How to reset jupyter notebook theme to default?

Question

I'm using the jupyter notebook installed with Anaconda (I'm on Mac). Few days ago, I wanted to change the theme to have a dark background, and I followed the instructions here. Namely, I've downloaded the theme custom.css and placed it in ~/.jupyter/custom/. It worked very well.

I liked the theme, but I would like to go back to the default one (this one does not show the main toolbar, among other things). I tried to remove the custom.css from its folder, I reset my terminal, but nothing changes! I'm guessing that jupyter keeps a copy of the themes somewhere that I should delete, but I can't find it.

I have also tried uninstalling jupyter and reinstalling, following the commands:

conda update conda
conda uninstall ipython
conda install jupyter

Again, no change. I'm stuck with my black background theme with no toolbar.

Solution 1

My previous suggestion of deleting the custom/ directory doesn't do the trick. jupyter caches the custom.css file in other directories that are tricky to clear all together. If it doesn't find a folder custom with .css file inside it it looks in other locations to pick up a .css file. Also, I'm not sure if every location is actually deleted when you uninstall jupyter.

The easiest solution is to delete the old custom.css and replace it with a new empty custom.css file. jupyter picks that up and goes back to its default look.

Solution 2

An easier way might be to do:

pip install jupyterthemes

Now you can choose from the following given themes and activate it like this

# list available themes
# onedork | grade3 | oceans16 | chesterish | monokai | solarizedl | solarizedd
jt -t <THEME_NAME>

In order to reset your theme to the default theme just use

jt -r

For all information and more, visit github.com/dunovank/jupyter-themes

Hope this helps!

Solution 3

I am hoping that you used pip install jupyterthemes to get the custom themes.

The following are the steps that take you from installation of new themes to the resetting of the same to default.

pip install jupyterthemes 

jt -l (List of all themes)

jt -t <THEME NAME> (to implement a theme)

jt -r (to reset the notebook to default)

Hope this helps.

Solution 4

In order to reset your theme type in cmd

jt -r

delete the directories returned by console. Now restart the notebook server.

Solution 5

Close any instances of jupyter notebook. Open Anaconda prompt. Run "pip install jupyterthemes" This should show you the themes installed/ cached by jupyter notebook.

Now run "jt -r" to reset the theme to default as shown below.

Open and test jupyter notebook. Theme should be gone now. Cheers!!!

View more solutions

Comments

[TheTank]

I get command not found: jt when i use jt -r. How do I reset to default theme?

[Gonzalo Garcia]

@TheTank you should install jupyterthemes before

[P i]

@TheTank also if you had a virtual environment activated when you pip-installed it, make sure you are in the same virtual environment when you UN-install it!

[theProcrastinator]

I couldn't pip install jupyterthemes, instead conda install -c conda-forge jupyterthemes works :)

[maciejwww]

It works probably but it isn't a proper way to solve the problem because the reason is a bug - the -fs flag should only change font size as you tried to.