> ## Documentation Index
> Fetch the complete documentation index at: https://mintlify.com/obsidianmd/obsidian-help/llms.txt
> Use this file to discover all available pages before exploring further.

# Create a base

> Learn how to create a base file, embed a base in a Markdown note, and configure filters to control which notes appear in your views.

A base lets you create database-like views of your notes. You can save a base as a standalone `.base` file, or embed one directly inside a Markdown note.

## Create a new base

<Tabs>
  <Tab title="Command palette">
    1. Open the Command palette (`Ctrl+P` / `Cmd+P`).
    2. Select one of:
       * **Bases: Create new base** — creates a `.base` file in the same folder as the active file.
       * **Bases: Insert new base** — creates a base and embeds it in the current note as a code block.
  </Tab>

  <Tab title="File explorer">
    1. Right-click the folder where you want the base.
    2. Select **New base**.
  </Tab>

  <Tab title="Ribbon">
    In the left ribbon, select **Create new base** to create a base in the same folder as the active file.
  </Tab>
</Tabs>

## Embed a base

### Embed a base file in another file

You can embed an existing `.base` file into any Markdown note or canvas using the standard embed syntax:

```md theme={null}
![[MyBase.base]]
```

To embed a base and show a specific view by default, append the view name after a `#`:

```md theme={null}
![[MyBase.base#Reading list]]
```

### Embed a base as a code block

You can also write a base configuration directly inside a note using a `base` code block and the [Bases syntax](/bases/syntax):

````md theme={null}
```base
filters:
  and:
    - file.hasTag("example")
views:
  - type: table
    name: Table
```
````

When you open the note, Obsidian renders the code block as a live base view.

## Configure the source

By default, a base includes every file in your vault. Use filters to narrow the source down to the files you care about.

### Filter by tag

```yaml theme={null}
filters:
  and:
    - file.hasTag("books")
```

### Filter by folder

```yaml theme={null}
filters:
  and:
    - file.inFolder("Projects")
```

### Combine conditions

```yaml theme={null}
filters:
  and:
    - file.hasTag("books")
    - file.inFolder("Reading")
```

```yaml theme={null}
filters:
  or:
    - file.hasTag("books")
    - file.hasTag("articles")
```

You can build complex filters using `and`, `or`, and `not` operators. Filters are also available through the visual **Filter** menu in the base toolbar — you don't need to edit the file directly.

## Add and remove properties

Properties (columns in table view, fields in other views) correspond to the frontmatter properties in your notes.

To manage which properties are shown:

1. Click **Properties** in the base toolbar.
2. Toggle properties on or off, or drag them to reorder.
3. Click **Add formula** to create a computed column.

You can also rename a property's display name without changing the underlying frontmatter key — the display name is stored in the base configuration.