the Chrome Web Store that focuses on one job: shortening long text. When you land on a dense article, a multi-page research paper, or a wall of inline text, Plume condenses it into a shorter summary so you can decide what deserves a full read. The extension is deliberately minimal — the whole package is only around 11 KB, which keeps it out of the way of normal browsing.

The extension is aimed at people who read a lot on the web: students working through papers, professionals scanning industry news, and anyone who wants the gist of a document in seconds rather than minutes. Because it runs in the browser, there is no separate app or account workflow to manage; you install it and use it on the pages you visit.

The listing is maintained by an independent developer and is currently small, with roughly a few dozen users and no ratings yet. It is positioned as a simple, no-frills summarizer rather than a full research or note-taking suite, and the developer states that it does not collect or sell user data.

**Pricing & Plans:** Free to install and use from the Chrome Web Store. No paid tiers are advertised on the extension listing.

- **One-click article summaries:** Condense a long article into a short, clear summary directly in the browser instead of reading the whole page.
- **Works on research papers and documents:** Designed for dense text such as academic papers and long-form documents, not only news articles.
- **Runs inside Chrome:** Installs as a Chrome extension, so summaries are available on the pages you are already reading with no separate app.
- **Very small footprint:** The extension package is about 11 KB, keeping the browser light and startup fast.
- **Privacy-conscious data handling:** The developer's disclosure states that user data is not sold to third parties and is not collected for unrelated purposes.

**Strengths:** Free to use with no account setup required; Handles both web articles and academic or document-style text; Extremely small extension size, so it barely affects browser performance; Developer disclosure states data is not sold or used for unrelated purposes

**Limitations:** Small user base with no ratings yet, so independent quality signals are limited; Last listed update was mid-2024, so the pace of ongoing development is unclear; Chrome-only, with no Firefox, Safari, or mobile browser version advertised

[Profile (Markdown)](https://openaitools.app/tool/plume.md)

## Frequently Asked Questions

### How do ChatPDF and Plume compare in monthly traffic?

ChatPDF has 1,044,477 monthly visits, while Plume has 0. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

ChatPDF has a month-over-month growth rate of -3.7%; Plume has —.

### How does pricing compare?

ChatPDF: Freemium. Freemium. A free tier lets you analyze a limited number of documents per day, and the core chat experience works without creating an account. ChatPDF Plus is a paid subscription that adds unlimited document analysis and advanced features — check the site for current plan details and regional pricing. Plume: Free. Free to install and use from the Chrome Web Store. No paid tiers are advertised on the extension listing.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [Claude](https://openaitools.app/tool/claude-2) | 1,253,439,413 | +23.8% | Freemium | Anthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing. | [.md](https://openaitools.app/tool/claude-2.md) |
| 2 | [PDFgear](https://openaitools.app/tool/pdfgear) | 2,845,280 | -3.4% | Free | Completely free PDF reading and editing tool with AI assistant, though basic compared to dedicated platforms. | [.md](https://openaitools.app/tool/pdfgear.md) |
| 3 | [LightPDF](https://openaitools.app/tool/lightpdf-com) | 1,742,568 | -15.3% | Freemium | Free AI-powered PDF editor, converter and reader for every device | [.md](https://openaitools.app/tool/lightpdf-com.md) |
| 4 | [UPDF AI](https://openaitools.app/tool/updf-ai) | 1,050,387 | -7.2% | Freemium, Free Trial, Paid | Combines full desktop PDF editing software with AI chat, but requires software installation for full features. | [.md](https://openaitools.app/tool/updf-ai.md) |
| 5 | [Glasp](https://openaitools.app/tool/glasp) | 889,564 | -14.1% | Freemium | Highlight the web, learn in public, and build your AI clone | [.md](https://openaitools.app/tool/glasp.md) |
| 6 | [Summarizer.org](https://openaitools.app/tool/summarizer-org) | 398,509 | +1.3% | Freemium | Free AI Summarizer for text, articles, URLs and images | [.md](https://openaitools.app/tool/summarizer-org.md) |
| 7 | [PDF.ai](https://openaitools.app/tool/pdf-ai) | 387,819 | -5.5% | Freemium, Free Trial | Includes robust developer APIs for custom document workflows, but free tier limits document page counts. | [.md](https://openaitools.app/tool/pdf-ai.md) |
| 8 | [Kome AI](https://openaitools.app/tool/kome-ai) | 174,910 | -6.5% | Freemium | Summarize, bookmark and write with AI right in your browser | [.md](https://openaitools.app/tool/kome-ai.md) |
| 9 | [AskYourPDF](https://openaitools.app/tool/askyourpdf) | 127,733 | +14.1% | Freemium | Strong multi-format document chat and form filling capabilities, but interface can feel slightly more cluttered. | [.md](https://openaitools.app/tool/askyourpdf.md) |
| 10 | [TLDR This](https://openaitools.app/tool/tldr-this) | 82,609 | -20.5% | Free | Turn any long article or webpage into a clean, clickable summary in one click | [.md](https://openaitools.app/tool/tldr-this.md) |

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Source: https://openaitools.app/compare/chatpdf-vs-plume

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