LightPDF records 1,742,568 monthly visits with -15.3% month-over-month growth and Freemium pricing. SurfSense records 61,868 monthly visits with -17.4% growth and Freemium, Free Trial, Contact for Pricing pricing.
Free AI-powered PDF editor, converter and reader for every device
A private, offline notebook that turns your own sources into reports, decks and briefings
| Dimension / Metric | | |
|---|---|---|
| Official Domain | lightpdf.com | surfsense.com |
| Pricing Model | Freemium | Freemium, Free Trial, Contact for Pricing |
| Monthly Visits | 1.74M (1,742,568) | 61.87K (61,868) |
| MoM Traffic Delta | -314.58K (-15.3%) | -13.08K (-17.4%) |
| Primary Market & Share | 🇮🇳 India (24.9%) | 🇺🇸 United States (23.3%) |
| Direct Visits / mo | 442.07K | 21K |
| User Rating | 4.2 | 4.5 |
| Supported Platforms | Website | Website |
Free AI-powered PDF editor, converter and reader for every device
Upload a PDF and ask questions in natural language, follow up on details and see which passages the answers came from. A separate chat mode works with YouTube videos.
Translate whole documents, including scanned and image-based PDFs, into 20+ languages while keeping the original formatting and layout intact.
Convert invoices, receipts, bank statements and purchase orders into structured, editable Excel files automatically.
Edit text and images, OCR scanned pages, convert to and from Office formats, then merge, split, compress, watermark, sign and annotate.
A private, offline notebook that turns your own sources into reports, decks and briefings
Install a normal desktop app on Windows, macOS or Linux and run it with no account. With a local model you can pull the network cable and keep querying your indexed sources, since nothing is sent to a vendor.
Choose a bundled local Qwen or Gemma model at first launch, or paste a key for OpenAI, Anthropic or any OpenAI-compatible endpoint. The model is a setting rather than a fixed vendor choice.
Turn one set of sources into slide decks, reports, briefing notes, podcasts, mind maps, flashcards, quizzes, Markdown, Word, PDF, HTML and spreadsheet outputs — generated and stored locally.
Optional plugins pull research from Google Search, Reddit, YouTube, Instagram, TikTok, Google Maps, Amazon, Walmart, Indeed and the open web, and anyone can register their own MCP server.
SpecialistOpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
SpecialistOpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
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.
SpecialistEnterprise-grade neural machine translation, AI writing refinement, and real-time voice translation across thirty-plus global languages.
SpecialistEnterprise-grade neural machine translation, AI writing refinement, and real-time voice translation across thirty-plus global languages.
Offers a completely free PDF editing and AI assistant experience, but lacks some of LightPDF's cloud-native collaboration features.
Offers a robust desktop suite for OCR and editing, but requires software installation unlike cloud platforms.
Offers a robust desktop suite for OCR and editing, but requires software installation unlike cloud platforms.
Provides quick browser-based PDF editing and e-signatures, but has a less advanced conversational AI assistant.
Provides quick browser-based PDF editing and e-signatures, but has a less advanced conversational AI assistant.
Provides a more polished cross-platform desktop PDF editing suite, but requires a paid upgrade for full AI features.
Chat with any PDF, video, or website and get cited answers in seconds
Free / Open-sourceOwn your intelligence: a private AI assistant that runs entirely on your machine
Free / Open-sourceOwn your intelligence: a private AI assistant that runs entirely on your machine
Excels at developer API integration and chatting with PDFs, but lacks comprehensive traditional PDF editing tools.
AI agents that turn your own documents into summaries, mind maps and reports
AI agents that turn your own documents into summaries, mind maps and reports
Features interactive PDF chat and form filling, but has fewer advanced desktop editing and conversion options.
Features interactive PDF chat and form filling, but has fewer advanced desktop editing and conversion options.
