Posts Tagged ‘image’

extract images from browser cache

February 9, 2020 Leave a comment

I saw an image one day that disappeared the next day. It should be in my my browser’s cache (I use Firefox). How to see the content of the cache?

I found a freeware software for Windows that does the job, it’s called MZCacheView. I have a Windows 10 virtual machine where I installed this software. From Linux I copied my browser’s cache to Windows (via a shared folder), and then with MZCacheView I could visualize the images in the cache.

Unfortunately, I didn’t find the image in full-size, but I found its thumbnail. Well, more than nothing :)

Categories: firefox, windows Tags: , ,

image viewer for rotating images

December 14, 2019 Leave a comment

I needed a simple image viewer with which I could rotate some images quickly. And then, of course, save the images after rotation.

The image viewer Mirage did the job for me. Under Manjaro, I could install it from AUR.

See for a list of alternative image viewers.

Categories: linux Tags: , ,

crop images easily

November 2, 2019 Leave a comment

You have lots of images and you want to crop them. How to do it without losing your hair?

I just found a nice little hobby project for this:

Under Manjaro, I had to install tkinter too: “sudo pacman -S tk“.

Reddit discussion here.

Categories: python Tags: , ,

How to append images vertically?

February 26, 2019 Leave a comment

With youtube-dl I downloaded all the videos of a YouTube playlist. I also wanted to have a screenshot with all the videos of the playlist that contains the thumbnails, the titles, etc. As the playlist contained many videos and thus they didn’t fit on one page, I took several screenshots. For example, 01.png contained videos from 1 to 9, 02.png contained videos from 10 to 18, etc.
However, instead of several screenshots, I wanted just one long screenshot with everything. How to concatenate images vertically?

Using convert from ImageMagick:

convert -append 1.png 2.png full.png

This tip is from here.

Categories: bash Tags: , ,

GNOME Disk Utility

So far I’ve used gparted to get info about partitions. But today I found another tool that is shipped with Ubuntu called GNOME Disk Utility. It is also good for getting info but it can do some extra stuff too: create images, mount/unmount partitions, etc.

You can launch it with the “gnome-disks” command in the terminal. Or, just type “Disks” in the unity dash.


Categories: ubuntu Tags: , , , , ,

Recover images from flash cards

March 20, 2011 2 comments

The article “Recovering deleted images from flash cards” seems to address an interesting topic. I haven’t tried it yet but it might come in handy in the future…

In short: how to recover deleted files from a FAT file system.

Categories: Uncategorized Tags: , , , , ,

Wallpaper changer

January 10, 2011 Leave a comment


You have a bunch of images that you would like to see as your desktop wallpapers. You are looking for an application that could rotate these images periodically.


Try Wally. Just specify the directory where the images are located, set the time interval, and go. Wally runs on Windows, Linux, and Mac OSX.

sudo apt-get install wally

Wally knows a lot more; for a more detailed description check out this post.

Related Work

About a year ago, I used another application for this task called wallpaper-tray. However, this package is gone from Synaptic, it seems it has been replaced by wally.

Update (20110509) [Unity patch]

Wally exists in the system tray. However, Ubuntu 11.04 introduced Unity that comes with a new top panel and applications are not allowed to be there by default. You need to enable explications explicitly. If you want to continue using wally, here is what to do:

First, get your current settings for systray-whitelist:

gsettings get com.canonical.Unity.Panel systray-whitelist

Then, add your application to the above list with this command:

gsettings set com.canonical.Unity.Panel systray-whitelist "[ your_previous_list_here, 'wally']"

This tip is from Antonio, the author of wally.

If you want to download cool wallpapers, you may want to check out my Wallpaper Downloader and Rotator for Gnome. It can be used as a downloader and you can pass the rotating job to wally.

Categories: ubuntu, windows Tags: , , , ,