Archives For November 30, 1999

gnome shell

This quick tutorial shows you how to easily resize or rotate a mass of image files in Ubuntu 18.04.

Nautilus, Gnome default file browser, has an extension called nautilus-image-converter. It adds “Resize images” and “Rotate images” options into context menu of image files, that allows to easily resize / rotate a mass of images.

With the two new options, you can resize images to a selected size, custom size, or scale images with given percent.

You can also rotate a mass of images with a selected angle or custom angle.

To install the Nautilus extension, open terminal either via Ctrl+Alt+To or by searching for ‘terminal’ from app launcher. When it opens, run command:

sudo apt-get update && sudo apt-get install nautilus-image-converter

Input your password (no visual feedback while typing due to security reason) when it prompts and hit Enter.

Once installed, close all current file browser windows, and open it again. Or run command nautilus -q if you still don’t see the resize and rotate options.

This quick tip shows you how to set custom color or emblem of a folder in Ubuntu 18.04 Nautilus file browser.

For those who want to have a different look and feel on folder icons, folder-color extension allows to change the color or emblem of selected folder in the default Nautilus file browser.

1. Open terminal (Ctrl+Alt+T) and run command to install the folder-color extension.

sudo apt-get update && sudo apt-get install folder-color

Input your password (no visual feedback while typing due to security reason) when it prompts and hit Enter.

2. Then re-open Nautilus (Files) file browser, and right-click on a folder. You’ll be able to choose a color or emblem, or set a custom color of the folder.

Note that if you don’t see the context menu “Folder’s color”, quit Nautilus via command nautilus -q and open the Files again.

After receiving an installation file from the download server, we check its checksums to verify data integrity.

Other than running a Linux command or using a graphical tool, a Nautilus (the default file browser in Ubuntu Gnome) extension, nautilus-gtkhash, is available for computing checksums and showing them in file’s properties dialog box.

To install the extension, open terminal (Ctrl+Alt+T) and run command:

sudo apt-get install nautilus-gtkhash

Input your password (no visual feedback while typing) when it prompts and hit Enter

Once installed, restart Nautilus via command:

nautilus -q

Finally, right-click on your file and go to Properties dialog. Under Digests tab, click the Hash button to compute checksums and enjoy!


The developer of Touchpad indicator recently announced a new tool: Nautilus-Image-Tools. It’s an Nautilus extension allows to quickly manipulate your pictures through context menu.

The extension currently includes following functions:

  • black and white
  • blur
  • border, add white border
  • contour
  • convert to other file format,
  • enhance
  • flip
  • greyscale
  • negative
  • resize
  • rotate
  • shadow
  • vintage
  • watermark

Here are some screenshots:

nautilus image tool blur

nautilus image tool with white border

nautilus image tool negative

nautilus image tool with shadow (png)

Install Nautilus Image tool extension:

Press Ctrl+Alt+T on keyboard to open terminal. When it opens, run commands below to install it from developer’s ppa. Supports Ubuntu 13.10, Ubuntu 13.04, Ubuntu 12.10 and Ubuntu 12.04.

sudo add-apt-repository ppa:atareao/nautilus-extensions

sudo apt-get update

sudo apt-get install nautilus-image-tools

nautilus -q

NOTE that this extension is still in development stage. It sometimes freeze your browser and you need to restart it to fix the problem.

Once installed, right-click on an image file and see: