> For the complete documentation index, see [llms.txt](https://help.felt.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.felt.com/layers/edit-features.md).
# Edit features
Draw new features in a layer, reshape them, and keep their values up to date on the web. Your edits are saved as you go.
To add, reshape, or delete a layer's features, or edit their values, click **Edit map** in the toolbar at the top right of the map, or **Contribute** if you have Contribute access. Felt saves your edits as you make them, and everyone viewing the map sees them.
## Add a feature to a layer
1. In edit mode, click **Add to map** (the pencil icon) in the toolbar, and select the layer in the menu. With Contribute access, the button reads **Add**. After your first add, the button repeats your most recent one, such as adding to the same layer; click the arrow next to it to open the menu.
2. Click the map to place a point, or click to place each vertex of a line or polygon. To finish a line or polygon, click **Finish drawing**.
3. In the feature editor, enter the attribute values.
4. Click **Done**, or press **Enter**. Felt adds the feature using the layer's style. To color features by an attribute, see [Categories](/styling/style-vector-layers.md#categories).
A feature can't be saved until its required fields are filled in.
To add many features in a row, click **Add in bulk** at the top of the feature editor. To place a point at exact coordinates, [search](/tools/search.md) for the coordinates, then click **Add…** in the result's popup and select the layer. To create a new empty layer for editing, see [Create layers](/layers/create-layers.md).
## Reshape or move a feature
1. In edit mode, double-click the feature on the map. Or click it once and click **Edit** (the pencil icon) in its popup.
2. Change the geometry:
* To move the whole feature, such as a misplaced point, drag it.
* To move a vertex, drag it.
* To add a vertex, hover over the middle of a line segment or polygon edge and drag the point that appears.
* To delete a vertex or enter its exact coordinates, click the vertex and click **Delete** or **Edit coordinates…**.
* To continue a line, click one of its end vertices and click **Extend**.
3. Click **Done**.
As you draw or drag a vertex, it snaps to the nearest vertex of a feature in any visible layer, so shapes line up with existing data. Snapping is on by default. To turn it off or back on, open the **Felt** menu and click **View** > **Snap to vertices**. See [Snap to vertices](/annotations/draw-on-the-map.md#snap-to-vertices).
Felt can't split a feature; draw the pieces as new features and delete the original. You also can't move or copy a feature from one layer to another.
## Edit attribute values
When you change a feature's name, status, or other values, its styling and labels update to match.
1. In edit mode, double-click the feature on the map.
2. In the feature editor, change the values.
3. Click **Done**.
In the [table](/tools/table.md), select the row, then click a cell, enter the new value, and press **Enter**. Editing a latitude or longitude column doesn't move the feature; reshape or move it on the map instead.
You can't box-select several features to edit, move, or delete together. To change an attribute on many features, ask [Felt AI](/felt-ai/ai-assistant.md). To keep only some features, filter the layer and save the result as a new layer. See [Filter layers](/layers/filter-layers.md#save-the-filtered-features-as-a-new-layer).
## Add, rename, or delete attributes
Changing a layer's attributes (columns) needs Edit access to the map. You can add, rename, reorder, or delete them without uploading the data again.
1. In edit mode, click the layer's **···** menu in the legend and click **Edit attributes**.
2. Make your changes:
* To add an attribute, click **Add attribute** and select its type.
* To rename an attribute, click its name in the list and enter a new one.
* To reorder attributes, drag them in the list.
* To delete an attribute, hover over it and click **Delete**.
3. Click **Update layer**.
You can't change a saved attribute's type; add a new attribute of the type you need. Use the dialog's other settings to configure the form people fill in. See [Forms](/layers/forms.md).
{% hint style="danger" %}
Deleting an attribute deletes its values from every feature. Felt lists any styling, filters, or components that use it before you confirm.
{% endhint %}
## Delete a feature
Deleting a feature removes it and its values from the layer. In edit mode, click the feature on the map and press **Delete**. Or, in the table, right-click its row and click **Delete**.
To undo an edit or a deletion, press **Cmd+Z** (Mac) or **Ctrl+Z** (Windows). Undo covers only your own changes. See [Save and undo changes](/maps/undo-changes.md).
## Layers you can't edit
You can edit vector layers you create or add to a map. If you can't edit a layer or feature, check whether:
* You're not in edit mode, or you have View access to the map.
* It's a raster layer, a layer streamed from a tile service, or a layer Felt is still processing.
* It's a synced Felt Server layer and you have View access to the Felt Server. Turn off sync to edit a copy on your map. See [Felt Servers](/upload-anything/felt-servers.md).
* Someone else is editing the feature. Each person's edits are outlined in their assigned color. You can edit the feature once they're done.
## Edits and the original data
Edits change the layer on this map, not the uploaded file, the source, or other maps with the same data. Edits to a synced Felt Server layer appear on every map that uses it.
Editing a layer from a URL or a data source turns off its **Live** refresh, because a refresh would overwrite your edits. Felt asks you to confirm: click **Edit anyway**.
{% hint style="warning" %}
Felt doesn't write edits back to the source. Turning **Live** back on, refreshing, or uploading a new version replaces the layer's data and discards your edits. See [Refresh data](/upload-anything/refresh-data.md). To update a source with your edits, export the edited layer with the [REST API](/developers/rest-api.md) and write it to the source with your own script.
{% endhint %}
---
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