About

Go to the Firefox Add-on’s Page to add it to your Firefox.

Thumbnail Zoom Plus is a Firefox plug-in which shows a full-size image pop-up when you hover over a thumbnail or image link, like this:

When you hover your mouse over a thumbnail or an image or video link, the add-on displays the full-size image or video still-frame in a floating window.

The image remains visible until you move the mouse outside the thumb, click the mouse, or press Escape. It’s quick and easy to move the mouse from one thumbnail to another to see the corresponding full-size images.  For details see our User Manual.

Compatible Sites

Supported sites include Amazon, Bing, Facebook Flickr Google IMDb, LinkedIn, Netflix, Pinterest, Reddit, Tumblr, Twitter, Yandex.ru, YouTube, Wikipedia, WordPress, Yahoo Images, and many more.  For a more complete list see the Compatible Sites page.

Support

See our Support page to ask questions or report problems.  Emailing us is better than reporting bugs via the Mozilla Add-ons reviews page.

Note: To avoid problems we recommend you uninstall or disable the original Thumbnail Zoom add-on before using Thumbnail Zoom Plus.

Beta Version

If you want to try the latest-and-greatest, and don’t mind the risk of a bug or two, consider installing the beta version. Send beta feedback to firefox.add.on@davidadler.name .

Author

Thumbnail Zoom Plus is written by me — David Adler, based on the original “Thumbnail Zoom” add-on, which was written by Andres Hernandez.

I’m a professional software engineer; this add-on is an after-hours project.

  1. December 18, 2013 at 7:35 am

    would love to see this addon for chrome as well 😦

    • December 26, 2013 at 4:36 pm

      I’m sorry but it would be a lot of work to convert to Chrome (though Hover Zoom for Chrome is similar).

  2. Mo
    December 21, 2013 at 10:17 pm

    Thanks so much for building and maintaining such a great plugin.

  3. October 20, 2014 at 5:36 am

    Awesome. Thank-you. I have the tool bar icon displayed and clicking on it toggles it on and off as advertized (YAY !) But.. Maybe you could make the icon indicate whether the thing is on or off. Now the only way to tell is to move the cursor and see if something zooms (assuming you’re not troubleshooting a problem or aren’t on a site where there may be compatibility issues) Besides this would be in accordance with the UI guide lines of, well pretty much every GUI out there. Even just changing the blue magnifying glass in the little box to gray would be enough. Just adding a line at the top of the dropdown menu “Thumbnail Zoom is: ENABLED/DISABLED would be enough and possibly easier. Sorry if this is a double post, couldn’t figure out how to edit one.

    • October 24, 2014 at 10:37 pm

      The toolbar button should show a red “X” symbol over the icon when it’s disabled. Is that not working for you? If not, what version of Firefox? What operating system?

  4. Hans Castorp
    February 22, 2015 at 2:34 pm

    Great Addon! Trusted!

  5. August 27, 2016 at 6:50 pm

    Great tool!
    But I have a question about privacy. HoverZoom (for Chrome) collect some information.
    Do you collect any information with this add-on? Even if it’s anonymous info.

    • December 30, 2016 at 11:02 pm

      Thumbnail Zoom Plus does not collect any information. I have refused offers from 3rd-parties who wanted to pay me to add their snooping or advertising code to TZP — I want it to stay free and preserve privacy!

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