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Merge content type changes with Merge app

Table of contents

What is the Merge app?

Merge app allows you to move your content type changes from one environment to another. With the Merge app, you can review the changes in your non-production environment and select which ones to merge to the target environment that you select.

What is merged with the Merge app?

The following kinds of content type changes are included in the merge:

  • Adding, editing, changing and/or deleting content types.
  • Adding, editing and/or deleting fields.
  • Adding, editing and/or removing field settings and validations.
  • Default value edits.
  • Change of field appearance and help text.


  • A minimum of two environments in the same space, with the Merge app installed in each environment to be used for comparing changes.

  • For a user to be able to perform a merge, the following permissions need to be activated in this user's space role:

    • Allow rule to read all entries in the target environment.

      If access to any of the entries in the target environment is denied, the Merge app will not be able to validate whether a merge can be executed successfully.
    • Permission to create, edit and delete content types in the target environment.

Process of merging

Merging your content type changes from one environment to another is accomplished by completing the following stages:

I. Selecting the environments — In this stage, you select the source environment which contains the changes and the target environment to which you would like to merge your changes.

II. Selecting the content types — In this stage, you compare your content types and select the changes that you would like to merge to the target environment.

The changes are highlighted to reflect the change type as follows:
- Blue color — Highlights a content type or a field that is updated in a merge.
- Green color — Highlights a content type or a field that is added in a merge.
- Red color — Highlights a content type or a field that is deleted in a merge.

III. Resolving conflicts — In this stage, you can review potential conflicts and read the recommendations to resolve them. The content types are displayed under the following groups:

  • Content types with required actions — It is required to fulfill the instructions under this section to merge the content type to the target environment.

    Alternatively to fulfilling the instructions, you may remove the content type from your merge.
  • Content types with recommended actions — It is recommended to fulfill the instructions under this section, but the content type will be merged in any case.

  • Ready to merge — The content type has no conflicts. No action required.

Install Merge app

To install the Merge app:

  1. Log in to Contentful web app.
  2. In the top pane, click Apps and select Manage apps.

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  1. Go to the Merge app and click on it.

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  1. In the “App details” card, click Install.

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  1. Click the Environments field and select the checkboxes against the environment(s) in which you would like the Merge app to be installed. Then, click Authorize access.

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It is required to install the Merge app in an environment to use it as a source or target environment for content type changes.
  1. In the app information page, click Install. The Merge app is installed.

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Whenever you clone an environment, the Merge app installed in it is also cloned.

Merge content type changes

To learn how to use Merge app with Contentful CLI, refer to Merge app CLI.

To merge your content types changes from one environment to another:

  1. Log in to Contentful web app.
  2. In the top pane, click Apps and select Merge. Merge app 601
  1. Select the environments for merging from the drop-down lists under the following fields:

    • Target environment — Select the target environment to merge your changes to.
    • Source environment — Select the environment in which the changes were made.
  2. After both source and target environments are selected, click Compare environments. Merge app 602

  3. Select the content type changes to be merged by clicking the relevant checkboxes.

Clicking Show details expands the details of a specific change, where you can view which fields were added, removed or edited.
  1. Click Review changes to proceed to the next step. Merge app 603

  2. If there are any conflicts, review and resolve them as instructed. Then, click Reload page to update the page.

It is mandatory to resolve conflicts under the “Content types with required actions” to be able to proceed with your merge. Alternatively, you can remove the content types from the merge.
  1. Optional: Click Export migration script to generate and download the migration file.
You can use the migration file to apply your content type changes in other environments or spaces or to keep a record of the migration.

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  1. Click Merge content types.

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  1. Click Merge content types to confirm your changes. The merging process starts.
Important! Don’t close the browser tab until the merge is finished.

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  1. Optional: After your content type changes are merged to the target environment, look through the results of the merge in the MERGE RESULT screen.

Next steps

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