Home > News > Thumbnail Zoom Plus 1.7.1 Released – Captions, Hotkeys, More Sites, etc.

Thumbnail Zoom Plus 1.7.1 Released – Captions, Hotkeys, More Sites, etc.

Version 1.7.1 of Thumbnail Zoom Plus has been released.  You can install it from the Mozilla Add-ons Page.

Here’s what’s new since 1.6.0:

New Features

You Control The Zoom:  you can control how large the image is displayed:

  • Hotkeys ‘+’ and ‘-‘ let you zoom larger or smaller and key ‘d’ remembers that zoom for future pop-ups (see the Hotkeys section below).
  • Added “Default Zoom (%)” preference. Images will be enlarged this much larger than their full resolution (if window size allows) so you can see the image even larger. Note that you may see image compression artifacts when this is larger than 100.
  • Default Zoom is initially set to 144%, letting you see the image even larger than before.

Zoom % Display: Pop-ups now show text like “75%”, indicating how large the pop-up is compared to the full-resolution image. When the add-on doesn’t show a pop-up because there isn’t enough screen space, it temporarily shows how large the thumbnail is compared to the full-resolution image so you know if it’s worth opening the image in a new tab.  Configurable in Preferences.

Captions: the thumbnail’s caption text is shown at the bottom of the pop-up.  Configurable in Preferences.

Hotkeys: when the pop-up is displayed, you can use these hotkeys (without holding Control or Command):

Open / Close the Pop-up:

  • “Escape” closes the pop-up.
  • “Control” when entering the thumbnail causes the pop-up not to appear.  Configurable in preferences.

Site & Position:

  • “Shift” temporarily lets you see the image larger by turning on “Show pictures using All available space” and setting zoom to 200%.  Configurable in preferences.
  • “-” (minus) and “+” (plus or equals) decrease or increase the zoom size of the current pop-up
  • “Zero” resets the zoom size of the current pop-up to 100%
  • “d” saves the current pop-up zoom size to the “Default Zoom (%)” preference for future pop-ups.
  • “a” toggles the “Show pictures using All available space” preference.


  • “c” toggles the “Show caption” preference.

Open In New Tab or Window; Save:

  • “t” opens the pop-up image in a new tab; useful when the image is larger than fits in the current window.
  • “n” opens the pop-up in a new window (an alternative to “t”).
  • “s” saves the pop-up image to a file.

Open Help or Preferences Dialog:

  • “p” opens the Thumbnail Zoom Plus Preferences dialog
  • “h” takes you to the Thumbnail Zoom Plus Help page
  • For more details see “Hotkeys” in the User Manual.

Prevent Pop-ups: Preferences now have the option for a key to not display pop-ups

Help: Clicking “Help” in the Preferences dialog or toolbar menu or pressing “h” while the pop-up is displayed takes you to the Thumbnail Zoom Plus web site for documentation or support.

Supported Sites

Added support for:

Improved support for

Bug Fixes

This release includes several bug fixes, including:

  • no longer pops up when scrolling a thumbnail into the mouse; prevents undesired pop-ups on sites like Google Images.
  • fixed a problem on Linux which caused pop-ups too appear tall and narrow.
  • honors the page’s zoom factor better; works with “nosquint” better.

New Support Site, User Manual, & Facebook Page

Our new website, thumbnailZoomPlus.wordpress.com includes a user manual, release announcements, and support info.  You can also find us on Facebook.

Thanks to our beta testers and everyone who sent suggestions and feedback to firefox.add.on@davidadler.name .

  1. April 28, 2012 at 6:10 am

    Thanks David for all you hard work. This one of my favorite Firefox Addons. Saving viewing images time (not having to click and go to another page) and fun with those tiny images. 😉

  2. April 29, 2012 at 10:14 am

    This was originally released as 1.7.0, which was replaced by 1.7.1 after I fixed a small bug related to captions.

  3. tcusr
    May 3, 2012 at 12:07 pm

    Thanks for this great addon, I saved a lot of time.
    A further request, could you support pixiv.net?
    Thanks again.

    • May 5, 2012 at 1:55 am

      I tried to add pixiv.net for the next version but it only works on images which you’ve already displayed full-size because the site blocks requests which don’t have the site’s “referrer” http header. I hope to fix that issue in the future but it’ll take some work, and only affects a small number of sites.

  4. HurrDurr
    May 6, 2012 at 12:09 am

    Thanks, this is truly one of the most usefull addons that I have installed.
    On this release however, I think that there is a problem when disabling the addon on Facebook, since images still get shown (I already have the Social Fixer addon which does that for me on Facebook).

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