
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.
LightPDF records 1,742,568 monthly visits with -15.3% month-over-month growth and Freemium pricing. PortableDocs records 3,823 monthly visits with -15.3% growth and Freemium pricing.
Every PDF task in one secure suite — plus AI chat with your documents
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | lightpdf.com | portabledocs.com |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 1.74M (1,742,568) | 3.82K (3,823) |
| MoM Traffic Delta | -314.58K (-15.3%) | -691 (-15.3%) |
| Primary Market & Share | 🇮🇳 India (24.9%) | 🇺🇸 United States (79.8%) |
| Direct Visits / mo | 442.07K | 1.53K |
| User Rating | 4.2 | 4.2 |
| 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.
Every PDF task in one secure suite — plus AI chat with your documents
Ask questions in natural language and get summaries and extracted insights from long documents without reading every page yourself.
Export PDFs to editable Word documents, merge or split files, reorder and rotate pages, and compress large scans for easier sharing.
Encrypt documents with 256-bit password protection and permanently blackout confidential text before sharing files externally.
Stamp diagonal watermarks or consistent footers such as 'Page X of Y', remove unwanted pages, and attempt to fix corrupted PDFs that will not open.

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.

AI research platform for reading, understanding and writing scientific papers
AI research platform for reading, understanding and writing scientific papers
A free, AI-powered PDF editor for every device
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.

All-in-one online PDF editor with AI helpers for reading, summarizing, and generating documents
All-in-one online PDF editor with AI helpers for reading, summarizing, and generating documents

Cross-platform PDF editing with GPT-powered AI for reading, translating, and signing documents
Chat with any PDF, video, or website and get cited answers in seconds
Chat with any PDF and get cited answers instantly
Chat with any PDF and add an AI chatbot trained on your own content
Chat with any PDF and add an AI chatbot trained on your own content

SpecialistDelivers superior OCR accuracy for converting complex PDFs and scans, but lacks general-purpose PDF editing tools.