### **How to Change Your Jupyter Notebook Theme to Dark Mode | Customize Jupyter Notebook UI**

**Description:**
Tired of the default **white theme** in **Jupyter Notebook**? Want to switch to a **dark theme** for a better coding experience? In this tutorial, we’ll show you **how to change your Jupyter Notebook theme** to **Dark Mode** using **jupyter-themes**.

With a dark theme, you'll get **reduced eye strain**, an **aesthetic UI**, and a more comfortable environment for coding.

---

### **What You’ll Learn in This Video:**
How to **install jupyter-themes**
How to **switch Jupyter Notebook to dark mode**
How to **customize fonts, colors, and layout**
How to **reset Jupyter Notebook to the default theme**

---

### ** Step-by-Step Guide to Changing Jupyter Notebook Theme**

#### **1⃣ Open Jupyter Notebook**
Launch Jupyter Notebook by running:
```bash
jupyter notebook
```

---

#### **2⃣ Install jupyter-themes**
To change your Jupyter Notebook theme, install **jupyter-themes** using pip:
```bash
pip install jupyterthemes
```
This will install the package that allows you to customize Jupyter Notebook themes.

---

#### **3⃣ List Available Themes**
To see all available themes, run:
```bash
jt -l
```
This will display a list of themes such as:
```bash
Available themes:
chesterish
grade3
gruvboxd
gruvboxl
monokai
oceans16
onedork
solarizedd
solarizedl
```

---

#### **4⃣ Apply a Dark Theme**
Choose a dark theme (e.g., **monokai**, **onedork**, or **gruvboxd**) and apply it using:
```bash
jt -t monokai
```
**Restart Jupyter Notebook** to apply the changes.

---

#### **5⃣ Customize Fonts, Toolbar, and Cell Width**
You can **customize fonts, hide the toolbar, and adjust the layout**:

**Increase Font Size:**
```bash
jt -t monokai -fs 12
```
**Change Code Cell Width:**
```bash
jt -t monokai -cellw 90%
```
**Show Toolbar and Logo:**
```bash
jt -t monokai -T -N
```
**Enable or Disable Notebook Borders:**
```bash
jt -t monokai -altout -kl
```

---

#### **6⃣ Reset Jupyter Notebook to Default Theme**
If you want to **restore Jupyter Notebook** to its original theme, run:
```bash
jt -r
```
Restart Jupyter Notebook to apply changes.

---

### ** Fixing Common Issues**
** Theme Not Changing?**
Restart Jupyter Notebook after applying the new theme.
Run:
```bash
jupyter notebook stop
jupyter notebook
```

** Fonts Too Small or Big?**
Adjust font size:
```bash
jt -t monokai -fs 14
```

** Want to Try a Different Theme?**
Run `jt -l` again and select another theme.

---

### ** Useful Links:**
Jupyter Themes Documentation: [https://github.com/dunovank/jupyter-themes](https://github.com/dunovank/jupyter-themes)
Jupyter Notebook Guide: [https://jupyter.org/](https://jupyter.org/)

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**Hashtags:**
#JupyterNotebook #DarkMode #Python #Coding #DataScience #MachineLearning #DeveloperTips #JupyterThemes #Customization #LearnPython