HydraPaper
HydraPaper is a free open-source PDF reader, annotator, and editor software for Windows. It allows viewing, annotating, and editing PDF documents with basic features like adding text, drawings, signatures, highlighting, and comments.
pdf
reader
annotator
editor
HydraPaper: Free Open-Source PDF Reader & Editors
Free open-source PDF reader, annotator, and editor software for Windows, allowing viewing, annotating, and editing of PDF documents with basic features.
What is HydraPaper?
HydraPaper is a free and open-source PDF reader, annotator, and editor software for Windows operating systems. It provides a clean and intuitive interface to view, annotate, sign, and edit PDF documents.
With HydraPaper, users can add text boxes, drawings, signatures, highlights, sticky notes and other comments to PDF files. It has basic PDF editing capabilities to add, delete or rotate pages in a PDF file. The annotation and editing features make it easy to collaborate on PDF documents.
Some of the key features include:
- Tabbed interface to open multiple PDFs
- Smooth page navigation and scrolling
- Zoom in/out pages for detailed reading
- Select and copy text from PDF documents
- Fill PDF forms and save the data
- Drawing tools to add shapes, arrows, lines etc.
- Add text boxes with options for font style, size, color etc.
- Highlight, strikeout and underline text
- Add sticky note comments
- Sign PDFs with image, text or drawing signature
- Basic PDF editing like add, remove, rotate pages
- Dark and light theme options
As an open-source software, HydraPaper is free to download and use. It works offline once installed and provides a capable free alternative to premium PDF apps without any feature limitations or watermarks.
HydraPaper Features
Features
- View, edit and annotate PDFs
- Add text, drawings, signatures, highlights and comments
- Support for multiple tabs
- Basic editing tools like cropping, rotating, deleting pages
- Dark and light mode
- Portable version available
- Open-source and free
Pricing
- Free
- Open Source
Pros
Free and open-source
Lightweight and fast
Good set of basic PDF editing tools
Support for annotations and comments
Multiple tab support
Dark mode available
Portable version available
Cons
Limited advanced PDF editing capabilities
No OCR support
Very basic user interface
Lacks some convenience features of paid alternatives
Not many customization options
No cloud storage integration
Official Links
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