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Auto Resize Image Requires Restart

Resizer for inline and attachment images (JPEG, PNG, BMP and GIF image formats).
All platforms are supported (Windows, Linux and Macintosh).

Rated 4 out of 5 stars (61)
244 users

Color Transform

Transform the colors of entire web pages or selected elements. Combine predefined themes with basic transforms. Save transforms for specific web domains.

Rated 4 out of 5 stars (25)
6 users

Image Zoom Requires Restart

Adds zoom and rotation functionality for images...

Rated 4 out of 5 stars (355)
160 users

Perfect View

Image viewer with smooth dynamic zoom, pan and rotate. View slide shows of images or files and capture page elements and tab content. Apply image filters. Save images in various formats.

Rated 4 out of 5 stars (15)
12 users

Colorific

Colorize entire web pages. Configure themes using sliders and drag-and-drop. Set domain preferences for automatic coloration.

Rated 4 out of 5 stars (14)
7 users

Display Contact Photo Requires Restart

Displays the contact photo/image/picture of the sender/recipient while reading or composing a message. Supports photos in a local folder and the 'Face' header for embedded photos. The add-on adds new generic photos and many styling possibilities.

Rated 4 out of 5 stars (117)
7 users

Column Reader

Web reader for wide screens and long documents. Read with pleasure in attractive layouts.

Rated 5 out of 5 stars (14)
6 users

Auto Resize JPEG Requires Restart

Resizer for inline and attachment images (only JPEG format).
For Windows only.

Rated 3 out of 5 stars (35)
1 user

Attachment Viewer: view in a tab, slideshow

View attachments in TB
Images, office files, mp3, mp4, text, js
Use Dropbox viewer for 175 file types (in v3)
* Docx, xlsx, pptx, pdf preview
* Slideshow of images
* Zoom/drag
* Rotate/flip image
* Download dialog with thumbnail of image

Rated 4 out of 5 stars (20)
3,725 users

Nostalgy++/ Manage, search and archive emails

Shortcuts to move/copy/archive messages, with folder name completion.
Rules for moving messages to folders.
Automatic rules by statistical observation/ by folder of conversation/thread.
Search dialog in a tab, with message display /folder tree.

Rated 5 out of 5 stars (77)
3,407 users

BrowseInTab

BrowseInTab lets you open and browse any link in a Thunderbird content tab. Links are followed within the tab and back/forward navigation is supported. Also with enhanced Zoom customization and a url bar.

Rated 4 out of 5 stars (13)
84 users