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

# Bulk Actions

You can apply bulk changes to the labels and frames in a Project directly from the **Explore** tab. In each case you select the items you want to change, open the **Actions** menu, and choose an action. The label operations **Change class**, **Edit attributes**, and **Delete labels**, and **Bulk classify** are grouped under **Edit labels** in that menu. Every bulk action applies to the items you select, or to the entire filtered set when you choose **Select all**.

<Tip>With items selected, press **A** to open the Actions menu. The menu is searchable, and each action shows its own keyboard shortcut inline that you can use while the menu is open.</Tip>

## Change Object Class

Change the object class assigned to selected objects. In the Actions menu, under **Edit labels**, this action appears as **Change class**.

<Note>You can only change an object to another class of the same object type. For example, bounding box to bounding box, or bitmask to bitmask.</Note>

<Warning>Changing an object's class removes all attributes on the selected object classes.</Warning>

**To change object classes:**

1. Log in to the Encord platform.

2. Go to **Projects** > **\[select a Project]** > **Explore**.

3. Switch to the **Labels** view and filter to the objects you want.

4. Select the objects you want to update, or click **Select all** to include the entire filtered set.

5. Click **Actions** in the selection toolbar, or press **A**.
   The Actions menu appears, with the label operations grouped under **Edit labels**.

6. Select **Change class**.
   The *Edit Object Class* dialog appears.

7. Under **Classes to change**, select the object classes you want to change.

8. Under **Change to**, select the class you want to change them to.

9. Click **Initiate Bulk Edit Object Class**.
   Encord runs the change as a bulk job across your selection.

## Edit Object Attributes

Update the attribute answers on selected objects of one class. In the Actions menu, under **Edit labels**, this action appears as **Edit attributes**.

<Info>Attributes you leave alone keep their current answers. Setting a checklist replaces the whole answer. The options you tick become the answer, and any you leave unticked are removed.</Info>

**To edit object attributes:**

1. Log in to the Encord platform.

2. Go to **Projects** > **\[select a Project]** > **Explore**.

3. Switch to the **Labels** view and filter to the objects you want.

4. Select the objects you want to update, or click **Select all** to include the entire filtered set.

5. Click **Actions** in the selection toolbar, or press **A**.
   The Actions menu appears, with the label operations grouped under **Edit labels**.

6. Select **Edit attributes**.
   The *Edit Object Attributes* dialog appears.

7. Select the object class whose attributes you want to edit.

8. Enter the new attribute answers (text, number, radio, or checklist).

9. Click **Initiate Bulk Edit Object Attributes**.
   Encord applies the answers to matching objects of the selected class across your selection.

## Bulk Classify

Apply a Classification, and its attribute answers, to selected images or frames. In the Actions menu, under **Edit labels**, this action appears as **Bulk classify**. Bulk classify runs as an asynchronous job, and you are notified when it completes.

<Note>The Classification you apply must already exist in an Ontology included in your Project. You can create an Ontology that includes Classifications from the [Encord platform](/platform-documentation/Annotate/annotate-ontologies/annotate-ontologies) or [using the Encord SDK](/sdk-documentation/ontologies-sdk/ontologies).</Note>

**To bulk classify images or frames:**

1. Log in to the Encord platform.

2. Go to **Projects** > **\[select a Project]** > **Explore**.

3. Switch to the images/frames view and filter to the items you want. Depending on your Project's media, this tab is labeled **Images**, **Frames**, or **Images & Frames**.

4. Select the items you want to classify, or click **Select all** to include the entire filtered set.

5. Click **Actions** in the selection toolbar, or press **A**.
   The Actions menu appears, with the operations grouped under **Edit labels**.

6. Select **Bulk classify**.
   The *Bulk Classify* dialog appears.

7. Select a Classification from the dropdown.

8. Set the Classification's attribute answers in the tree below the dropdown.

9. OPTIONAL: Turn on **Override existing classification** to replace any existing Classification of the same type on the selected items, then confirm the override when prompted.

   <Warning>Overriding deletes and replaces the existing Classification on the selected items and cannot be reverted.</Warning>

10. Click **Initiate Bulk Classify Job**.
    Encord runs the classification as a bulk job. You are notified when it completes.

## Delete Labels

Permanently delete all labels on the selected items. In the Actions menu, under **Edit labels**, this action appears as **Delete labels**.

<Warning>Deleting labels **permanently deletes** all labels on the selected items and **CANNOT BE UNDONE**.</Warning>

<Tip>We recommend saving a version of your labels before you delete them. See [Save Label Version](/platform-documentation/Annotate/annotate-projects/annotate-manage-annotation-projects#save-label-version).</Tip>

**To delete labels:**

1. Log in to the Encord platform.

2. Go to **Projects** > **\[select a Project]** > **Explore**.

3. Switch to the **Labels** view and filter to the labels you want.

4. Select the labels you want to delete, or click **Select all** to include the entire filtered set.

5. Click **Actions** in the selection toolbar, or press **A**.
   The Actions menu appears, with the label operations grouped under **Edit labels**.

6. Select **Delete labels**.
   The *Bulk Delete all Labels* dialog appears.

7. Review the warning. If you want a backup, save a label version before proceeding.

8. Click **Delete ... labels forever** (the button shows the number of labels selected).

9. When prompted to confirm, click **Proceed to Delete**.
   Encord deletes the labels as a bulk job.