236 reviews for this add-on
  • Severe problem and that is once installed never can download an epub again as it just opens it! It needs to give option as sometimes I want to download not read right away. So I had to uninstall this is a severely crippling feature.

  • Nice addon

  • Great addon, but some important features are missing:

    1. Option to search the whole book content.
    2. Option to highlight text.
    3. Reading progress bar.

  • Good, hope to be improved in future.

  • Very quick reply from developer and all issues fixed promptly hence 5 stars. This is the best Epub reader right now.

    Thanks for this great addon.

  • Very useful,but as clmuz says: "Can't delete icon ePub catalogue in instruments panel, each time I open book this icon creates again." Hope you can fix it,thanks.

  • It doesn't honor font sizes dictated by custom styles (like section headings for chapters). Other than that, it works very well.

  • All that you need!

  • Opens two tabs when opening a documents from the disk.
    Can't delete icon ePub catalogue in instruments panel, each time I open book this icon creates again

  • Al momento non ho termini di paragone, comunque mi sembra bene.

  • This has better compatibility(when dealing with images used in the midst of text, like latin words) than most epub readers I tried(including iBooks on my iPad). The only alternative to this which I know has similar compatibility, is an app called Marvin on iPad.

  • Great. Allows you to read books / EPUB files on your browser, no spyware, no hassle, simple and to the point.

    IMO the only things missing are 1) night time reading mode; 2) page number estimate / display and 3) conversion to PDF tool.
    Apart from that, the good points: fast and stable; crossplatform; simple GUI and options for changing text size, and has a good library management tool.

  • Doesn't seem to have any way to show page numbers or skip to a specific page. Pretty useless in that regard.

  • A nice addon . It can be used on any operating system (crossplatform)

  • I did not know that this was even possible without installing a separate software

  • our book in a little firefox world; simple wonderful

  • This is great, thank you!!

  • Thanks!

  • It seems to do a decent job, but 2 caveats so far.
    It puts a "catalog" icon to the left of the "Home" icon, and you cannot change it in any way. 2 Problems:
    1) This disabled the downloads access (The arrow is gone)
    2)The "hotspot" is active even in the full screen mode when the icon is invisible. If you mouse over the hotspot, the screen jumps all over the place.

    They're deal breakers for me, but many of you may not care.

  • I can't find where to change interface language to English

  • I've been looking for a reader that allowed user choice of background and text colors. I could not find that feature in other readers, such as Adobe Digital Editions and Sumatra PDF. But this one does it! Now I can read in the middle of the night and not wake up my dear wife.

    I cannot comment further, but just had to add my thanks for this particular feature.

  • Easy to use and Simple

  • Really handy add on, thank you :)

  • All GooD!!
    but add other files too (fb2, rtf, txt), pleeease =)

  • It definitely does the most basic function. I would definitely like to see improvement on it though such as night-time reading (allowing black bg, white text for easier reading), page numbers included, and perhaps a mobile app it syncs with so that way if I get ahead on my phone, the browser version will not be behind when I switch devices.