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iSafePDF VS calibre

Compare iSafePDF VS calibre and see what are their differences

DocRaptor
As the only API powered by the Prince HTML-to-PDF engine, DocRaptor provides the best support for complex PDFs with powerful support for headers, page breaks, page numbers, flexbox, watermarks, accessible PDFs, and much more featured
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iSafePDF logo iSafePDF

iSafePDF is a free open source PDF protection software.

calibre logo calibre

Ebook manager, viewer & converter
  • iSafePDF Landing page
    Landing page //
    2021-09-19
  • calibre Landing page
    Landing page //
    2024-07-10

iSafePDF features and specs

  • Open Source
    iSafePDF is an open-source project, allowing users to modify and improve the software as needed. This fosters a collaborative environment and can lead to more robust and secure features over time.
  • Free to Use
    Being open source, iSafePDF is free to download and use, making it accessible for individuals and organizations with limited budgets.
  • Ease of Use
    The user interface of iSafePDF is designed to be straightforward and user-friendly, making it easy even for non-technical users to interact with the application.
  • Strong PDF Encryption
    iSafePDF offers strong encryption techniques for securing PDF files, which helps in protecting sensitive information from unauthorized access.
  • Signature Creation and Verification
    iSafePDF supports creating and verifying digital signatures, which adds an extra layer of security and authenticity to PDF documents.

Possible disadvantages of iSafePDF

  • Limited Advanced Features
    Compared to some commercial alternatives, iSafePDF might lack some advanced features such as cloud storage integration, extensive document editing, or batch processing.
  • Community Support
    As an open-source project, the level of support may vary and depend largely on community involvement. This could result in slower resolutions to issues and fewer updates.
  • Platform Dependence
    iSafePDF may not be as platform-agnostic or optimized for all operating systems compared to some of the more widely adopted commercial PDF security tools.
  • User Interface Design
    While functional, the user interface might not be as polished or modern-looking as some commercial alternatives, which could affect user experience.
  • Training and Documentation
    The availability of comprehensive training materials and documentation might be limited compared to paid software, which can present a learning curve for new users.

calibre features and specs

  • Open Source
    Calibre is free and open source, meaning it is continually being improved upon by a community of contributors, and there are no costs associated with its use.
  • Wide Format Support
    The software supports a vast array of eBook formats, making it versatile for users who have different types of eBooks.
  • Library Management
    Calibre offers powerful library management tools that allow users to organize and categorize their eBook collections with ease.
  • Conversion Tools
    The software includes robust conversion tools to convert eBooks between different formats, enabling compatibility with various eReaders.
  • Customization
    Offers a high level of customization options, from tweaking the user interface to creating custom metadata fields.
  • Cross-Platform Compatibility
    Calibre is available on multiple operating systems including Windows, macOS, and Linux.
  • Plugin Support
    Calibre supports plugins, allowing users to extend its functionalities according to their needs.

Possible disadvantages of calibre

  • Complex Interface
    The user interface can be overwhelming for beginners due to its vast features and options.
  • Performance
    Calibre can be slow, especially when handling large libraries or performing format conversions for large eBooks.
  • Resource Intensive
    The software can be resource-intensive, consuming significant CPU and memory during operations like conversion and library management.
  • Aesthetic
    While functional, the user interface is sometimes criticized for being outdated and less visually appealing compared to modern applications.
  • Limited Mobile Support
    Calibre's primary use is on desktop platforms, and its mobile support is limited, making it less convenient for users who primarily use mobile devices.
  • Learning Curve
    Due to its vast array of features and customization options, there is a steep learning curve for new users.
  • Updates
    Frequent updates, while generally a positive attribute indicating active development, can sometimes cause disruptions or require users to frequently adapt to changes.

Analysis of iSafePDF

Overall verdict

  • iSafePDF is a good choice for individuals and small businesses who need a user-friendly and accessible way to enhance the security of their PDF documents without the need for complex software solutions.

Why this product is good

  • iSafePDF is a convenient tool for users looking to secure their PDF documents with encryption and other security features. It allows users to apply passwords and permissions to their PDFs, ensuring that sensitive information remains protected. The service is straightforward to use and does not require any software installation, making it accessible from any device with internet access.

Recommended for

  • Individuals who need to secure personal documents
  • Small businesses looking to protect sensitive information
  • Educators and students who want to control access to academic materials
  • Non-profits and organizations managing confidential reports

Analysis of calibre

Overall verdict

  • Yes, Calibre is considered a good option for managing and converting e-books, especially for those who require versatility and extensive format support.

Why this product is good

  • Calibre is widely regarded as a good tool because it is a free and open-source e-book management application that supports a variety of file formats and provides robust features for managing e-book collections. Users appreciate its ability to convert e-books from one format to another, its comprehensive metadata editing capabilities, and its powerful library management functionalities. Additionally, Calibre has an active development team and community, ensuring frequent updates and improvements.

