
AI research platform for reading, understanding and writing scientific papers
AI research platform for reading, understanding and writing scientific papers
iTextMaster records 0 monthly visits with -100% month-over-month growth and Free pricing. PortableDocs records 3,823 monthly visits with -15.3% growth and Freemium pricing.

Private, browser-first PDF tools plus a developer PDF API
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | itextmaster.com | portabledocs.com |
| Pricing Model | Free | Freemium |
| Monthly Visits | 0 (0) | 3.82K (3,823) |
| MoM Traffic Delta | -1.33K (-100%) | -691 (-15.3%) |
| Primary Market & Share | 🌐 Global (—) | 🇺🇸 United States (79.8%) |
| Direct Visits / mo | 0 | 1.53K |
| User Rating | 4.3 | 4.2 |
| Supported Platforms | Website | Website |

Private, browser-first PDF tools plus a developer PDF API
A deep catalog covering merge, split, compress, linearize, OCR, encrypt, redact, flatten, metadata removal, format conversion and table extraction.
Most file tools run entirely in your browser, so everyday PDF work does not require uploading your document to a server.
Backend endpoints for merge, split, HTML-to-PDF, webpage-to-PDF, invoice generation, redaction and OCR, billed through monthly credits.
Tools that need server rendering, URL fetching or API processing state that clearly before you submit any data.
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.

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

Free AI-powered PDF editor, converter and reader for every device
Free AI-powered PDF editor, converter and reader for every device

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

Free browser-based PDF toolkit with AI OCR and chat
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

An all-in-one online PDF editor with AI chat, quizzes and invoicing
Chat with your documents and get answers you can verify
Chat with your documents and get answers you can verify