calibre Portable 5.33.2 (ebook manager, viewer, converter) Released

John T. Haller's picture
Submitted by John T. Haller on December 10, 2021 - 5:01pm

A new version of calibre Portable has been released by calibre is an ebook manager, converter, and viewer with support for a variety of formats and devices. It's in Format so it can easily integrate with the Platform. And it's open source and completely free.

Update automatically or install from the portable app store in the Platform.


Screenshotcalibre is a powerful and easy to use e-book manager. It’ll allow you to do nearly everything and it takes things a step beyond normal e-book software. It supports conversions from nearly all ebook formats and has specific support for numerous ebook devices.

Learn more about calibre... Installer / Format

calibre Portable is packaged in a Installer so it will automatically detect an existing installation when your drive is plugged in. It supports upgrades by installing right over an existing copy, preserving all settings. And it's in Format, so it automatically works with the Platform including the Menu and Backup Utility.


calibre Portable is available for immediate download from the calibre Portable homepage. Get it today!

Story Topic:


Avast has detected this update as infected by Win32:Malware-gen. Is it a false positive?
it's been 4 days since I sent the file to analyze and Avast keeps blocking it, so I wonder if it's a true positive alert.

Edit: Thanks a lot for your quick answer and everything else. I've installed Calibre. Avast finds viruses in the installer file and no viruses in the installed folder.

RaphaelRB - Brazil

John T. Haller's picture

As always, before it was posted, calibre Portable 5.33.2 was scanned in 70 antivirus engines using VirusTotal. You can check the scan yourself by clicking to the calibre Portable homepage, clicking the Antivirus Scan link just below the download button, and clicking the VirusTotal link. You'll see this:

Win32:Malware-gen means Avast didn't actually detect malware. It's a generic detection of something it thinks could be an issue and it's up to the user to decide. So, Avast is wrong again here. You'll need to allow it yourself because they likely won't fix their error. You'll see this issue often with free antivirus products like Avast and AVG.

UPDATE: Avast has an issue with NSIS 3.08, which the PA.c Installer uses as a base despite the fact that it is clean and has been out for almost 3 months.

Sometimes, the impossible can become possible, if you're awesome!