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Online PDF editing with page-layout and archive tools

PDF work across web, desktop, and mobile

PDF editing with team review and conversion workflows

Windows batch PDF processing with command-line control

Open-source validation for PDF/A and PDF/UA

Pen-oriented PDF markup with review and sharing tools

Change PDF text and replace images on desktop

Simple PDF completion with embeddable business workflows

Browser PDF processing with a visual workflow builder

A multi-document PDF canvas with page dragging

Combine PDF tasks into reusable workflows

PDF reading and editing for Mac, iPhone, and iPad

Windows PDF editing organized into four task modes

Free desktop PDF editing alongside a separate SDK offering

PDF editing with text reflow and document conversion

Combine conversion, page arrangement, and PDF export options

Interpret and process PDF and PostScript documents

A cross-device Markdown editor with a free writing core and an optional lifetime Pro upgrade.

Batch PDF export to office files, text, and images

AI chatbot for your website and chat with any PDF

AI presentation generator that turns notes, outlines, or PDFs into designed slides.

AI presentation maker that turns prompts or files into editable slides

A multi-format notebook for handwriting, PDFs, voice notes, and study documents.

A teaching whiteboard with video calls, lesson materials, and PDF or image annotation.