Recommended for

  • Individuals who manage large e-book libraries.
  • Users who need to convert between different e-book formats.
  • Readers who prioritize customization and detailed metadata editing.
  • People who prefer open-source software solutions.

iSafePDF videos

No iSafePDF videos yet. You could help us improve this page by suggesting one.

Add video

calibre videos

+ Add

Why I Stopped Watching Calibre on Netflix in 10 Minutes! | Flick Connection Podcast Clip (Ep. 11)

More videos:

  • Review - Calibre (2018) - Netflix Movie Review (Non-Spoiler)
  • Review - Calibre: Ending Explained (Netflix Original Movie 2018)
  • Tutorial - Calibre | Free e-Book Software. Getting Started.

Category Popularity

0-100% (relative to iSafePDF and calibre)

iSafePDF

calibre

PDF Tools
66 66%
PDF Tools
34% 34
eBook Manager
0 0%
eBook Manager
100% 100
PDF Editor
100 100%
PDF Editor
0% 0
eBook Reader
0 0%
eBook Reader
100% 100

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare iSafePDF and calibre

iSafePDF Reviews

We have no reviews of iSafePDF yet.
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calibre Reviews

Top 10 Free eBOOK Readers for PC
If you are looking for the best eBook reader for your PC, you can try Calibre. It is a user-friendly and useful eBook managing tool that is a must-have for every reader. Besides being completely open-source and free, Calibre offers users an easy-to-use and comprehensive toolset meant to bring out the best in your eBooks.
Source: updf.com
8 Best eBook Readers for Linux
Calibre is one of the most popular eBook apps for Linux. To be honest, it’s a lot more than just a simple eBook reader. It’s a complete eBook solution. You can even create professional eBooks with Calibre.
Source: itsfoss.com
10 of the Best Ebook Readers for Windows, macOS, and Mobile
The Calibre ebook reader is one of the best ebook management tools to help you read and organize your entire library. Calibre is portable and cross platform, so it’s available on nearly every device you own.
Source: www.maketecheasier.com
Best 5 eBook Manager
Calibre is a powerful and easy to use e-book manager. calibre ebook management supports organizing existing e-books into virtual libraries, displaying, editing, creating and conversion of e-books, as well as syncing e-books with a variety of e-readers. It also supports many file formats and reading devices. Most e-book formats can be edited, for example, by changing the...
Source: www.epubor.com

Social recommendations and mentions

Based on our record, calibre seems to be more popular. It has been mentiond 551 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

iSafePDF mentions (0)

We have not tracked any mentions of iSafePDF yet. Tracking of iSafePDF recommendations started around Mar 2021.

calibre mentions (551)

  • anaconda on Xubuntu 24.04
    If I make the environment variable persistent in my .profile, Calibre's ebook reader does not work. - Source: dev.to / 5 months ago
  • All Kindles can now be jailbroken
    I suspect most people that go this route (ie download and manage their own ebooks, then transfer them to their Kindle) use Calibre, which afaik, is unaffected by this change. https://calibre-ebook.com/. - Source: Hacker News / 8 months ago
  • From RSS to My Kindle
    Very neat. I've been doing this with Calibre (https://calibre-ebook.com/), which involves plugging it into your PC via USB. Simple RSS feeds work with little configuration, and more complicated news sites require writing a custom python "recipe". This project uses Amazon's email gateway, which I think is limited to 25 articles per month (don't quote me on this). - Source: Hacker News / over 1 year ago
  • Gio UI – Cross-Platform GUI for Go
    Lol. One of good cross platform example is Calibre [1], built with Python and Qt. And it’s the only one I carried with me from Windows XP/10 to macOS, through Linux. Another is Sublime Text. [1]: https://calibre-ebook.com/. - Source: Hacker News / over 1 year ago
  • Glider – open-source eInk monitor with an emphasis on low latency
    >I'd prefer for it to work as USB stick like other ebooks do Have you tried Calibre? https://calibre-ebook.com/. - Source: Hacker News / over 1 year ago
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What are some alternatives?

When comparing iSafePDF and calibre, you can also consider the following products

Foxit PhantomPDF - Edit PDF files with our feature-rich PDF Editor. Download Foxit PDF Editor to convert, sign, scan / OCR & more. A speedy PDF Editor alternative to Adobe Acrobat.

FBReader - FBReader is an e-book reader for various platforms. Features:

PDF24 PDF Creator - Create PDF and convert documents to PDF for free with the free PDF24 PDF Creator.

Calibre Web - Calibre Web is a web app providing a clean interface for browsing, reading and downloading eBooks...

PortableSigner - PortableSigner is a signing (with X.509 certificates) program for PDF files.

Sumatra PDF - Sumatra PDF is a slim PDF/DjVu/EPUB/XPS/CHM/CBR/CBZ/MOBI viewer for Windows.

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